XKC-Y25 PNP Intelligent Non-Contact Water Level Sensor - 50cm Cable

Connect the Brown wire to your positive DC supply voltage (5-12V). Connect the Blue wire to system ground (GND). The Yellow wire is the PNP output signal; connect it to your PLC input or microcontroller digital pin. The Black wire is not connected (NC). The sensor's output switches to a high state (near VCC) when liquid is detected.

Yes, the XKC-Y25 can detect various conductive and non-conductive liquids, including oils, chemicals, and fuels, due to its capacitive sensing principle. The adjustable sensitivity potentiometer allows you to fine-tune the detection threshold for different liquid dielectric constants and container wall materials to ensure reliable operation.

Locate the small potentiometer on the sensor body. Use a small screwdriver to turn it. Clockwise rotation typically increases sensitivity (detects liquid from a slightly greater distance or through thicker walls), while counter-clockwise rotation decreases it. Adjust while testing with your specific setup until the status LED triggers reliably at the desired liquid level.

While the exact specification isn't provided by the Generic manufacturer, typical sensors of this type have a PNP open-collector output capable of sinking up to 100mA. This is sufficient to drive a PLC input, an optocoupler, or a small relay directly. For higher current loads, always interface through an external relay or transistor.

Yes, because it is a non-contact sensor. The sensing face does not need to be in direct contact with the liquid. It can detect the liquid level through the wall of a plastic or glass tank. This makes it ideal for monitoring corrosive or sterile liquids, as the sensor remains isolated and protected from the harsh medium.