PONO 30GM85-3000-I Ultrasonic Distance Sensor, 4~20mA Output, 15~30VDC, M12 Connector, IP67, 180mm~3000mm Range

This is a two-wire loop-powered sensor. Connect the brown wire to your DC power supply positive (15-30VDC) and the blue wire to the positive input of your 4-20mA receiver (PLC, controller). The receiver's negative input is then connected back to the power supply negative, completing the loop. The sensor modulates the current flow in this loop to represent the measured distance.

The self-learning function typically involves placing an object at the desired near and far limits and triggering a teach-in sequence via a dedicated wire or by cycling power under specific conditions. Consult the sensor's datasheet for the exact procedure, as it allows the sensor to automatically calibrate its 4mA (0% or minimum range) and 20mA (100% or maximum range) output points, simplifying integration.

Yes, the IP67 rating signifies it is protected against temporary immersion in water up to 1 meter for 30 minutes and is dust-tight. It is suitable for outdoor use and wet industrial environments, provided the electrical connections (M12 connector) are properly sealed. Avoid directing high-pressure water jets directly at the transducer face.

Absolute accuracy (±1%) refers to the maximum deviation between the sensor's reported distance and the true physical distance under reference conditions. Repeatability (±0.15% FS) is the sensor's ability to consistently return to the same measured value for an identical target position under unchanged conditions. High repeatability ensures stable process control even if a slight absolute offset exists.