{"id":6288,"date":"2025-11-28T14:41:38","date_gmt":"2025-11-28T06:41:38","guid":{"rendered":"https:\/\/issrsensor.com\/?p=6288"},"modified":"2026-01-29T15:59:32","modified_gmt":"2026-01-29T07:59:32","slug":"types-of-ultrasonic-sensors-and-ultrasonic-transducers-explained","status":"publish","type":"post","link":"https:\/\/issrsensor.com\/it\/types-of-ultrasonic-sensors-and-ultrasonic-transducers-explained\/","title":{"rendered":"Tipi di sensori a ultrasuoni e trasduttori a ultrasuoni spiegati"},"content":{"rendered":"<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-4e61126\" id=\"i-introduction\" data-block-id=\"4e61126\"><style>.stk-4e61126 .stk-block-heading__text{color:var(--theme-palette-color-4, #1c1c1c) !important;}<\/style><h2 class=\"stk-block-heading__text has-text-color\">I. Introduction<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9820f37\" data-block-id=\"9820f37\"><style>.stk-9820f37 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\"><a href=\"https:\/\/issrsensor.com\/ultrasonic-sensors\/\" target=\"_blank\">Sensori a ultrasuoni<\/a> are widely used in industrial automation for distance measurement, level detection, material recognition, and obstacle avoidance. Although they all rely on the same fundamental principle\u2014using high frequency sound waves to detect objects\u2014their designs vary greatly depending on application requirements.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-af1ba92\" data-block-id=\"af1ba92\"><style>.stk-af1ba92 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">From a selection point of view, the challenge is not simply:<br><br>\u201cWhich ultrasonic sensor is the best?\u201d<br><br>but rather:<br><br>\u201cWhich ultrasonic sensor is the best match for this specific application?\u201d<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">\nDifferent applications demand different combinations of:<br>\n<ul><li>Operating frequency (short range \/ high frequency vs. long range \/ low frequency)<\/li>\n<li>Output type (switching, analog, digital, or configurable multi output)<\/li>\n<li>Detection mode (diffuse reflection, through beam, or material sensing)<\/li>\n<li>Application scenario (level measurement, proximity, web guiding, AGV obstacle avoidance, material classification, etc.)<\/li><\/ul>\n<\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">This document introduces a practical, four dimensional framework for selecting ultrasonic sensors:<br>\n<ul><li>Dimension 1: Operating Frequency<\/li>\n<li>Dimension 2: Output Signal Type<\/li>\n<li>Dimension 3: Detection Mode<\/li>\n<li>Dimension 4: Application Scenario<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f7e69d4\" data-block-id=\"f7e69d4\"><style>.stk-f7e69d4 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Within this framework, we will also refer to typical ultrasonic transducer types and industrial sensor designs, highlighting how choices at the transducer level (frequency, beam characteristics) translate into system level performance and trade offs.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-3446d6d\" id=\"ii-dimension-1-by-operating-frequency\" data-block-id=\"3446d6d\"><style>.stk-3446d6d .stk-block-heading__text{color:var(--theme-palette-color-4, #1c1c1c) !important;}<\/style><h2 class=\"stk-block-heading__text has-text-color\">II. Dimension 1: By Operating Frequency<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-d357ad1\" data-block-id=\"d357ad1\"><style>.stk-d357ad1 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">When comparing different types of ultrasonic sensor, operating frequency is one of the core parameters that defines performance. <br>From the standpoint of <a href=\"https:\/\/issrsensor.com\/ultrasonic-transducers\/\" target=\"_blank\">Ultrasonic Transducer<\/a> types, most airborne industrial sensors use either:<br>a low  to mid frequency band (typically around 40\u2013120 kHz), or a high frequency band (typically around 180\u2013400 kHz, with 200 kHz, 300 kHz, and 400 kHz as key operating points).<br>These bands behave very differently in terms of range, resolution, beam width, and response time.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ff1e334\" id=\"1-standard-low-frequency-40-k-hz-120-k-hz\" data-block-id=\"ff1e334\"><style>.stk-ff1e334 .stk-block-heading__text{color:var(--theme-palette-color-4, #1c1c1c) !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">1. Standard Low Frequency: 40 kHz \u2013 120 kHz<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-0c35a29\" id=\"1-1-physical-characteristics\" data-block-id=\"0c35a29\"><style>.stk-0c35a29 .stk-block-heading__text{color:var(--theme-palette-color-4, #1c1c1c) !important;}<\/style><h4 class=\"stk-block-heading__text has-text-color\">1.1 Physical characteristics<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Low frequency ultrasonic transducers\u2014most famously at 40 kHz\u2014are widely used in industrial distance and level sensing. Their key physical characteristics are:<br>\n<ul><li><strong>Longer wavelength<\/strong><br>\nA 40 kHz wave in air has a relatively long wavelength, giving the sound field strong diffraction and a comparatively wide beam.<\/li>\n<li><strong>Lower attenuation in air<\/strong><br>\nAcoustic energy at roughly 40\u201380 kHz is absorbed less by air than higher frequencies, which supports longer measuring distances.<\/li>\n<li><strong>Good penetration<\/strong><br>\nThe wave can \u201csee through\u201d dust, mist, and light smoke better than optical systems, and is less disturbed by small turbulence.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-71f8027\" data-block-id=\"71f8027\"><style>.stk-71f8027 .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-5932\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Dust-dampness-and-smoky-environments-do-not-affect-work.webp\" width=\"565\" height=\"318\" alt=\"L&#039;umidit\u00e0 della polvere e gli ambienti fumosi non influiscono sul lavoro.\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Dust-dampness-and-smoky-environments-do-not-affect-work.webp 565w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Dust-dampness-and-smoky-environments-do-not-affect-work-300x169.webp 300w\" sizes=\"auto, (max-width: 565px) 100vw, 565px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-c2d4844\" data-block-id=\"c2d4844\"><style>.stk-c2d4844 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">From the perspective of ultrasonic sensor transducer design, this band is ideal for general purpose, long range and robust applications where absolute range and stability are more important than extreme precision.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-aee896c\" id=\"1-2-typical-transducer-implementations\" data-block-id=\"aee896c\"><style>.stk-aee896c .stk-block-heading__text{color:var(--theme-palette-color-4, #1c1c1c) !important;}<\/style><h4 class=\"stk-block-heading__text has-text-color\">1.2 Typical transducer implementations<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Common ultrasonic transducer types in this band include:<br>\n<ul style=\"line-height: 1.8rem;\"><li><strong>Open type 40 kHz transducers<\/strong><br>\n<ul><li>Used in many classic distance sensors and presence detectors.<\/li>\n<li>Suitable for clean or mildly dusty environments.<\/li><\/ul><\/li>\n<li><strong>Sealed \/ encapsulated 40\u2013120 kHz transducers<\/strong><br>\n<ul><li>Used where spray, oil, or contamination is expected.<\/li>\n<li>Common in tank environments, food &#038; beverage, or outdoor use.<\/li>\n<li>In many industrial level sensors, frequencies such as 65 kHz, 75 kHz, or 112 kHz are used to reach measuring distances up to several meters.<\/li><\/ul><\/li><\/ul>\n<\/div><br>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-b2047fc\" data-block-id=\"b2047fc\"><style>.stk-b2047fc .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6243\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-in-the-food-presence-detection-industry.webp\" width=\"750\" height=\"422\" alt=\"Application in the food presence detection industry\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-in-the-food-presence-detection-industry.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-in-the-food-presence-detection-industry-300x169.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-in-the-food-presence-detection-industry-18x10.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0d012bc\" data-block-id=\"0d012bc\"><style>.stk-0d012bc .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">These acoustic cores are typically built into:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-8aa3f7f\" data-block-id=\"8aa3f7f\"><style>.stk-8aa3f7f .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6242\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-in-detecting-the-level-of-corrosive-liquids-in-tanks.webp\" width=\"750\" height=\"471\" alt=\"Applicazione nel rilevamento del livello di liquidi corrosivi nei serbatoi\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-in-detecting-the-level-of-corrosive-liquids-in-tanks.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-in-detecting-the-level-of-corrosive-liquids-in-tanks-300x188.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-in-detecting-the-level-of-corrosive-liquids-in-tanks-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<ul style=\"line-hight: 1.8rem;\"><li>3\u20136 m distance and level sensors for larger tanks, silos, bins, and long conveyor sections, often using 65\u2013112 kHz transducers (e.g. 3 m at 112 kHz, 4 m at 75 kHz, 6 m at 65 kHz).<\/li>\n<li>Long range obstacle and presence detection modules, including AGV obstacle avoidance sensors around 58 kHz, where robust detection over several meters is required.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-57ad65d\" data-block-id=\"57ad65d\"><style>.stk-57ad65d .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">In some designs, one element alternates between transmit and receive roles (a transceiver); in others, dedicated transmit and receive elements are used to improve signal to noise ratio. The transmitting element is sometimes specifically called the ultrasonic transducer transmitter, especially in through beam systems.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-8d4e961\" id=\"1-3-advantages\" data-block-id=\"8d4e961\"><style>.stk-8d4e961 .stk-block-heading__text{color:var(--theme-palette-color-4, #1c1c1c) !important;}<\/style><h4 class=\"stk-block-heading__text has-text-color\">1.3 Advantages<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Standard low frequency sensors offer several practical benefits:<br>\n<ul><li><strong>Long measuring range<\/strong><br>\nRanges up to 6 m and beyond are achievable with appropriate targets and transducer design.<\/li>\n<li><strong>Wide coverage<\/strong><br>\nThe wider beam is useful when target position is not fixed (e.g. bulk solids or irregular objects).<\/li>\n<li><strong>Tolerance to misalignment<\/strong><br>\nInstallation is comparatively forgiving; small angular errors are often acceptable.<\/li>\n<li><strong>Cost effective<\/strong><br>\nMature manufacturing and high volumes help control overall cost, similar in spirit to how designers compare ultrasound probe cost or ultrasound probe price when choosing between <a href=\"https:\/\/drsono.com\/blogs\/news\/types-of-ultrasound-probes\/?srsltid=AfmBOorDyJ7HCwx9uJCuJq8LNyIXZYdRCBfguQM1ITwQ9zaJiuE34HTF\" target=\"_blank\">different medical ultrasound probe<\/a>.<\/li><\/ul>\nThese features make low  to mid frequency devices (around 40\u2013120 kHz) the default choice for many medium  to long range level measurements, presence detection, and basic obstacle detection tasks.\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-d663c29\" id=\"1-4-limitations\" data-block-id=\"d663c29\"><style>.stk-d663c29 .stk-block-heading__text{color:var(--theme-palette-color-4, #1c1c1c) !important;}<\/style><h4 class=\"stk-block-heading__text has-text-color\">1.4 Limitations<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">The same physical properties also impose constraints:<br>\n<ul><li><strong>Moderate resolution<\/strong><br>\nThe longer wavelength limits how finely distance can be resolved, especially at very short range.<\/li>\n<li><strong>Larger blind zone<\/strong><br>\nRing down after excitation can produce a relatively large minimum measuring distance.<\/li>\n<li><strong>Not ideal for very thin or closely spaced targets<\/strong><br>\nDistinguishing thin sheets, small air gaps, or minute positional changes is challenging with low frequency waves.<\/li><\/ul>\n<\/div><br>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-d933519\" data-block-id=\"d933519\"><style>.stk-d933519 .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6247\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Comparison-of-high-frequency-and-low-frequency-sound-waves-for-detecting-thin-objects.webp\" width=\"750\" height=\"451\" alt=\"Comparison of high-frequency and low-frequency sound waves for detecting thin objects\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Comparison-of-high-frequency-and-low-frequency-sound-waves-for-detecting-thin-objects.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Comparison-of-high-frequency-and-low-frequency-sound-waves-for-detecting-thin-objects-300x180.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Comparison-of-high-frequency-and-low-frequency-sound-waves-for-detecting-thin-objects-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-d9dabda\" data-block-id=\"d9dabda\"><style>.stk-d9dabda .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Whenever specifications mention the need to detect thin films, individual sheets, very small displacement changes, or short range millimetre accuracy, it is usually a sign that higher frequency ultrasonic probes should be considered.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-cb1bf2d\" id=\"2-precision-high-frequency-160-k-hz-400-k-hz\" data-block-id=\"cb1bf2d\"><style>.stk-cb1bf2d .stk-block-heading__text{color:var(--theme-palette-color-4, #1c1c1c) !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">2. Precision High Frequency: 160 kHz \u2013 400 kHz<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-8d64537\" data-block-id=\"8d64537\"><style>.stk-8d64537 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">High frequency ultrasonic transducers in the roughly 160\u2013400 kHz range form a distinct family of ultrasonic transducer types. They are optimized for short range, high precision tasks rather than long range coverage.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-5dd302f\" data-block-id=\"5dd302f\"><style>.stk-5dd302f .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Typical operating points in this band include 160 kHz, 200 kHz, 300 kHz, and 400 kHz, which are used in short range level sensors, proximity switches, edge correction detection web guiding, and material sensing devices.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-57f5f71\" id=\"2-1-physical-characteristics\" data-block-id=\"57f5f71\"><style>.stk-57f5f71 .stk-block-heading__text{color:var(--theme-palette-color-4, #1c1c1c) !important;}<\/style><h4 class=\"stk-block-heading__text has-text-color\">2.1 Physical characteristics<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Compared with 40 kHz, high frequency devices (around 160\u2013400 kHz) exhibit:<br>\n<ul><li><strong>Much shorter wavelength<\/strong><br>\nEnables finer spatial resolution and more precise time of flight measurement.<\/li>\n<li><strong>Narrower beam angle<\/strong><br>\nThe sound field is more tightly focused, improving directionality and reducing interference from off axis objects.<\/li>\n<li><strong>Faster response<\/strong><br>\nShorter acoustic cycles and reduced ringing make high update rates possible.<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-708876d\" data-block-id=\"708876d\"><style>.stk-708876d .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">These are the same physical reasons why, in medical imaging, a <a href=\"https:\/\/elzhen.com\/blog\/what-is-a-linear-transducer\/?srsltid=AfmBOoqOa6COIwvCDX2SX_IhIcppbzjLCjzzaHqN5SfLk58BS1bfp7mR\" target=\"_blank\">linear ultrasound probe<\/a> is chosen for high resolution imaging of shallow structures, while lower frequencies are used for deeper penetration. Industrial sensing uses simpler single element heads instead of complex imaging arrays, but the frequency trade offs are very similar.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-3dbfc4f\" id=\"2-2-why-200-k-hz\" data-block-id=\"3dbfc4f\"><h4 class=\"stk-block-heading__text\">2.2 Why 200 kHz?<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ec1c115\" data-block-id=\"ec1c115\"><style>.stk-ec1c115 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Around 200 kHz (including nearby values such as 160 kHz), high precision distance and presence sensing in air becomes very attractive, while attenuation and robustness are still manageable. In this band, both rectangular ultrasonic web edge guiding transducers around 160 kHz and round 200 kHz ultrasonic edge guiding transducers are commonly used in web guiding and edge correction sensors.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem\">Reasons to choose 200 kHz class transducers:<br>\n\n<ul><li><strong>Millimetre level accuracy at short range<\/strong><br>\nFor distances below about 1 m, 160\u2013200 kHz offers significantly better resolution than 40 kHz, making it suitable for precision distance measurement and proximity switching. In web guiding applications, a 160 kHz rectangular edge detection ultrasonic transducer or a 200 kHz round edge detection ultrasonic transducer can resolve small lateral movements of the web edge or strip, supporting precise guiding control.<\/li>\n<li><strong>High update rate<\/strong><br>\nFast acoustic cycles allow a high measurement repetition rate, important in dynamic processes or moving machinery. This is especially valuable in edge guiding systems, where the ultrasonic web guiding sensor must update the edge position quickly to keep the web centred.<\/li>\n<li><strong>Balanced trade off<\/strong><br>\nCompared with even higher frequencies such as 300\u2013400 kHz, 200 kHz experiences lower air attenuation, which can slightly extend usable distance or improve margin in less than ideal conditions. For edge detection and web guiding, this balance helps both the 160 kHz rectangular transducer and the 200 kHz round transducer maintain strong, stable echoes even in the presence of air currents, dust, or vapours near the web.<\/li>\n<\/ul><\/div>\n\n\n\n<div style=\"line-height: 1.8rem\">Typical industrial applications include:<br>\n\n<ul><li><strong>Short range level and distance sensors<\/strong>\nFor example: 0.35 m sensors using around 200 kHz transducers,0.5 m sensors using 160\u2013200 kHz transducers, and 1 m sensors using 200 kHz transducers in compact tanks or process equipment.<\/li>\n<li><strong>Short range proximity switches (selected variants)<\/strong><br>\nFor example, 0.25 m ultrasonic proximity switches can use 200 kHz transducers where exact approach distance matters and metal, plastic, or other materials must be detected consistently.<\/li>\n<li><strong>High precision position measurements<\/strong><br>\nIn positioning devices or inspection setups where millimetre changes are significant.<\/li>\n<li><strong>Web edge detection and guiding<\/strong><br>\nIn web guiding and edge correction systems for films, paper, foil, non wovens, or battery electrodes, <a href=\"https:\/\/issrsensor.com\/products\/120khz-rectangular-edge-detection-and-correction-ultrasonic-transducer\/\" target=\"_blank\">160 kHz rectangular<\/a> and 200 kHz round ultrasonic edge detection transducers are used as the sensing heads in ultrasonic web guiding sensors. The rectangular 160 kHz design can help shape the sound field for line like edge coverage, while the 200 kHz round design provides a compact, symmetric beam for standard edge guiding installations.<\/li>\n<li><strong>Wind speed and direction instruments<\/strong><br>\nMany ultrasonic anemometers adopt around 200 kHz <a href=\"https:\/\/issrsensor.com\/products\/ultrasonic-wind-speed-direction-detection-transducer\/\" target=\"_blank\"> Ultrasonic Transducer Elements<\/a> to measure time of flight along multiple paths. In such cases, each acoustic path is formed by a pair of carefully matched elements, conceptually similar to an ultrasonic flow meter transducer pair used for gas or liquid flow.<\/li><\/ul>\n<\/div><br>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-13d79e0\" data-block-id=\"13d79e0\"><style>.stk-13d79e0 {margin-bottom:0px !important;}.stk-13d79e0 .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6245\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-scenarios-of-200kHz-ultrasonic-transducer-anemometer.webp\" width=\"750\" height=\"500\" alt=\"Scenari di applicazione dell&#039;anemometro con trasduttore a ultrasuoni a 200 kHz\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-scenarios-of-200kHz-ultrasonic-transducer-anemometer.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-scenarios-of-200kHz-ultrasonic-transducer-anemometer-300x200.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-scenarios-of-200kHz-ultrasonic-transducer-anemometer-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b609487\" data-block-id=\"b609487\"><style>.stk-b609487 .stk-block-text__text{font-size:0.9rem !important;}@media screen and (max-width:999px){.stk-b609487 .stk-block-text__text{font-size:0.9rem !important;}}<\/style><p class=\"stk-block-text__text has-text-align-right\">Image source\uff1a<a href=\"https:\/\/ciao.imaa.cnr.it\/observatory\/instruments\/ancillary\/ultrasonic-anemometer-metek-usonic-3-class-a\/\" target=\"_blank\">CIAO<\/a><\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-b94fc99\" id=\"2-3-why-300-k-hz\" data-block-id=\"b94fc99\"><h4 class=\"stk-block-heading__text\">2.3 Why 300 kHz?<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b222426\" data-block-id=\"b222426\"><style>.stk-b222426 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">At around 300 kHz, the focus shifts from \u201cgeneral precision\u201d to extreme sensitivity to small thickness or gap changes and material properties.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Reasons to choose 300 kHz:<br>\n<ul><li><strong>Detection of very thin materials<\/strong><br>\nThe shorter wavelength allows the acoustic system to resolve small changes in sheet thickness or the presence of a tiny air gap.<\/li>\n<li><strong>High sensitivity to acoustic impedance changes<\/strong><br>\nSmall differences in material or layering cause measurable changes in the transmitted or reflected signal.<\/li>\n<li><strong>Very narrow beam and localized interaction<\/strong><br>\nThe sound field interacts with a tightly defined spot, which is ideal for distinguishing individual layers or edges.<\/li>\n<\/div><br>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-5cc001d\" data-block-id=\"5cc001d\"><style>.stk-5cc001d {margin-bottom:0px !important;}.stk-5cc001d .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6241\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/A-dual-sensor-detection-sensor-using-a-300kHz-ultrasonic-transducer-is-used-to-detect-ultrathin-objects.webp\" width=\"750\" height=\"460\" alt=\"A dual-sensor detection sensor using a 300kHz ultrasonic transducer is used to detect ultrathin objects\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/A-dual-sensor-detection-sensor-using-a-300kHz-ultrasonic-transducer-is-used-to-detect-ultrathin-objects.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/A-dual-sensor-detection-sensor-using-a-300kHz-ultrasonic-transducer-is-used-to-detect-ultrathin-objects-300x184.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/A-dual-sensor-detection-sensor-using-a-300kHz-ultrasonic-transducer-is-used-to-detect-ultrathin-objects-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-dd474d2\" data-block-id=\"dd474d2\"><style>.stk-dd474d2 .stk-block-text__text{font-size:0.9rem !important;}@media screen and (max-width:999px){.stk-dd474d2 .stk-block-text__text{font-size:0.9rem !important;}}<\/style><p class=\"stk-block-text__text has-text-align-center\">Easily identify paper, film, silicon wafers, sticky tape,lithium battery sheets, and PCBs<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Typical industrial applications include:<br>\n<ul><li><strong><a href=\"https:\/\/issrsensor.com\/products\/m12-ultrasonic-double-sheet-detection-sensor\/\" target=\"_blank\">Double sheet detection (through beam \/ projective mode)<\/a><\/strong><br>\nA high frequency transmitter and receiver are placed opposite each other. The received signal differs measurably between:<br>\n<ul><li>no sheet<\/li>\n<li>single sheet<\/li>\n<li>double sheet<\/li><\/ul>\nHigh frequency through beam solutions in the 200\u2013300 kHz range are used here; 300 kHz is often preferred for very thin foils, electrode sheets, or fine paper, where resolution requirements are high.<\/li>\n<li><strong>Material recognition and sorting<\/strong><br>\nIn material sensing mode, 300 kHz can distinguish materials by how they absorb or reflect sound\u2014useful for differentiating paper, plastic, metal, or composite stacks. This is the operating range typically used in material detection sensors.<\/li>\n<li><strong><a href=\"https:\/\/issrsensor.com\/products\/f77-ultrasonic-proximity-switch\/\" target=\"_blank\">High precision proximity switching (selected versions)<\/a><\/strong><br>\nFor example, 0.5 m ultrasonic proximity switches can use 300 kHz transducers to achieve a very small blind zone and a narrow, well defined detection field.<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-529f69f\" data-block-id=\"529f69f\"><style>.stk-529f69f .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">These tasks illustrate why, from among many available transducer types in ultrasound, high frequency ultrasonic sensor transducer designs are selected whenever thin, fast moving, or layered materials must be controlled, or when short range, high precision presence detection is required.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2481e84\" id=\"3-summary-choosing-between-low-and-high-frequency\" data-block-id=\"2481e84\"><h3 class=\"stk-block-heading__text\">3. Summary: Choosing Between Low and High Frequency<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">From a selection point of view, the choice of operating frequency can be summarized as follows:<br>\n<ul><li><strong>Use low  to mid frequency (around 40\u2013120 kHz) when:<\/strong><br>\n<ul><li>You need longer range (up to several meters in air, e.g. 3\u20136 m level measurement).<\/li>\n<li>Targets are relatively large or irregular (e.g. bulk solids, pallets, large tanks).<\/li>\n<li>Installation must be forgiving, with wider beam coverage.<\/li>\n<li>A cost effective, robust solution is more important than extreme precision.<\/li>\n<li>Typical examples include <a href=\" https:\/\/issrsensor.com\/products\/6m-fully-integrated-ultrasonic-ranging-sensor\/\" target=\"_blank\">3\u20136 m level sensors (65\u2013112 kHz)<\/a> e <a href=\" https:\/\/issrsensor.com\/products\/120khz-rectangular-edge-detection-and-correction-ultrasonic-transducer\/\" target=\"_blank\">AGV obstacle avoidance sensors (58 kHz)<\/a>.<\/li><\/ul><\/li>\n<li><strong>Use high frequency (around 180\u2013400 kHz, typically 200\u2013300 kHz) when:<\/strong><br>\n<ul><li>You require short range, high precision measurements, often within 0.15\u20131 m.<\/li>\n<li>You must detect thin sheets, small gaps, or subtle material differences (double sheet detection, edge guiding, material sensing).<\/li>\n<li>Beam control and narrow sound fields are needed due to tight spaces or complex mechanics.<\/li>\n<li>Processes demand fast update rates and quick response.<\/li>\n<li>Esempi tipici sono: <br>\n<ul><li>Short range level sensors (0.15\u20131 m) using 200\u2013400 kHz transducers (e.g. 0.15 m at 400 kHz, 0.35\u20131 m at 200 kHz),<\/li>\n<li>Ultrasonic proximity switches (0.15\u20130.5 m) using 200\u2013400 kHz (e.g. 0.15 m at 400 kHz, 0.25 m at 200 kHz, 0.5 m at 300 kHz), and<\/li>\n<li>300 kHz material sensing and double sheet \/ edge detection sensors.<\/li><\/ul><\/li><\/ul><\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-8c5d019\" data-block-id=\"8c5d019\"><style>.stk-8c5d019 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">In real projects, the operating frequency is usually selected first, and then combined with a suitable detection mode and output configuration.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-c93b280\" id=\"iii-dimension-2-by-output-signal\" data-block-id=\"c93b280\"><h2 class=\"stk-block-heading__text\">III. Dimension 2: By Output Signal<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-2d5ea8b\" data-block-id=\"2d5ea8b\"><style>.stk-2d5ea8b .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">If operating frequency determines what an ultrasonic sensor can \u201csee\u201d, then the output signal determines how easily it can talk to your system. In practice, many selection problems arise not from the sensing principle, but from mismatched outputs: the sensor delivers one type of signal, while the PLC or controller expects another.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">From a system design perspective, output types can be grouped into four main categories:<br>\n<ul><li>1. Switching output (NPN \/ PNP)<\/li>\n<li>2. Analog output (4\u201320 mA \/ 0\u201310 V)<\/li>\n<li>3. Digital output (RS485 \/ TTL level serial)<\/li>\n<li>4. All in one, multi output integrated designs<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-88720b0\" data-block-id=\"88720b0\"><style>.stk-88720b0 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">These categories apply across many types of ultrasonic sensor, regardless of whether the internal ultrasonic transducer is low or high frequency.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-4fd2ccf\" id=\"1-switching-output-npn-pnp\" data-block-id=\"4fd2ccf\"><h3 class=\"stk-block-heading__text\">1. Switching Output: NPN \/ PNP<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-cf07bc2\" id=\"1-1-function\" data-block-id=\"cf07bc2\"><h4 class=\"stk-block-heading__text\">1.1 Function<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-1b75bcd\" data-block-id=\"1b75bcd\"><style>.stk-1b75bcd .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">A switching output turns the sensor into a binary detector: it reports whether a target is present within a defined window or threshold. In this mode, the sensor internally measures the distance but only outputs an ON\/OFF signal.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-a567f72\" data-block-id=\"a567f72\"><style>.stk-a567f72 .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6248\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/NPN-and-PNP-electrical-connection.webp\" width=\"750\" height=\"255\" alt=\"NPN and PNP electrical connection\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/NPN-and-PNP-electrical-connection.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/NPN-and-PNP-electrical-connection-300x102.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/NPN-and-PNP-electrical-connection-18x6.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>NPN<\/strong> output: the sensor pulls the output line to ground when active (sinking).<\/li>\n<li><strong>PNP<\/strong> output: the sensor drives the output line to the positive supply when active (sourcing).<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-1c4c0d8\" data-block-id=\"1c4c0d8\"><style>.stk-1c4c0d8 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Both behave like digital inputs to PLCs or microcontrollers, and are widely used in simple automation tasks.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-037bc80\" id=\"1-2-typical-use-cases\" data-block-id=\"037bc80\"><h4 class=\"stk-block-heading__text\">1.2 Typical use cases<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>Position and presence detection<\/strong><br>\n<ul><li>Detecting whether an object has reached a reference point.<\/li>\n<li>Checking if a pallet is in place, or if a box has arrived at a station.<\/li><\/ul><\/li>\n<li><strong>Counting and throughput monitoring<\/strong><br>\n<ul><li>Counting items on a conveyor, bottles entering a filler, or parts passing a quality gate.<\/li><\/ul><\/li>\n<li><strong>Alarm or limit functions<\/strong><br>\n<ul><li>Triggering alarms when a level exceeds (or falls below) a preset threshold.<\/li><\/ul><\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-8478b30\" data-block-id=\"8478b30\"><style>.stk-8478b30 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">In many plants, this is the most familiar way to use an ultrasonic sensor, as it directly replaces a mechanical limit switch or a photoelectric sensor.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-67decfd\" id=\"1-3-selection-notes\" data-block-id=\"67decfd\"><h4 class=\"stk-block-heading__text\">1.3 Selection notes<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>Check PLC input type<\/strong><br>\nChoose NPN or PNP according to the existing control system standard.<\/li>\n<li><strong>Consider hysteresis and window modes<\/strong><br>\nSome sensors allow separate \u201con\u201d and \u201coff\u201d points or window detection, improving stability and avoiding chatter.<\/li>\n<li><strong>Think beyond distance<\/strong><br>\nEven a high frequency sensor used for double sheet detection can provide switching outputs (e.g. \u201cdouble sheet present \/ not present\u201d), despite being based on a precision ultrasonic sensor transducer.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-14c5a56\" id=\"2-analog-output-4-20-m-a-0-10-v\" data-block-id=\"14c5a56\"><h3 class=\"stk-block-heading__text\">2. Analog Output: 4\u201320 mA \/ 0\u201310 V<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-3c7231e\" id=\"2-1-function\" data-block-id=\"3c7231e\"><h4 class=\"stk-block-heading__text\">2.1 Function<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">With analog output, the ultrasonic sensor provides a continuous signal proportional to measured distance. Two main standards are common:<br>\n<ul><li><strong>4\u201320 mA current output<\/strong><br>\n<ul><li>Industry standard for robust transmission over longer cable runs.<\/li>\n<li>Less sensitive to voltage drop and electrical noise.<\/li><\/ul><\/li>\n<li><strong>0\u201310 V voltage output<\/strong><br>\n<ul><li>Simple to interface with many PLC and DAQ analog inputs.<\/li>\n<li>Better for shorter cable lengths and low noise environments.<\/li><\/ul><\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-c507ed6\" data-block-id=\"c507ed6\"><style>.stk-c507ed6 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Internally, the sensor converts time of flight measurements from its ultrasonic transducer into a scaled analog value over a specified range.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-e5bad8e\" id=\"2-2-typical-use-cases\" data-block-id=\"e5bad8e\"><h4 class=\"stk-block-heading__text\">2.2 Typical use cases<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>Continuous level monitoring<\/strong><br>\n<ul><li>Tanks with liquids or granular materials, where the control system needs the actual level (not just a high\/low alarm).<\/li><\/ul><\/li>\n<li><strong>Distance based process control<\/strong><br>\n<ul><li>Maintaining a specific gap between a tool and a surface.<\/li>\n<li>Adjusting a mechanism based on measured distance or thickness.<\/li><\/ul><\/li>\n<li><strong><a href=\"https:\/\/issrsensor.com\/products\/0-5m-200khz-high-precision-short-form-ultrasonic-distance-sensor\/\" target=\"_blank\">Tension and position control<\/a><\/strong><br>\n<ul><li>In web handling or roll to roll processes, where web loop position or diameter must be kept within a set range.<\/li><\/ul><\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-85f169a\" data-block-id=\"85f169a\"><style>.stk-85f169a .stk-img-figcaption{text-align:center !important;font-size:0.9rem !important;line-height:2em !important;}.stk-85f169a {margin-bottom:0px !important;}.stk-85f169a .stk-img-wrapper{width:100% !important;}@media screen and (max-width:999px){.stk-85f169a .stk-img-figcaption{font-size:0.9rem !important;}}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6246\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Applications-of-ultrasonic-sensor-roll-diameter-control.webp\" width=\"750\" height=\"462\" alt=\"Applications of ultrasonic sensor roll diameter control\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Applications-of-ultrasonic-sensor-roll-diameter-control.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Applications-of-ultrasonic-sensor-roll-diameter-control-300x185.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Applications-of-ultrasonic-sensor-roll-diameter-control-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><figcaption class=\"stk-img-figcaption\">Image source\uff1a<a href=\" https:\/\/www.pepperl-fuchs.com\/nl-nl\/topics\/applications\/measuring-the-roller-diameter-accurately-in-battery-cell-production-ga3185\" target=\"_blank\">Pepperl+Fuchs<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-7f3b185\" id=\"2-3-selection-notes\" data-block-id=\"7f3b185\"><h4 class=\"stk-block-heading__text\">2.3 Selection notes<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>Match the measuring range to process needs<\/strong><br>\nAvoid choosing a sensor with a very large range if you only use a small portion\u2014effective resolution will suffer.<\/li>\n<li><strong>Decide between current and voltage<\/strong><br>\n<ul><li>Use 4\u201320 mA where EMC and cable length are concerns.<\/li>\n<li>Use 0\u201310 V where wiring is short and simple, and the controller is nearby.<\/li><\/ul><\/li>\n<li><strong>Consider response time and filtering<\/strong><br>\nAnalog outputs can be filtered or averaged\u2014verify that the update rate matches process dynamics.<\/li><\/ul><\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-2a2879e\" data-block-id=\"2a2879e\"><style>.stk-2a2879e .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Analog outputs are relevant for both low frequency level sensors and high frequency short range devices, especially where a fine, continuous measurement is needed rather than a simple pass\/fail signal.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-0687e31\" id=\"3-digital-output-rs-485-ttl\" data-block-id=\"0687e31\"><h3 class=\"stk-block-heading__text\">3. Digital Output: RS485 \/ TTL<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-77b7fb6\" id=\"3-1-function\" data-block-id=\"77b7fb6\"><h4 class=\"stk-block-heading__text\">3.1 Function<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Digital outputs transmit numerical distance values or status information directly to a controller or host system. Two common approaches are:<br>\n<ul><li><strong>RS485<\/strong><br>\n<li>Differential, robust, and noise resistant.<\/li>\n<li>Supports multidrop networks and longer cable distances.<\/li>\n<li>Often used with MODBUS or proprietary serial protocols.<\/li><\/ul><\/li>\n<li><strong>TTL level serial (e.g. TTL232 \/ UART)<\/strong><br>\n<ul><li>Logic level serial suitable for direct connection to microcontrollers, embedded boards, or custom electronics.<\/li>\n<li>Typically used over short distances inside devices or panels.<\/li><\/ul><\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-e31169d\" data-block-id=\"e31169d\"><style>.stk-e31169d .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Here, the sensor\u2019s internal electronics handle timing, conditioning, and conversion, and send a digital representation of the measurement, along with optional diagnostic data.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-313f6ec\" id=\"3-2-typical-use-cases\" data-block-id=\"313f6ec\"><h4 class=\"stk-block-heading__text\">3.2 Typical use cases<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-33b023d\" data-block-id=\"33b023d\"><style>.stk-33b023d .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6244\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-of-ultrasonic-sensors-in-AGV-obstacle-avoidance-forklifts.webp\" width=\"750\" height=\"516\" alt=\"Application of ultrasonic sensors in AGV obstacle avoidance forklifts\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-of-ultrasonic-sensors-in-AGV-obstacle-avoidance-forklifts.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-of-ultrasonic-sensors-in-AGV-obstacle-avoidance-forklifts-300x206.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-of-ultrasonic-sensors-in-AGV-obstacle-avoidance-forklifts-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong><a href=\"https:\/\/issrsensor.com\/products\/1m-58khz-dual-angle-robot-agv-obstacle-avoidance-ultrasonic-sensor\/\" target=\"_blank\">Integration into smart devices and robots<\/a><\/strong><br>\n<ul><li>Service robots, AGVs, and specialized machinery where a microcontroller manages multiple ultrasonic probes and other sensors.<\/li><\/ul><\/li>\n<li><strong>Connection to industrial networks<\/strong><br>\n<ul><li>Sensors forming part of a distributed monitoring system, e.g. multiple tank levels or distances connected over RS485.<\/li><\/ul><\/li>\n<li><strong>Custom instrumentation<\/strong><br>\n<ul><li>R&#038;D setups, test stands, or instruments where engineers want full access to time stamped measurements and potentially raw data.<\/li><\/ul><\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-184dcb6\" data-block-id=\"184dcb6\"><style>.stk-184dcb6 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">In this context, engineers often view ultrasonic heads as building blocks\u2014similar to choosing among different ultrasound transducers or ultrasound probe type options\u2014and embed them into larger smart systems.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-348ee68\" id=\"3-3-selection-notes\" data-block-id=\"348ee68\"><h4 class=\"stk-block-heading__text\">3.3 Selection notes<\/h4><\/div>\n\n\n\n<ul><li><strong>Check protocol and addressing<\/strong><br>\nEnsure the sensor\u2019s digital protocol is supported by the PLC, IPC, or embedded controller.<\/li>\n<li><strong>Plan for cable length and noise<\/strong><br>\nRS485 is suitable for longer and more disturbed environments; TTL is best inside compact enclosures.<\/li>\n<li><strong>Look at diagnostic features<\/strong><br>\nSome digital sensors offer temperature compensation, signal quality indicators, or error codes beyond raw distance.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-e54df96\" data-block-id=\"e54df96\"><style>.stk-e54df96 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Digital outputs are especially attractive where long term flexibility matters: firmware can be updated, multiple sensors can share a bus, and more complex logic can be handled in software rather than hard wired.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-6988660\" id=\"4-all-in-one-integrated-output\" data-block-id=\"6988660\"><h3 class=\"stk-block-heading__text\">4. All in One Integrated Output<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-46b9e9b\" id=\"4-1-concept\" data-block-id=\"46b9e9b\"><h4 class=\"stk-block-heading__text\">4.1 Concept<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Some modern ultrasonic sensors adopt a multi output integrated design: a single hardware platform that can support several output types, such as:<br>\n<ul><li>Switching outputs (NPN \/ PNP)<\/li>\n<li>Analog outputs (4\u201320 mA and\/or 0\u201310 V)<\/li>\n<li>Digital serial outputs (e.g. TTL level)<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-68a0f04\" data-block-id=\"68a0f04\"><style>.stk-68a0f04 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">In this architecture, the ultrasonic transducer and signal processing hardware remain the same. What changes is the firmware and configuration, which define how the processed measurement is presented at the output.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-605bcfb\" data-block-id=\"605bcfb\"><style>.stk-605bcfb .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Using a PC based configuration tool or serial port software, the user can update the sensor program and switch the device between different output modes (for example, from switching output to analog output, or to digital serial output) without replacing the physical sensor.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem\">In other words:<br>\n<ul><li>The all in one series does not drive all output types simultaneously in parallel.<\/li>\n<li>Instead, it provides a flexible platform where the active output behavior can be selected via the serial interface according to the actual control system requirements.<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-43ac041\" data-block-id=\"43ac041\"><style>.stk-43ac041 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">In addition to these firmware configurable models, some products offer dual output hardware, where two specific outputs can operate at the same time (for example, switching + analog, or switching + TTL), depending on the integrated electronics. Because the hardware is fixed, each dual output variant supports only its designated two signal types, although the exact hardware combination can be customized before delivery.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-3e98277\" id=\"4-2-benefits\" data-block-id=\"3e98277\"><h4 class=\"stk-block-heading__text\">4.2 Benefits<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">This multi output, firmware configurable approach addresses several common challenges:<br>\n<ul><li><strong>SKU reduction and spare parts management<\/strong><br>\nA single sensor hardware platform can be configured for switching, analog, or digital output as needed. This reduces the number of different part numbers that must be stocked and simplifies logistics and maintenance planning.<\/li>\n<li><strong>On site flexibility and late binding<\/strong><br>\nDuring commissioning or later upgrades, engineers can adjust the output type to match the PLC or controller actually used on site\u2014simply by changing the configuration via serial software, instead of physically replacing the sensor.<\/li>\n<li><strong>Lifecycle adaptability<\/strong><br>\nIf a control system is modernized (for example, moving from purely discrete inputs to analog or digital communication), it is possible to re configure existing ultrasonic sensors to a new output mode, extending their useful life.<\/li><\/ul><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-2809f9c\" data-block-id=\"2809f9c\"><style>.stk-2809f9c .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">For OEMs and system integrators, this concept is somewhat analogous to developing around a common ultrasonic probe platform and then mapping it, via firmware and configuration, to different application needs\u2014rather than managing many separate fixed output variants with different ultrasound probe price points and part numbers.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-b3cb669\" id=\"4-3-when-to-consider-firmware-configurable-multi-output-sensors\" data-block-id=\"b3cb669\"><h4 class=\"stk-block-heading__text\">4.3 When to consider firmware configurable multi output sensors<\/h4><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Such sensors are particularly attractive in the following situations:<br>\n<ul><li><strong>Machines targeted at multiple markets or PLC ecosystems<\/strong><br>\nThe same mechanical and electrical sensor can be shipped with different firmware configurations, matching different brands or generations of controllers in various regions.<\/li>\n<li><strong>Plants focused on maintenance efficiency<\/strong><br>\nMaintenance teams can keep one spare sensor type and configure its output mode as needed, reducing both inventory and downtime.<\/li>\n<li><strong>Projects with uncertain or evolving requirements<\/strong><br>\nWhen it is not yet clear whether the final system will rely primarily on switching, analog, or digital signals\u2014or when future networking and data acquisition are anticipated\u2014a firmware configurable, multi output ultrasonic sensor provides useful headroom.<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-c81ef61\" id=\"5-summary-matching-output-to-the-application\" data-block-id=\"c81ef61\"><h3 class=\"stk-block-heading__text\">5. Summary: Matching Output to the Application<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">When selecting among different types of ultrasonic sensor, output signal is as critical as operating frequency:<br>\n<ul><li>Choose NPN \/ PNP switching outputs for simple presence, counting, or limit detection.<\/li>\n<li>Choose analog 4\u201320 mA \/ 0\u201310 V when a continuous distance or level signal is needed for control loops.<\/li>\n<li>Choose digital RS485 or TTL when smart devices, networking, diagnostics, or deep integration with embedded systems are required.<\/li>\n<li>Consider all in one, multi output designs when you need flexibility across different controllers, want to reduce SKUs, or expect system upgrades during the equipment\u2019s lifetime.\n<\/li><\/ul><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-52efa00\" id=\"iv-dimension-3-by-detection-mode\" data-block-id=\"52efa00\"><h2 class=\"stk-block-heading__text\">IV. Dimension 3: By Detection Mode<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-a1a9917\" data-block-id=\"a1a9917\"><style>.stk-a1a9917 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Once the operating frequency and output signal are decided, the next key question is: how does the ultrasonic sensor interact with the target? This is defined by the detection mode. Even with the same frequency and similar ultrasonic transducer hardware, different detection modes can lead to very different real world performance and application ranges.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0f952dc\" data-block-id=\"0f952dc\"><style>.stk-0f952dc .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">For airborne industrial ultrasonic sensor systems, detection modes are commonly divided into three groups:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-575fbcd\" data-block-id=\"575fbcd\"><style>.stk-575fbcd .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6249\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Three-working-modes-of-ultrasonic-sensor.webp\" width=\"750\" height=\"300\" alt=\"Tre modalit\u00e0 di lavoro del sensore a ultrasuoni\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Three-working-modes-of-ultrasonic-sensor.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Three-working-modes-of-ultrasonic-sensor-300x120.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Three-working-modes-of-ultrasonic-sensor-18x7.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem\"><li>1. Diffuse reflection mode (distance \/ level sensing)<\/li>\n<li>2. Through beam \/ projective mode<\/li>\n<li>3. Material sensing and special reflection modes<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-fb7f607\" data-block-id=\"fb7f607\"><style>.stk-fb7f607 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">These modes all rely on the same basic physics of ultrasound transducers, but they differ in sound path geometry and in how the received signal is evaluated.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-7f906a4\" id=\"1-diffuse-reflection-mode-distance-level-sensing\" data-block-id=\"7f906a4\"><h3 class=\"stk-block-heading__text\">1. Diffuse Reflection Mode: Distance \/ Level Sensing<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-15bd8b8\" data-block-id=\"15bd8b8\"><style>.stk-15bd8b8 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Diffuse reflection is the \u201cclassic\u201d mode for many ultrasonic sensors used in distance and level \/ material level applications.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-3b30d73\" id=\"1-1-principle\" data-block-id=\"3b30d73\"><h4 class=\"stk-block-heading__text\">1.1 Principle<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem\"><li>The sensor and target are on the same side.<\/li>\n<li>The built in ultrasonic transducer emits a sound pulse into free air.<\/li>\n<li>The pulse is reflected from the object surface and returns to the same sensor.<\/li>\n<li>The electronics measure the time of flight (TOF) between transmission and reception and convert it into distance, using the speed of sound in air.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-6135067\" data-block-id=\"6135067\"><style>.stk-6135067 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Sound path:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-cf5a72e\" data-block-id=\"cf5a72e\"><style>.stk-cf5a72e .stk-block-text__text{font-size:1.2rem !important;color:var(--theme-palette-color-4, #1c1c1c) !important;font-weight:700 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}@media screen and (max-width:999px){.stk-cf5a72e .stk-block-text__text{font-size:1.2rem !important;}}<\/style><p class=\"stk-block-text__text has-text-color has-text-align-center\">Sensor \u2192 Target \u2192 Sensor<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Most industrial ultrasonic distance and level \/ material level sensors work in this diffuse reflection mode. Across the market, this mode covers a wide range of operating frequencies, typically chosen according to the required measuring distance and resolution:<br>\n<ul><li><strong>Very short ranges and very small blind zones<\/strong><br>\nFor example a few centimeters up to a few tens of centimeters.\nSensors often use higher ultrasonic frequencies in the hundreds of kilohertz (such as 300\u2013400 kHz), in order to achieve fine resolution and a narrow beam.\nIn typical product families, 0.15 m class sensors for compact level\/proximity tasks use around 400 kHz transducers.<\/li>\n<li><strong>Short  to mid range level and distance measurements (roughly 0.3\u20132 m)<\/strong><br>\nFrequencies in the mid  to high frequency range (around 150\u2013250 kHz) are common. These offer a good compromise between beam angle, measuring range, and accuracy.\nPractical examples include 0.35\u20131 m sensors using around 180\u2013200 kHz, and 2 m sensors around 180 kHz.<\/li>\n<li><strong>Longer ranges (for example 2\u20136 m tank or silo level measurement, or long range distance detection)<\/strong><br>\nSensors typically use lower ultrasonic frequencies in the tens of kilohertz to low hundreds of kilohertz range (around 60\u2013120 kHz), which propagate farther in air and are less attenuated.\nTypical values include 3 m at 112 kHz, 4 m at 75 kHz, and 6 m at 65 kHz.<\/li><\/ul><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Different manufacturers and product lines will choose specific frequencies within these bands, but the general trend is:<br>\n<ul><li><strong>Shorter range \/ higher resolution \u2192 higher frequency<\/strong><\/li>\n<li><strong>Longer range \/ larger coverage \u2192 lower frequency<\/strong><\/li><\/ul><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0890cfd\" data-block-id=\"0890cfd\"><style>.stk-0890cfd .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">This diffuse reflection operating mode is independent of the output type (switching, analog, or digital). The same principle underlies distance sensors, level \/ material level sensors, and many ultrasonic proximity switches\u3002<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-41b7d38\" id=\"1-2-typical-applications\" data-block-id=\"41b7d38\"><h4 class=\"stk-block-heading__text\">1.2 Typical applications<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-69493c2\" data-block-id=\"69493c2\"><style>.stk-69493c2 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Because the same basic diffuse reflection mode is used, many distance measurement sensors can also be used for level \/ material level detection simply by mounting them at the top of a tank, bin, or process space.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Esempi tipici sono:<br>\n<ul><li><strong>Tank and silo level \/ material level measurement<\/strong><br>\n<ul><li>Measuring liquids (water, chemicals, oils) and bulk solids (grains, plastic pellets, powders).<\/li>\n<li>Short, compact tanks and process vessels (sub meter to a few meters) often use mid  to high frequency sensors to minimize blind zone and improve resolution (for example 0.35\u20131 m using around 180\u2013200 kHz).<\/li>\n<li>Taller tanks or silos with several meters of measuring range typically use lower frequency sensors (for example 3\u20136 m using 65\u2013112 kHz), providing a longer working distance and more robust echo in dusty or vapor laden atmospheres.<\/li><\/ul><\/li>\n<li><strong>General distance and clearance measurement<\/strong><br>\n<ul><li>Detecting the distance to pallets, walls, machine parts, or fixtures.<\/li>\n<li>Measuring approach distance or safety clearance in handling and positioning systems.<\/li><\/ul><\/li>\n<li><strong>Presence \/ absence detection<\/strong><br>\n<ul><li>Detecting boxes, trays, or pallets on conveyors.<\/li>\n<li>Monitoring whether a loading bay, buffer position, or workstation is occupied.<\/li><\/ul><\/li>\n<li><strong>Ultrasonic proximity switching<\/strong><br>\n<ul><li>Short range presence and approach detection using the same diffuse reflection principle, often with higher frequencies for compact sensing distances (for example 0.15\u20130.5 m proximity switches using 200\u2013400 kHz).<\/li><\/ul><\/li>\n<li><strong>AGV and robot obstacle detection<\/strong><br>\n<ul><li>Forward looking obstacle sensing for AGVs and mobile robots in warehouses and factories, where relatively low frequency sensors (for example tens of kilohertz, typically around 58 kHz) are used to achieve several meters of coverage with a suitably wide beam.<\/li><\/ul><\/li><\/ul><\/div><br>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-2dc1dde\" data-block-id=\"2dc1dde\"><style>.stk-2dc1dde .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6069\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-scenarios-of-liquid-level-and-material-level-measurement.webp\" width=\"498\" height=\"343\" alt=\"Application scenarios of liquid level and material level measurement\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-scenarios-of-liquid-level-and-material-level-measurement.webp 498w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Application-scenarios-of-liquid-level-and-material-level-measurement-300x207.webp 300w\" sizes=\"auto, (max-width: 498px) 100vw, 498px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-01f2fc3\" data-block-id=\"01f2fc3\"><style>.stk-01f2fc3 .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-6251\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Ultrasonic-sensors-detect-the-presence-of-cartons-pallets-and-turnover-boxes-on-the-conveyor-line.webp\" width=\"750\" height=\"489\" alt=\"Ultrasonic sensors detect the presence of cartons, pallets, and turnover boxes on the conveyor line\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Ultrasonic-sensors-detect-the-presence-of-cartons-pallets-and-turnover-boxes-on-the-conveyor-line.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Ultrasonic-sensors-detect-the-presence-of-cartons-pallets-and-turnover-boxes-on-the-conveyor-line-300x196.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/Ultrasonic-sensors-detect-the-presence-of-cartons-pallets-and-turnover-boxes-on-the-conveyor-line-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-4232b62\" data-block-id=\"4232b62\"><style>.stk-4232b62 .stk-block-text__text{font-size:0.9rem !important;}@media screen and (max-width:999px){.stk-4232b62 .stk-block-text__text{font-size:0.9rem !important;}}<\/style><p class=\"stk-block-text__text has-text-align-center\">Transparent materials, plastic, film, metal, and liquid glass can all be detected without being affected by the material, making it a versatile device.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-bfe3dc6\" id=\"1-3-advantages\" data-block-id=\"bfe3dc6\"><h4 class=\"stk-block-heading__text\">1.3 Advantages<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>One sided installation<\/strong><br>\nOnly one sensor is required; easy to integrate and retrofit on existing machines or tanks.<\/li>\n<li><strong>Insensitive to color and transparency<\/strong><br>\nWorks reliably with dark, shiny, or transparent materials where optical sensors may fail.<\/li>\n<li><strong>Wide selection of standard products<\/strong><br>\nA large portion of catalog ultrasonic sensors for industrial automation are diffuse reflection devices, covering both long range level applications and short range precision distance tasks.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-a7a1a4d\" id=\"1-4-limitations\" data-block-id=\"a7a1a4d\"><h4 class=\"stk-block-heading__text\">1.4 Limitations<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>Dependent on surface reflectivity<\/strong><br>\nVery soft, highly absorbing, or strongly textured surfaces may produce weak or unstable echoes.<\/li>\n<li><strong>Beam shape and blind zone must be considered<\/strong><br>\nThe near field blind zone and beam spread must be matched to tank geometry, minimum measuring distance, and target size.<\/li>\n<li><strong>Not ideal for very thin layers or multi layer distinction<\/strong><br>\nThe sensor primarily detects the first surface; fine internal structures or very thin gaps behind that surface are not easily separated.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-44ebfb1\" data-block-id=\"44ebfb1\"><style>.stk-44ebfb1 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">When the core requirement is \u201cmeasure the distance to the nearest surface\u201d\u2014for example, level, material level, clearance, or approach distance\u2014diffuse reflection mode with a suitable frequency and beam pattern is usually the most straightforward and widely applicable choice.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-5258a2a\" id=\"2-through-beam-projective-mode\" data-block-id=\"5258a2a\"><h3 class=\"stk-block-heading__text\">2. Through Beam \/ Projective Mode<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f91e4ad\" data-block-id=\"f91e4ad\"><style>.stk-f91e4ad .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Through beam (or projective) mode uses a separate transmitter and receiver pair. The key question in this mode is not \u201chow far is the target?\u201d, but rather \u201cwhat is inside the sound path between transmitter and receiver?\u201d<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2fa6934\" id=\"2-1-principle\" data-block-id=\"2fa6934\"><h4 class=\"stk-block-heading__text\">2.1 Principle<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li>One device (or channel) functions as a dedicated ultrasonic transmitter.<\/li>\n<li>A second device functions as the receiver.<\/li>\n<li>Transmitter and receiver are mounted facing each other, forming a fixed sound path.<\/li>\n<li>The presence, thickness, or position of material within this path changes the received signal (typically the amplitude or energy; sometimes also phase or timing).<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-1c9115f\" data-block-id=\"1c9115f\"><p class=\"stk-block-text__text\">Sound path:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-01be643\" data-block-id=\"01be643\"><style>.stk-01be643 .stk-block-text__text{font-size:1.2rem !important;color:var(--theme-palette-color-4, #1c1c1c) !important;font-weight:700 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}@media screen and (max-width:999px){.stk-01be643 .stk-block-text__text{font-size:1.2rem !important;}}<\/style><p class=\"stk-block-text__text has-text-color has-text-align-center\">Transmitter \u2192 Material \u2192 Receiver<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-482c98f\" data-block-id=\"482c98f\"><style>.stk-482c98f .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Through beam systems often use higher ultrasonic frequencies (on the order of a few hundred kilohertz) to obtain narrow beams and high sensitivity to edges and small thickness changes\u3002Typical double sheet detection and web edge guiding products fall into this category.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-e4369be\" id=\"2-2-typical-applications\" data-block-id=\"e4369be\"><h4 class=\"stk-block-heading__text\">2.2 Typical applications<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>Double sheet detection (through beam)<\/strong><br>\n<ul><li>Distinguishing between \u201cno sheet \/ single sheet \/ double sheet\u201d in feeders and stackers.<\/li>\n<li>Widely used in printing, packaging, metal stamping, and battery electrode sheet handling.<\/li>\n<li>Typically uses 200\u2013300 kHz high frequency through beam transducers, with 300 kHz especially suitable for very thin electrode plates or fine paper.<\/li><\/ul><\/li>\n<li><strong>Edge detection and web guiding (projective mode)<\/strong><br>\n<ul><li>A tightly focused ultrasonic beam is partially covered by the web edge.<\/li>\n<li>Small lateral movements of the web cause reproducible changes in received signal level, enabling accurate edge guiding and tracking.<\/li><\/ul><\/li>\n<li><strong>Small part and slot detection<\/strong><br>\n<ul><li>Detecting small components passing through a chute or narrow channel.<\/li>\n<li>Verifying that a particular position or slot is correctly occupied.<\/li><\/ul><\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-9778745\" id=\"2-3-advantages\" data-block-id=\"9778745\"><h4 class=\"stk-block-heading__text\">2.3 Advantages<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>High sensitivity to small changes in coverage<\/strong><br>\nVery effective for thin sheets, small gaps, and precise edge positions.<\/li>\n<li><strong>Independent of background distance<\/strong><br>\nThe receiver mainly responds to the direct sound path; distant walls or machine parts have little influence.<\/li>\n<li><strong>Clear interpretation<\/strong><br>\nChanges in transmitted acoustic energy correspond directly to changes in material inside the beam.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-02fea00\" id=\"2-4-limitations\" data-block-id=\"02fea00\"><h4 class=\"stk-block-heading__text\">2.4 Limitations<\/h4><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>Requires access to both sides<\/strong><br>\nThe process path must allow mounting and alignment of both the transmitter and the receiver.<\/li>\n<li><strong>Alignment is critical<\/strong><br>\nMisalignment or mechanical drift can reduce signal strength and cause instability.<\/li>\n<li><strong>Less mechanically flexible<strong><br>\nLater changes such as adding guards, shields, or brackets must be designed not to obstruct the sound path.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-07295e4\" data-block-id=\"07295e4\"><style>.stk-07295e4 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">When the task is to detect thin, moving, or layered materials, or to track an edge with high precision, through beam \/ projective mode is usually superior to simple diffuse reflection and is often implemented with specially designed high frequency ultrasonic transducers.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-f99cfa3\" id=\"3-material-sensing-amp-special-reflection-modes\" data-block-id=\"f99cfa3\"><h3 class=\"stk-block-heading__text\">3. Material Sensing &amp; Special Reflection Modes<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9ea558e\" data-block-id=\"9ea558e\"><style>.stk-9ea558e .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Beyond \u201cdistance\u201d (TOF) and \u201cblocking\u201d (through beam), there is a third class of applications: material sensing, where the goal is to infer material type or structure from how it reflects and attenuates sound, rather than just where it is.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ae29115\" id=\"3-1-material-sensing-based-on-reflection\" data-block-id=\"ae29115\"><h4 class=\"stk-block-heading__text\">3.1 Material sensing based on reflection<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-612d958\" data-block-id=\"612d958\"><style>.stk-612d958 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">In many material sensing ultrasonic systems, the underlying geometry is still reflection mode: the sensor and object are on the same side, and the transducer sends a pulse and listens for the echo.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem\">The difference lies in what is evaluated:<br>\n<ul><li>In distance sensing, the main variable is time of flight.<\/li>\n<li>In material sensing, the main variables are echo energy, attenuation, and the amplitude \/ time pattern of the returning signal.<\/li><\/ul>\nKey idea:<br>\nDifferent materials and surface structures have different:<br>\n<ul><li>acoustic impedance<\/li>\n<li>absorption \/ damping characteristics<\/li>\n<li>surface texture \/ roughness<\/li><\/ul>\nThese differences lead to characteristic changes in:<br>\n<ul><li>Overall reflected energy level (echo strength)<\/li>\n<li>Attenuation relative to a reference pulse<\/li>\n<li>The echo envelope or amplitude distribution over time<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-c8b4029\" data-block-id=\"c8b4029\"><style>.stk-c8b4029 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">By measuring and comparing these parameters, a <a href=\"https:\/\/issrsensor.com\/products\/300khz-ultrasonic-material-testing-sensor-for-robotic-vacuum-cleaners\/\" target=\"_blank\">sensore<\/a> can classify or distinguish materials, not just measure distance. For this purpose, relatively high ultrasonic frequencies (typically in the hundreds of kilohertz, such as 300 kHz) are common, because they are more sensitive to surface structure and near surface absorption\u3002Typical material detection sensors belong to this class.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Typical uses include:<br>\n<ul><li><strong>Material type identification<\/strong><br>\n<ul><li>Distinguishing between stone (e.g. marble), wood, carpets, foams, and other materials based on their acoustic response.<\/li>\n<li>Useful for sorting, verification, or quality inspection.<\/li><\/ul><\/li>\n<li><strong>Layer or coating verification<\/strong><br>\n<ul><li>Detecting whether a particular coating, lining, or backing layer is present, by comparing reflection levels and attenuation patterns.<\/li><\/ul><\/li>\n<li><strong>Extended double sheet \/ stack analysis<\/strong><br>\n<ul><li>Differentiating between different stacking or lamination structures via their reflection \/ attenuation curves.<\/li><\/ul><\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0ab5ef8\" data-block-id=\"0ab5ef8\"><style>.stk-0ab5ef8 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">These applications often use high frequency probes with tailored beam patterns and dedicated signal processing algorithms. The core physical principle remains reflection, but with more emphasis on energy and attenuation than on timing alone.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-63ccfd6\" id=\"3-2-special-sound-path-arrangements\" data-block-id=\"63ccfd6\"><h4 class=\"stk-block-heading__text\">3.2 Special sound path arrangements<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ab51918\" data-block-id=\"ab51918\"><style>.stk-ab51918 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">To accommodate real machine layouts, some ultrasonic sensors use special sound path arrangements achieved primarily through mechanical design of the probe and housing, while the underlying sensing principle (diffuse reflection, through beam, or material sensing) stays the same.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Common examples include:<br>\n<ul>\n    <li><strong><a href=\"https:\/\/issrsensor.com\/products\/1m-200khz-square-adjustable-detection-direction-ultrasonic-distance-sensor-with-synchronization-function\/\" target=\"_blank\">Axially Rotatable \/ Beam Alignment Heads<\/a><\/strong><br>\n    <ul>\n        <li>The sensor head can be rotated along its center axis to adjust the orientation of the <strong>asymmetric sound cone<\/strong>.<\/li>\n        <li>Since the beam width differs on the X and Y axes, this rotation allows users to <strong>align the optimal detection field<\/strong> (e.g., wide beam for coverage, narrow beam for separation) without changing the mounting bracket.<\/li>\n        <li>Critical for applications like <strong>conveyor belt dimensioning<\/strong>, ensuring the acoustic footprint matches the target geometry perfectly.<\/li>\n    <\/ul><\/li>\n    <li><strong><a href=\"https:\/\/issrsensor.com\/products\/1m-200khz-right-angle-90-degree-bend-fully-integrated-ultrasonic-distance-sensor\/\" target=\"_blank\">Integrated 90\u00b0 \/ Side Looking Versions<\/a><\/strong><br>\n    <ul>\n        <li>The transducer is arranged so that its main emission axis is perpendicular to the sensor housing.<\/li>\n        <li>The sound path is not redirected by external reflectors; the probe itself is oriented to \u201clook sideways\u201d.<\/li>\n        <li>This is suitable for narrow spaces, near wall installation, or when the housing must be aligned with a frame but the sensing direction must be lateral (for example, elbow type 90\u00b0 distance sensors).<\/li>\n    <\/ul><\/li>\n<\/ul>\nSuch mechanical variants are still based on standard air coupled ultrasonic transducers, but their geometric design is optimized to:<br>\n<ul>\n    <li>Optimize the <strong>beam pattern alignment<\/strong> (X\/Y axis)<\/li>\n    <li>Fit into tight or obstructed spaces<\/li>\n    <li>Maintain a stable, repeatable sound path under industrial conditions<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-646de48\" data-block-id=\"646de48\"><style>.stk-646de48 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">From a user\u2019s perspective, these arrangements make it easier to apply the same basic ultrasonic principles (distance, through beam, or material sensing) to complex machine geometries, without changing electronics or core sensing concepts.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-54f7988\" id=\"4-summary-matching-detection-mode-to-the-application\" data-block-id=\"54f7988\"><h3 class=\"stk-block-heading__text\">4. Summary: Matching Detection Mode to the Application<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">When selecting among different types of ultrasonic sensor, detection mode is as critical as operating frequency and output signal:<br>\n<ul><li><strong>Diffuse reflection mode<\/strong><br>\n<ul><li>Best for distance and level \/ material level measurement, presence detection, and obstacle sensing.<\/li>\n<li>One sided installation, wide range of standard industrial products.<\/li>\n<li>Most general purpose distance sensors can also be used for level \/ material level monitoring.<\/li><\/ul><\/li>\n<li><strong>Through beam \/ projective mode<\/strong><br>\n<ul><li>Best for double sheet detection, web edge guiding, and small part passage.<\/li>\n<li>Uses a separate transmitter and receiver across the process path, often at higher frequencies to achieve narrow beams.<\/li><\/ul><\/li>\n<li><strong>Material sensing &#038; special reflection modes<\/strong><br>\n<ul><li>Best when the objective is to distinguish or classify materials, verify layer structures, or work under special geometric constraints.<\/li>\n<li>Still reflection based, but the evaluation focuses on echo energy and attenuation rather than only time of flight.<\/li><\/ul><\/li><\/ul>\n<\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">In practice, an optimal ultrasonic solution always combines three dimensions:<br>\n<ul style=\"list-style-type: none\"><li>1. Operating frequency (short range \/ high frequency vs. long range \/ low frequency)<\/li>\n<li>2. Output signal type (switching, analog, digital, or configurable multi output)<\/li>\n<li>3. Detection mode (diffuse reflection, through beam, or material sensing)<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-33df838\" id=\"v-dimension-4-by-application-scenario\" data-block-id=\"33df838\"><h2 class=\"stk-block-heading__text\">V. Dimension 4: By Application Scenario<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-448cf5e\" data-block-id=\"448cf5e\"><style>.stk-448cf5e .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Once frequency, output type, and detection mode are clear, the most practical way to choose an ultrasonic sensor is to start from the application scenario.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Different applications naturally lead to different choices of:<br>\n<ul><li>Frequency ranges (high vs. low)<\/li>\n<li>Detection modes (diffuse reflection, through beam, material sensing)<\/li>\n<li>Output types (switching, analog, digital)<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-4a90d2a\" data-block-id=\"4a90d2a\"><style>.stk-4a90d2a .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">The sections below illustrate how these choices are typically combined in real industrial use cases.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-0b76929\" id=\"1-level-measurement-approx-0-15-6-m\" data-block-id=\"0b76929\"><h3 class=\"stk-block-heading__text\">1. Level Measurement (Approx. 0.15\u20136 m)<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-a356623\" data-block-id=\"a356623\"><style>.stk-a356623 .stk-block-text__text{color:var(--theme-palette-color-4, #1c1c1c) !important;font-weight:600 !important;}<\/style><p class=\"stk-block-text__text has-text-color\">Typical task<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-bc95de9\" data-block-id=\"bc95de9\"><style>.stk-bc95de9 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Non contact measurement of liquid or bulk solid level in tanks, bins, and containers.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-55fd853\" data-block-id=\"55fd853\"><style>.stk-55fd853 .stk-block-text__text{color:var(--theme-palette-color-4, #1c1c1c) !important;font-weight:600 !important;}<\/style><p class=\"stk-block-text__text has-text-color\">Detection mode<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-1910329\" data-block-id=\"1910329\"><style>.stk-1910329 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Diffuse reflection (time of flight measurement of the distance to the surface).<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-cd06177\" data-block-id=\"cd06177\"><style>.stk-cd06177 .stk-block-text__text{color:var(--theme-palette-color-4, #1c1c1c) !important;font-weight:600 !important;}<\/style><p class=\"stk-block-text__text has-text-color\">Typical outputs<\/p><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li>Analog output (4\u201320 mA \/ 0\u201310 V) for continuous level<\/li>\n<li>Switching outputs for high \/ low level alarms<\/li>\n<li>Optional digital \/ serial communication for integration into control systems<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2cf8782\" id=\"1-1-short-range-level-up-to-approx-1-m\" data-block-id=\"2cf8782\"><h4 class=\"stk-block-heading__text\">1.1 Short range level (up to approx. 1 m)<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0a50e7f\" data-block-id=\"0a50e7f\"><style>.stk-0a50e7f .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">For compact tanks and shallow vessels, higher ultrasonic frequencies are commonly used to achieve a short blind zone and a narrow, precise beam.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Typical combinations (aligned with practical sensor families):<br>\n<ul><li><strong><a href=\"https:\/\/issrsensor.com\/products\/0-15m-400khz-ultra-high-precision-short-form-ultrasonic-distance-sensor\/\" target=\"_blank\">Very short distances (around 0.15 m)<\/a><\/strong><br>\n<ul><li>Ultrasonic frequencies around 400 kHz<\/li>\n<li>Extremely short blind zones and high resolution for compact level spaces<\/li><\/ul><\/li>\n<li><strong>Distances up to roughly 0.35\u20130.5 m<\/strong><br>\n<ul><li>Ultrasonic frequencies around 180\u2013200 kHz<\/li>\n<li>Good compromise between beam width and accuracy<\/li><\/ul><\/li>\n<li><strong>Distances up to roughly 1 m<\/strong><br>\n<ul><li>Ultrasonic frequencies around 200 kHz<\/li>\n<li>Still relatively small blind zone, sufficient range for most compact process tanks<\/li><\/ul><\/li><\/ul>\nAdvantages of higher frequency in this range<br>\n<ul><li>Very small minimum measuring distance<\/li>\n<li>High resolution and good repeatability<\/li>\n<li>Compact sound beam, ideal for small tanks and tight installation spaces<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-82a0c5b\" id=\"1-2-medium-range-level-approx-1-6-m\" data-block-id=\"82a0c5b\"><h4 class=\"stk-block-heading__text\">1.2 Medium range level (approx. 1\u20136 m)<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b0d0981\" data-block-id=\"b0d0981\"><style>.stk-b0d0981 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">For larger tanks and higher silos, lower ultrasonic frequencies are preferred to ensure sufficient echo strength over longer distances.<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\"><strong>Typical combinations:<\/strong><br>\n<ul><li>Measuring distances of a few metres (for example 2\u20136 m)<\/li>\n<li>Ultrasonic frequencies in the lower to mid range, such as: <br>\n<ul><li>2 m: around 180 kHz<\/li>\n<li>3 m: around 112 kHz<\/li>\n<li>4 m: around 75 kHz<\/li>\n<li>6 m: around 65 kHz<\/li><\/ul><\/li>\n<li>Longer wavelength and lower attenuation in air support stable measurement over several metres<\/li><\/ul>\n<strong>Advantages of lower frequency for long range<\/strong><br>\n<ul><li>Better propagation through air over several metres<\/li>\n<li>Stable echo from liquid and bulk material surfaces<\/li>\n<li>Higher robustness against dust, light vapours, and air movement<\/li><ul>\n<strong>Typical selection guideline for level measurement<\/strong><br>\n<ul><li>Approx. 0.15\u20131 m: use higher frequencies (roughly 180\u2013400 kHz)<\/li>\n<li>Approx. 1\u20136 m: use lower to mid frequencies (roughly 60\u2013180 kHz)<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0d37aec\" data-block-id=\"0d37aec\"><style>.stk-0d37aec .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Specific cut off values depend on the sensor design, tank geometry, and required resolution, but the general trend remains: <strong>shorter range \u2192 higher frequency; longer range \u2192 lower frequency.<\/strong><\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-43632a6\" id=\"2-ultrasonic-proximity-switches-approx-0-15-0-5-m\" data-block-id=\"43632a6\"><h3 class=\"stk-block-heading__text\">2. Ultrasonic Proximity Switches (Approx. 0.15\u20130.5 m)<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\"><strong>Typical task<\/strong><br>\nShort range presence and distance switching, largely independent of material, as an alternative or complement to inductive and capacitive proximity switches.<br>\n<strong>Detection mode<\/strong><br>\nDiffuse reflection (short range distance \/ presence detection).<br>\n<strong>Typical outputs<\/strong><br>\n<ul><li>Switching outputs (NPN \/ PNP)<\/li>\n<li>Often with teach in or adjustable switching points<\/li>\n<li>In some variants, a short range analog output<\/li><\/ul>\n<strong>Frequency ranges used in proximity switches<\/strong><br>\nTo obtain compact and well defined detection zones, higher frequency ultrasonic transducers are typically used. For example, in practical product families:<br>\n<ul><li>0.15 m switching distance: Ultrasonic frequency around 400 kHz<\/li>\n<li>0.25 m switching distance: Ultrasonic frequency around 200 kHz<\/li>\n<li>0.5 m switching distance: Ultrasonic frequency around 300 kHz<\/li><\/ul>\nThese are all within the mid  to high hundreds of kilohertz range, creating tight, clearly defined sensing fields.<br>\n<strong>Benefits in this application<\/strong><br>\n<ul><li>Tight and clearly defined sensing fields<\/li>\n<li>Very small blind zone directly in front of the sensor<\/li>\n<li>High repeatability of switching distances<\/li><\/ul>\nIn addition, compact housings, square heads, and optional angle adjustable or 90\u00b0 side looking designs make such proximity sensors easier to integrate into machinery with limited space or non standard mounting directions.<br>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-5a77d02\" id=\"3-material-energy-based-detection\" data-block-id=\"5a77d02\"><h3 class=\"stk-block-heading__text\">3. Material \/ Energy Based Detection<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\"><strong>Typical task<\/strong><br>\nIdentify or verify materials by their ultrasonic reflection and attenuation characteristics, not just by distance. Typical uses include:<br>\n<ul><li>Differentiating between materials such as marble, wood, carpet, foam, etc.<\/li>\n<li>Checking the presence of backing layers, coatings, or composite structures<\/li>\n<li>Using changes in echo energy as an indicator for product quality or process state<\/li><\/ul>\n<strong>Detection mode<\/strong><br>\n<ul><li>Reflection mode with material sensing \/ energy based evaluation<\/li>\n<li>The sensor evaluates echo amplitude and attenuation, in addition to or instead of simple time of flight<\/li><\/ul>\n<strong>Frequency used<\/strong><br>\n<ul><li>Relatively high ultrasonic frequencies (commonly on the order of a few hundred kilohertz, for example around 300 kHz) are used to obtain high sensitivity to surface structure and internal attenuation differences.<\/li><\/ul>\n<strong>Why high frequency is used for material detection<\/strong><br>\n<ul><li>High enough to be sensitive to surface texture and near surface absorption<\/li>\n<li>Provides fine \u201cacoustic contrast\u201d between different materials<\/li>\n<li>Still robust for typical air paths in industrial environments<\/li><\/ul>\n<strong>Typical outputs<\/strong><br>\n<ul><li>Switching outputs for OK \/ NG or correct \/ incorrect material<\/li>\n<li>Optional digital \/ serial outputs providing signal level, energy metrics, or classification results<\/li><\/ul>\nThis type of ultrasonic sensing is ideal where the key question is not only \u201cis something there?\u201d but also \u201cis it the right material or structure?\u201d\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-5f1cbe9\" id=\"4-web-sheet-and-edge-applications\" data-block-id=\"5f1cbe9\"><h3 class=\"stk-block-heading__text\">4. Web, Sheet, and Edge Applications<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\"><strong>Typical tasks<\/strong><br>\n<ul><li>Double sheet detection in printing, packaging, and electrode feeding<\/li>\n<li>Web edge guiding and lateral position control for films, paper, foil, or textiles<\/li><\/ul>\n<strong>Double sheet detection:<\/strong><br>\n<strong>Detection mode<\/strong><br>\n<ul><li>Through beam \/ projective mode (transmitter on one side, receiver on the other)<\/li><\/ul>\n<strong>Frequency range<\/strong>\n<ul><li>Typically higher frequency transducers (for example, roughly 200\u2013300 kHz) to provide high sensitivity to thin layers and changes in coverage. <br>\n<ul><li>Around 300 kHz is often preferred for very thin foils, electrode sheets, or fine paper.<\/li><\/ul><\/li><\/ul>\n<strong>Typical outputs<\/strong>\n<ul><li>Switching outputs to distinguish no sheet \/ single sheet \/ double sheet<\/li>\n<li>Optional digital diagnostic information (signal level, margin) for advanced control or setup<\/li><\/ul>\n<strong>Web edge guiding and position control:<\/strong><br>\n<strong>Detection mode<\/strong><br>\n<ul><li>Through beam or side looking diffuse reflection, depending on machine layout<\/li><\/ul>\n<strong>Frequency range<\/strong><br>\n<ul><li>Medium to high frequencies (e.g. around 200\u2013300 kHz) for a narrow and stable beam, enabling precise edge tracking<\/li><\/ul>\n<strong>Typical outputs<\/strong><br>\n<ul><li>Analog signals proportional to edge position<\/li>\n<li>Optional digital outputs or bus interfaces for integration with web guiding controllers<\/li><\/ul>\nMechanical designs with square heads, rotating heads, and 90\u00b0 orientations allow flexible mounting directly at the web edge or near rollers, helping to align the ultrasonic beam with the material path.\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-f8bfa5f\" id=\"5-agv-and-mobile-robot-obstacle-avoidance\" data-block-id=\"f8bfa5f\"><h3 class=\"stk-block-heading__text\">5. AGV and Mobile Robot Obstacle Avoidance<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\"><strong>Typical task<\/strong><br>\nDetect obstacles in front of AGVs and mobile robots to provide early warning and safe stopping distances.<br>\n<strong>Detection mode<\/strong><br>\nDiffuse reflection (distance \/ obstacle detection).\n<strong>Typical outputs<\/strong><br>\n<ul><li>Multiple switching thresholds (e.g. warning zone, stop zone)<\/li>\n<li>Optional distance information via digital communication interfaces<\/li><\/ul>\n<strong>Frequency used<\/strong><br>\nObstacle avoidance sensors for AGVs commonly use relatively low ultrasonic frequencies (for example, tens of kilohertz, typically around 58 kHz).\n<strong>Reasons for using lower frequency in this scenario<\/strong><br>\n<ul><li>Enables obstacle detection over several metres in front of the vehicle<\/li>\n<li>Provides a suitable beam width to cover the travel path<\/li>\n<li>Offers robust performance under changing environmental conditions such as temperature, air currents, and dust<\/li><\/ul>\nIn this application, the priority is range and reliability, rather than millimetre level precision, which makes a relatively low ultrasonic frequency the most appropriate choice.\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-28b0329\" id=\"6-from-scenario-to-sensor-how-the-dimensions-combine\" data-block-id=\"28b0329\"><h3 class=\"stk-block-heading__text\">6. From Scenario to Sensor: How the Dimensions Combine<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-6566d52\" data-block-id=\"6566d52\"><style>.stk-6566d52 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">For each application scenario, the appropriate ultrasonic sensor is selected by combining all four dimensions:<\/p><\/div>\n\n\n\n<ul style=\"line-height: 1.8rem;\"><li><strong>1.\tApplication scenario (Dimension 4)<\/strong><br>\n<ul><li>Level measurement (short and medium range)<\/li>\n<li>Proximity switching (short range)<\/li>\n<li>Material \/ energy based detection<\/li>\n<li>Web \/ sheet \/ edge applications<\/li>\n<li>AGV and mobile robot obstacle avoidance<\/li><\/ul><\/li>\n<li><strong>2. Frequency range (Dimension 1)<\/strong><br>\n<ul><li>Higher frequency (approx. 200\u2013400 kHz)<br>\n<ul><li>Short range level measurement (around 0.15\u20131 m)<\/li>\n<li>Ultrasonic proximity switches (around 0.15\u20130.5 m)<\/li>\n<li>Material \/ energy based detection<\/li>\n<li>Many double sheet and edge guiding applications<\/li><\/ul><\/li>\n<li>Medium \/ lower frequency (approx. 60\u2013200 kHz, down to tens of kilohertz)<br>\n<ul><li>Medium range level measurement (up to several metres, e.g. 2\u20136 m)<\/li>\n<li>Long range obstacle detection for AGVs and mobile robots (e.g. around 58 kHz)<\/li><\/ul><\/li><\/ul><\/li>\n<li><strong>3. Output type (Dimension 2)<\/strong><br>\n<ul><li>Switching, analog, or digital interfaces, selected according to control requirements (simple alarm vs. continuous measurement vs. networked integration)<\/li>\n<li>Wherever possible, using a common hardware platform with firmware configurable outputs or dual output variants can simplify stock keeping and make future upgrades easier.<\/li><\/ul><\/li>\n<li><strong>4. Detection mode (Dimension 3)<\/strong><br>\n<ul><li>Diffuse reflection (level, proximity, obstacle detection)<\/li>\n<li>Through beam \/ projective (double sheet, some web applications)<\/li>\n<li>Reflection with material sensing evaluation (energy based material identification)<\/li><\/ul><\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ac8fd3c\" data-block-id=\"ac8fd3c\"><style>.stk-ac8fd3c .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">By starting from the real application scenario and then choosing the frequency range, detection mode, and output type accordingly, suitable ultrasonic sensor configurations can be selected or designed efficiently for a wide range of industrial tasks.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-f8f9333\" id=\"vi-conclusion\" data-block-id=\"f8f9333\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">VI. Conclusion<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0bb152a\" data-block-id=\"0bb152a\"><style>.stk-0bb152a .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">In ultrasonic sensor selection, the key question is not \u201cwhich sensor is the best?\u201d, but \u201cwhich sensor is the best match for this specific application?\u201d<\/p><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Every design involves trade offs: pushing one parameter to the extreme (very high frequency, very long range, ultra compact housing, etc.) inevitably means compromises in other areas. The art of selection is to balance these trade offs across the four dimensions discussed in this document:<br>\n<ul style=\"list-style-type: none;\"><li>1. Operating frequency<\/li>\n<li>2. Output type<\/li>\n<li>3. Detection mode<\/li>\n<li>4. Application scenario<\/li><\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-6b929d3\" id=\"1-there-is-no-best-sensor-only-the-most-suitable-one\" data-block-id=\"6b929d3\"><h3 class=\"stk-block-heading__text\">1. There is no \u201cbest\u201d sensor, only the most suitable one<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Across real industrial applications, a few practical selection rules emerge:<br>\n<ul><li><strong>If you care most about compatibility and easy integration<br>\nFocus on the output dimension:<\/strong><br>\n<ul><li>Check the available outputs and interfaces:<br>\n<ul><li>Switching outputs (NPN \/ PNP)<\/li>\n<li>Analog outputs (4\u201320 mA \/ 0\u201310 V)<\/li>\n<li>Digital \/ bus interfaces (e.g. serial links, fieldbus, industrial Ethernet)<\/li><\/ul><\/li>\n<li>Check whether parameters (ranges, switching points, filters) are configurable, and whether the device supports diagnostics and status monitoring.<\/li><\/ul>\nThese factors determine how easily the sensor can be integrated into existing PLCs, SCADA \/ MES systems, and future upgrades.<\/li>\n<li>If you care most about installation flexibility and mechanical constraints<br>\nFocus on the mechanical design:<br>\n<ul><li>Overall housing shape and size (cylindrical, cubic, flat, compact, side looking, etc.)<\/li>\n<li>Mounting options and connector orientation<\/li>\n<li>Availability of angle adjustable or 90\u00b0 side looking versions to cope with tight spaces or non standard mounting positions<\/li><\/ul>\nGood mechanical fit often decides whether a sensor can be used at all in a given machine layout.<\/li>\n<li>If you care most about measurement performance and process demands<br>\nFocus on frequency selection and detection mode:<br>\n<ul><li>Use higher frequencies (typically around 200\u2013300 kHz and above) when you need: <br>\n<ul><li>Short range, high resolution distance or level measurement<\/li>\n<li>Very small blind zones<\/li>\n<li>Tight, well defined sensing fields<\/li><\/ul><\/li>\n<li>Choose appropriate detection modes:<br>\n<ul><li>Diffuse reflection for most distance and level tasks<\/li>\n<li>Through beam \/ projective mode for thin sheets, edge guiding, and double sheet detection<\/li>\n<li>Energy based material sensing when distinguishing materials or layer structures is more important than pure distance<\/li><\/ul><\/li><\/ul>\nIn many of these high performance cases, specialized high frequency ultrasonic transducers (for example 200 kHz and 300 kHz types) and through beam configurations become the decisive enablers.<br>\n<strong>In other words:<\/strong><br>\n<ul><li>System integration priority \u2192 focus on outputs and communication interfaces<\/li>\n<li>Mechanical \/ installation priority \u2192 focus on housing form factor and mounting options<\/li>\n<li>Measurement performance priority \u2192 focus on frequency band and detection mode<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-71c32ec\" id=\"2-from-general-rules-to-concrete-solutions\" data-block-id=\"71c32ec\"><h3 class=\"stk-block-heading__text\">2. From general rules to concrete solutions<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">The four dimensions described in this document form a practical framework:<br>\n<ul style=\"list-style-type: none;\"><li>1. Start with the application scenario (level, proximity, web guiding, material detection, AGV obstacle avoidance, etc.).<\/li>\n<li>2. Narrow down the suitable frequency range (short range \/ high frequency vs. long range \/ low frequency).<\/li>\n<li>3. Select the detection mode (diffuse reflection, through beam, or material sensing) that matches the physical task.<\/li>\n<li>4. Finally, choose the output type and mechanical design that best fit the control system and installation conditions. Wherever possible, using a common hardware platform with firmware configurable outputs or dual output variants can further simplify stock keeping and system evolution.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-8a4ade5\" data-block-id=\"8a4ade5\"><style>.stk-8a4ade5 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">Used this way, the framework helps avoid trial and error and makes technical decisions more transparent and easier to explain in project reviews and customer discussions.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-6077275\" id=\"3-when-to-consider-customization\" data-block-id=\"6077275\"><h3 class=\"stk-block-heading__text\">3. When to consider customization<\/h3><\/div>\n\n\n\n<div style=\"line-height: 1.8rem;\">Standard ultrasonic sensors cover a large portion of typical industrial requirements. However, customization can be valuable when:<br>\n<ul><li>The installation space is extremely limited or mechanically complex<\/li>\n<li>The target material or environment falls outside common specifications<\/li>\n<li>The application requires a non standard frequency, beam pattern, or signal evaluation method<\/li>\n<li>Multiple functions (distance, material classification, diagnostics) need to be combined in a single device<\/li><\/ul>\nIn such cases, working directly with the original manufacturer or a specialized development partner can enable:<br>\n<ul><li>Tailored operating frequency and acoustic design for the exact range and target<\/li>\n<li>Optimized housing and mounting concepts for specific machines<\/li>\n<li>Adjusted firmware, output formats, and communication protocols to match existing control architectures<\/li><\/ul>\nEarly technical consultation in these scenarios can significantly reduce development risk and time to deployment.\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-eb1bbb1\" data-block-id=\"eb1bbb1\"><style>.stk-eb1bbb1 .stk-block-text__text{line-height:1.5em !important;font-weight:400 !important;text-transform:none !important;font-style:normal !important;font-family:\"Source Sans 3\", Sans-serif !important;}<\/style><p class=\"stk-block-text__text\">By systematically using the four dimensions\u2014frequency, output type, detection mode, and application scenario\u2014engineering teams can move from ad hoc sensor choices to clear, justified, and application driven selection of ultrasonic sensors in industrial projects.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-448ff23\" id=\"related-products\" data-block-id=\"448ff23\"><style>.stk-448ff23 .stk-block-heading__text{font-weight:600 !important;}<\/style><h2 class=\"stk-block-heading__text\">Prodotti correlati<\/h2><\/div>\n\n\n\n<div data-wp-context=\"{&quot;notices&quot;:[],&quot;hideNextPreviousButtons&quot;:false,&quot;isDisabledPrevious&quot;:true,&quot;isDisabledNext&quot;:false,&quot;ariaLabelPrevious&quot;:&quot;Prodotti precedenti&quot;,&quot;ariaLabelNext&quot;:&quot;Prodotti successivi&quot;,&quot;collection&quot;:&quot;woocommerce\\\/product-collection\\\/hand-picked&quot;}\" data-wp-init=\"callbacks.onRender\" data-wp-interactive=\"woocommerce\/product-collection\" data-wp-router-region=\"wc-product-collection-0\" data-__private-preview-state=\"{&quot;isPreview&quot;:false,&quot;previewMessage&quot;:&quot;Actual products will vary depending on the page being viewed.&quot;}\" data-block-name=\"woocommerce\/product-collection\" data-collection=\"woocommerce\/product-collection\/hand-picked\" data-dimensions=\"{&quot;widthType&quot;:&quot;fill&quot;}\" data-display-layout=\"{&quot;type&quot;:&quot;flex&quot;,&quot;columns&quot;:5,&quot;shrinkColumns&quot;:true}\" data-hide-controls=\"[&quot;inherit&quot;,&quot;hand-picked&quot;,&quot;filterable&quot;,&quot;order&quot;]\" data-query-context-includes=\"[&quot;collection&quot;]\" data-query-id=\"0\" data-query=\"{&quot;perPage&quot;:9,&quot;pages&quot;:0,&quot;offset&quot;:0,&quot;postType&quot;:&quot;product&quot;,&quot;order&quot;:&quot;asc&quot;,&quot;orderBy&quot;:&quot;post__in&quot;,&quot;search&quot;:&quot;&quot;,&quot;exclude&quot;:[],&quot;inherit&quot;:false,&quot;taxQuery&quot;:[],&quot;isProductCollectionBlock&quot;:true,&quot;featured&quot;:false,&quot;woocommerceOnSale&quot;:false,&quot;woocommerceStockStatus&quot;:[&quot;instock&quot;,&quot;outofstock&quot;,&quot;onbackorder&quot;],&quot;woocommerceAttributes&quot;:[],&quot;woocommerceHandPickedProducts&quot;:[&quot;6637&quot;,&quot;6287&quot;,&quot;4802&quot;,&quot;4849&quot;,&quot;4854&quot;,&quot;6261&quot;,&quot;6276&quot;,&quot;6262&quot;],&quot;filterable&quot;:false,&quot;relatedBy&quot;:{&quot;categories&quot;:true,&quot;tags&quot;:true}}\" data-tag-name=\"div\" class=\"wp-block-woocommerce-product-collection is-layout-flow wp-block-woocommerce-product-collection-is-layout-flow\">\t\t<div data-wp-interactive=\"woocommerce\/store-notices\" class=\"wc-block-components-notices alignwide\">\n\t\t\t<template data-wp-each--notice=\"state.notices\" data-wp-each-key=\"context.notice.id\">\n\t\t\t\t<div\n\t\t\t\t\tclass=\"wc-block-components-notice-banner\"\n\t\t\t\t\tdata-wp-init=\"callbacks.scrollIntoView\"\n\t\t\t\t\tdata-wp-class--is-error=\"state.isError\"\n\t\t\t\t\tdata-wp-class--is-success=\"state.isSuccess\"\n\t\t\t\t\tdata-wp-class--is-info=\"state.isInfo\"\n\t\t\t\t\tdata-wp-class--is-dismissible=\"context.notice.dismissible\"\n\t\t\t\t\tdata-wp-bind--role=\"state.role\"\n\t\t\t\t\tdata-wp-watch=\"callbacks.injectIcon\"\n\t\t\t\t>\n\t\t\t\t\t<div class=\"wc-block-components-notice-banner__content\">\n\t\t\t\t\t\t<span data-wp-init=\"callbacks.renderNoticeContent\" aria-live=\"assertive\" aria-atomic=\"true\"><\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<button\n\t\t\t\t\t\tdata-wp-bind--hidden=\"!context.notice.dismissible\"\n\t\t\t\t\t\tclass=\"wc-block-components-button wp-element-button wc-block-components-notice-banner__dismiss contained\"\n\t\t\t\t\t\taria-label=\"Ignora questo avviso\"\n\t\t\t\t\t\tdata-wp-on--click=\"actions.removeNotice\" data-no-translation-aria-label=\"\"\n\t\t\t\t\t>\n\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\">\n\t\t\t\t\t\t\t<path d=\"M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z\" \/>\n\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/template>\n\t\t<\/div>\n\t\t<ul data-block-name=\"woocommerce\/product-template\" class=\"wc-block-product-template__responsive columns-5 wc-block-product-template wp-block-woocommerce-product-template is-layout-flow wp-block-woocommerce-product-template-is-layout-flow\" data-wp-on--scroll=\"actions.watchScroll\" data-wp-init=\"callbacks.initResizeObserver\"><li class=\"wc-block-product post-6637 product type-product status-publish has-post-thumbnail product_cat-ultrasonic-distance-sensors product_cat-ultrasonic-sensors first instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":6637}'\n\t\t\t\tdata-wp-key=\"product-item-6637\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/issr-4m-all-in-one-ultrasonic-level-distance-sensor-switch-analog-digital-output\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/4M-fully-integrated-ultrasonic-material-ranging-liquid-level-distance-sensor-ISUB4000-30GM85-01-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sensore di distanza a ultrasuoni completamente integrato di livello del liquido 4M-ISUB4000-30GM85-01\" data-testid=\"product-image\" data-image-id=\"6646\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/4M-fully-integrated-ultrasonic-material-ranging-liquid-level-distance-sensor-ISUB4000-30GM85-01-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/4M-fully-integrated-ultrasonic-material-ranging-liquid-level-distance-sensor-ISUB4000-30GM85-01-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/4M-fully-integrated-ultrasonic-material-ranging-liquid-level-distance-sensor-ISUB4000-30GM85-01-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/4M-fully-integrated-ultrasonic-material-ranging-liquid-level-distance-sensor-ISUB4000-30GM85-01-100x100.png 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.2; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/issr-4m-all-in-one-ultrasonic-level-distance-sensor-switch-analog-digital-output\/\" target=\"_self\" >ISSR 4M Sensore di distanza a ultrasuoni tutto in uno Interruttore di livello\/uscita analogica\/digitale<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-6287 product type-product status-publish has-post-thumbnail product_cat-ultrasonic-distance-sensors product_cat-ultrasonic-sensors  instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":6287}'\n\t\t\t\tdata-wp-key=\"product-item-6287\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/agv-obstacle-avoidance-sensor-1m-dual-angle\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-17GKW29-01-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sensore a ultrasuoni AGV per evitare gli ostacoli-ISUB1000-17GKW29-01\" data-testid=\"product-image\" data-image-id=\"6282\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-17GKW29-01-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-17GKW29-01-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-17GKW29-01-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-17GKW29-01-100x100.png 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.2; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/agv-obstacle-avoidance-sensor-1m-dual-angle\/\" target=\"_self\" >1M 58kHz Ultrasonic AGV Obstacle Avoidance Sensor<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-4802 product type-product status-publish has-post-thumbnail product_cat-high-frequency-ultrasonic-transducer product_cat-ultrasonic-transducers  instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":4802}'\n\t\t\t\tdata-wp-key=\"product-item-4802\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-wind-speed-direction-transducer-isu200-12trbj-t1\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"ISU200-12TRBJ-T1-Trasduttore anemometrico a ultrasuoni-1\" data-testid=\"product-image\" data-image-id=\"4803\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-1024x1024.png 1024w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-768x768.png 768w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-1536x1536.png 1536w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-2048x2048.png 2048w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-800x800.png 800w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISU200-12TRBJ-T1-Ultrasonic-anemometer-transducer-1-100x100.png 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.2; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-wind-speed-direction-transducer-isu200-12trbj-t1\/\" target=\"_self\" >ISSR 200kHz Sonda a ultrasuoni del trasduttore di rilevamento della direzione della velocit\u00e0 del vento<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-4849 product type-product status-publish has-post-thumbnail product_cat-ultrasonic-energy-sensors product_cat-ultrasonic-sensors last instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":4849}'\n\t\t\t\tdata-wp-key=\"product-item-4849\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-double-sheet-sensor-detection-m12\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"ISUDB40-12GM75-M12 Sensore di rilevamento doppio foglio a ultrasuoni-1\" data-testid=\"product-image\" data-image-id=\"4850\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-768x768.png 768w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-100x100.png 100w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1.png 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.2; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-double-sheet-sensor-detection-m12\/\" target=\"_self\" >ISSR M12 Sensore a ultrasuoni per il rilevamento di fogli doppi<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-4854 product type-product status-publish has-post-thumbnail product_cat-ultrasonic-proximity-switches product_cat-ultrasonic-sensors first instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":4854}'\n\t\t\t\tdata-wp-key=\"product-item-4854\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/miniature-ultrasonic-proximity-switch-isub250-f77k12\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"ISUB250-F77K12-Interruttori di prossimit\u00e0 a ultrasuoni-1\" data-testid=\"product-image\" data-image-id=\"4860\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-1024x1024.png 1024w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-768x768.png 768w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-1536x1536.png 1536w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-2048x2048.png 2048w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-800x800.png 800w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUB250-F77K12-Ultrasonic-proximity-switches-1-100x100.png 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.2; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/miniature-ultrasonic-proximity-switch-isub250-f77k12\/\" target=\"_self\" >Interruttore di prossimit\u00e0 a ultrasuoni ISSR F77<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-6261 product type-product status-publish has-post-thumbnail product_cat-ultrasonic-distance-sensors product_cat-ultrasonic-sensors  instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":6261}'\n\t\t\t\tdata-wp-key=\"product-item-6261\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/high-precision-short-range-ultrasonic-sensor-isub500-18gm40\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB500-18GM40-01-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"ISUB500-18GM40 Sensore a ultrasuoni a corto raggio per la misurazione della distanza-01\" data-testid=\"product-image\" data-image-id=\"6257\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB500-18GM40-01-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB500-18GM40-01-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB500-18GM40-01-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB500-18GM40-01-100x100.png 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.2; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/high-precision-short-range-ultrasonic-sensor-isub500-18gm40\/\" target=\"_self\" >Sensore di distanza a ultrasuoni a corto raggio di alta precisione ISSR 500 mm\uff5c200kHz<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-6276 product type-product status-publish has-post-thumbnail product_cat-ultrasonic-energy-sensors product_cat-ultrasonic-sensors  instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":6276}'\n\t\t\t\tdata-wp-key=\"product-item-6276\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-material-sensor-300khz-robotic-vacuum\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB30-16GK12-01-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"ISUB30-16GK12-01\" data-testid=\"product-image\" data-image-id=\"6272\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB30-16GK12-01-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB30-16GK12-01-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB30-16GK12-01-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB30-16GK12-01-100x100.png 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.2; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-material-sensor-300khz-robotic-vacuum\/\" target=\"_self\" >ISSR 300kHz Sensore di prova dei materiali a ultrasuoni per aspirapolvere robotici<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-6262 product type-product status-publish has-post-thumbnail product_cat-ultrasonic-distance-sensors product_cat-ultrasonic-sensors last instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":6262}'\n\t\t\t\tdata-wp-key=\"product-item-6262\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-distance-sensor-right-angle-ip67-isub1000-18gm75a-vc\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-18GM75A-VC-01-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"ISUB1000-18GM75A-VC-01\" data-testid=\"product-image\" data-image-id=\"6263\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-18GM75A-VC-01-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-18GM75A-VC-01-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-18GM75A-VC-01-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/11\/ISUB1000-18GM75A-VC-01-100x100.png 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.2; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-distance-sensor-right-angle-ip67-isub1000-18gm75a-vc\/\" target=\"_self\" >ISSR 1M 200kHz Sensore di distanza a ultrasuoni completamente integrato con curva a 90 gradi ad angolo retto<\/a><\/h2>\n\n\t\t\t\t<\/li><\/ul><\/div>\n\n\n<div data-block=\"hook:7173\" class=\"alignfull\"><article id=\"post-7173\" class=\"post-7173\"><div class=\"entry-content is-layout-constrained\">\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-7cd03f1 stk-block-background\" data-block-id=\"7cd03f1\"><style>.stk-7cd03f1 {background-color:#dedede1a !important;border-top-left-radius:0px 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Introduction Ultrasonic Sensors are widely used in industrial automation for distance measurement, level detection, material recognition, and obstacle avoidance. Although they all rely on the same fundamental principle\u2014using high frequency sound waves to detect objects\u2014their designs vary greatly depending on application requirements. From a selection point of view, the challenge is not simply: \u201cWhich [&hellip;]<\/p>","protected":false},"author":2,"featured_media":6443,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[],"class_list":["post-6288","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v26.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Comprehensive Guide to Ultrasonic Sensors and Transducers<\/title>\n<meta name=\"description\" content=\"Explore our expert guide on ultrasonic sensors and transducers, covering types, applications, and selection tips to meet your specific needs.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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