Description:
The 18GM40 is a compact ultrasonic sensor series with three range options (0.15 m, 0.35 m, 0.5 m) and excellent measurement fidelity—0.17 mm resolution, ±0.15 % accuracy, and built-in thermal drift compensation.
It provides rapid 50‑ms readings, selectable analog or switching outputs, and strong protections (IP67, overvoltage, reverse‑polarity). Its rugged nickel‑plated brass housing and flexible configurations make it a versatile choice for robotics protection, fluid‑level sensing, warehouse automation, and object detection tasks.
Specifications:
- Model: 18GM40 Series（150/350/500mm）
- Detection Range: 20-150mm, 30-350mm, 40-500mm
- Blind Spot: 0-20mm, 0-30mm, 0-40mm
- Resolution: 0.17mm
- Repeatability: ±0.15% of Full-Scale Value
- Absolute Accuracy: ±1% ( Built-in Temperature Drift Compensation )
- Response Time: 50ms
- Switching Hysteresis: 2mm
- Switching Frequency: 20Hz
- Power-on Delay: <500ms
- Operating Voltage: 15-30VDC
- LED Red Light: Steady on, no target detected Flashing: No target detected in the learning state
- LED yellow light: Always on, the target is detected within the range A1-A2 Flashing: Target detected in learning state
- Protection Circuit: Anti-Reverse Connection Protection, Instantaneous Overvoltage Protection
- Load Impedance: U/>1k Ohm
- No-load Current: ≤25mA
- Input Type: With Learning Function
- Material: Nickel Plated Copper Sleeve, Plastic Fittings, Glass Filled Epoxy
- Protection Level: IP67
- Connection Type: 4 -Pin M12 Connector
- Ambient Temperature: -25℃~+70℃(248~343K)
- Storage Temperature: -40℃~+85℃(233~358K)
- Output Can be Customized E4/E8: 1 Switch Output npn, NO/NC/ Hysteresis Mode
- E5/E9: 1 Switch Output npn, NO/NC/ Hysteresis Mode
- I: 1 Analog Current Output, 4-20mA
- U5/U10: 1 Analog Voltage Output, 0-5V/0-10V
Feature:
- Compact size, reliable protection.
- Support self-learning and quick installation.
- Not affected by harsh environments such as dust and water mist.
- Cost-effective.
Useful Link:
Package Included:
1 x 18GM40 Series 350mm Ultrasonic Proximity Sensor