Pro-Range CRJ-A12M-3ANB Capacitive Proximity Sensor NPN M12 Thread 3mm Detection

The sensor typically operates on a 10-30V DC supply voltage, which is standard for industrial NPN proximity sensors. Always verify the specific wiring against the sensor's datasheet to ensure compatibility with your PLC or controller's input module.

While capacitive sensors are primarily designed for non-metallic materials like plastics, liquids, and powders, they can detect metallic objects. However, the detection distance may vary, and inductive sensors are generally more suitable and reliable for dedicated metal detection applications.

The sensor includes a built-in sensitivity adjustment potentiometer. Use a small screwdriver to turn the potentiometer while observing the red LED indicator; adjust until the sensor reliably detects the target material at the desired distance without false triggering from background objects.

The NPN output is an open-collector configuration. The brown wire is typically connected to the positive supply (10-30V DC), the blue wire to ground (0V), and the black wire is the switched output. The black wire sinks current to ground when an object is detected.