ISUB500-18GM40
0.5m 200kHz High-Precision Ultrasonic Distance Sensor for Roll Diameter Control
200kHz Ultrasonic Frequency, Short Blind Zone, High Precision Distance Measurement, M18 Short Housing, IP67 Waterproof, Analog 4-20mA Output, Web Tension Control, Liquid Level Sensor, Non Contact Measurement, Industrial Automation

The ISUB500-18GM40 Series is a high-performance, short-range high-precision ultrasonic distance sensor designed for reliable detection in industrial automation. Operating at a high frequency of 200kHz, this sensor delivers superior resolution and stability compared to standard low-frequency models. Its compact M18 short-housing design makes it the ideal solution for space-constrained applications where reliability cannot be compromised.
Unlike optical sensors, our ultrasonic technology is unaffected by target color, transparency, or surface texture. Whether you are monitoring the liquid level of chemicals, detecting clear glass, or controlling roll diameters in web processing, the ISUB500 functions as a highly reliable ultrasonic displacement sensor, providing consistent, non-contact measurement data.
Key Features & Technical Advantages
- High-Frequency Precision (200kHz): Significantly reduces noise interference and improves detection accuracy for small or fast-moving objects within the 0.5m range.
- Minimized Blind Zone: Ultra-small blind zone of just 0...40mm allows detection very close to the sensor face, maximizing usable range in tight machinery.
- Robust M18 Short Housing: Nickel-plated brass housing offers industrial-grade durability while maintaining a compact footprint, perfect for retrofitting into existing production lines.
- Advanced Output Options: Available in Analog (4-20mA / 0-10V) for continuous measurement or Switching (NPN/PNP) for presence detection.
- Intelligent Teach-In Function: Easily set sensing window limits (A1 and A2 points) via the teach-in wire for custom detection ranges.
- Industrial Protection: Rated IP67, fully sealed unit resists dust, oil, and water ingress for longevity in harsh factory environments.
Ideal Applications
This high-precision sensor is engineered for versatility across various sectors:
- Web Tension Control: Accurately monitors changes in winding/unwinding processes; ideal roll diameter sensor for film, paper, and foil, ensuring constant tension without surface interference.
- Liquid Level Monitoring: Provides non-contact level measurement in small tanks or vials, immune to liquid color or foam.
- Robotics & AGV: Close-range collision avoidance sensor for robotic arms and Automated Guided Vehicles (AGVs) with fast response time (<50ms).
- Material Handling: Reliable counting and positioning of objects on conveyor belts, regardless of material finish (e.g., shiny metal or transparent plastic).










