Pro-Range CLJ-A8-2ANB NPN Inductive Proximity Sensor, 2mm Detection, M8 Thread

The sensor uses a standard 3-wire configuration: connect the brown wire to the positive DC supply voltage (6-36V DC), the blue wire to the power supply ground (0V), and the black wire is the NPN signal output. When a metal target is detected, the black output wire switches to ground (sinks current). Always connect a pull-up resistor (typically 1-10kΩ) between the black wire and your positive logic voltage (e.g., 5V or 24V) to read the signal properly with a PLC or microcontroller.

No, inductive proximity sensors like the CLJ-A8-2ANB are specifically designed to detect conductive metals only. They operate by generating an electromagnetic field and sensing the eddy currents induced in a metal target. Non-conductive materials such as plastic, wood, glass, or liquids will not affect the field and therefore will not be detected. For non-metal detection, consider a capacitive proximity sensor.

The rated standard sensing distance is 2mm, defined for a standard target of mild steel (Fe360). The effective distance can vary slightly depending on the target's material, size, and shape. For example, aluminum or copper may reduce the sensing distance by approximately 30-40%, while stainless steel may also cause a reduction. For precise positioning, it is recommended to test with your specific target material and adjust the mounting distance accordingly.

Mount the sensor by inserting its threaded barrel through a pre-drilled 8mm hole in your mounting panel or bracket. Secure it from the back using the supplied M8 locknut. Ensure the sensing face is flush with or slightly recessed behind any surrounding metal surfaces to avoid interference. The sensor should be mounted so that the target approaches the sensing face perpendicularly for maximum range and accuracy.

While the exact frequency is model-dependent, typical NPN inductive sensors of this type offer switching frequencies in the range of 100 Hz to 1 kHz, suitable for high-speed counting applications. The standard operating voltage range is 6 to 36V DC. Always ensure your power supply is within this range and can provide sufficient current (typically under 20mA) for reliable operation.