Pro-Range XKC-Y26NPN Non-Contact Liquid Level Sensor - DC 5-12V NPN Output

This sensor is specifically designed for non-metallic containers such as plastic, glass, ceramic, or PVC. It uses capacitive sensing to detect liquid through the container wall. It will not function correctly on metallic tanks as the metal shields the electric field.

The NPN output is an open-collector transistor. Connect the sensor's V+ to 5-12V DC, GND to ground, and the signal wire (OUT) to your controller's input pin, typically with a pull-up resistor. The output switches to ground (LOW) when liquid is detected and is open (HIGH) when no liquid is present.

Yes, the Pro-Range XKC-Y26NPN is designed to maintain stable detection performance across a wide temperature range, including cold, hot, and boiling liquids. The sensing principle is based on dielectric constant, which is largely unaffected by temperature for most common liquids.

A small potentiometer is located on the sensor board. Use a small screwdriver to adjust it. Turn clockwise to increase sensitivity for thicker container walls or lower dielectric liquids. Turn counter-clockwise to decrease sensitivity to prevent false triggers from thin walls or external interference.

The maximum detectable wall thickness depends on the material's dielectric constant and the adjusted sensitivity. Typically, for common plastics (like PP or PVC) up to 5-10mm thickness is reliable. For best results, test the sensor on your specific container with the liquid present while adjusting the sensitivity potentiometer.