XKC-Y26 PNP Intelligent Non-Contact Liquid Level Sensor 50CM Cable

The XKC-Y26 PNP sensor can detect liquid levels through non-metallic container walls up to 50mm thick. It uses capacitive sensing technology that measures dielectric changes through materials like plastic, glass, or ceramic. The sensor must be mounted directly against the outer surface of the container for optimal performance.

Connect the sensor's brown wire to 5-24V DC positive, blue wire to ground, and black wire (PNP output) to your controller's digital input pin. For Arduino, use a pull-down resistor (10kΩ) between the black wire and ground. The output switches to high (supply voltage) when liquid is detected, compatible with 3.3V and 5V logic systems.

Yes, the non-contact capacitive design makes it insensitive to liquid properties like conductivity, viscosity, or color. It reliably detects water, oils, fuels, acids, alkalis, and various chemicals as long as they're contained within non-metallic vessels. The sensor is particularly suitable for toxic or corrosive liquids where direct contact must be avoided.

The sensor has a 500ms response time, meaning it takes up to half a second to detect a level change. This is suitable for most tank monitoring, pump control, and irrigation applications where rapid cycling isn't required. For faster processes, consider the sensor's 500ms latency when designing control logic to prevent false triggers from transient level fluctuations.