Pro-Range CCJ-A12M-3APB Capacitive Proximity Sensor - PNP M12 Thread, 3mm Detection

This capacitive proximity sensor is designed to detect non-metallic objects, including plastics, glass, liquids, wood, paper, and granular materials like powders or pellets. It cannot reliably detect metals; for metallic targets, an inductive proximity sensor is required.

Connect the brown wire to your DC power supply positive (10-30V), the blue wire to the supply negative (0V/GND). The black wire is the PNP output. Connect the black wire to your PLC digital input, and connect a pull-down resistor (typically 2-10kΩ) from the input to GND. The output will switch to supply voltage (sourcing) when an object is detected.

Yes, the sensor features a sensitivity adjustment potentiometer, typically located on the back or side of the housing. To calibrate, power the sensor and place the target object at the desired detection distance. Slowly turn the adjustment screw until the output LED just triggers, then slightly increase the sensitivity to ensure reliable detection, avoiding over-sensitivity to background objects.

The sensor has a typical response frequency of up to 100 Hz, corresponding to a response time of approximately 10 milliseconds. This makes it suitable for high-speed counting and positioning applications on fast-moving production lines.

Yes, it is commonly used for non-contact liquid level detection. Mount the sensor externally on the outside wall of a non-metallic tank (plastic or glass). Ensure the tank wall thickness is less than the 3mm sensing distance. The sensor will detect the presence or absence of liquid based on the dielectric constant change.