Liquid Level Sensor | Non-Contact Induction Switch

This XKC-Y25 sensor detects liquid levels from outside a container. It doesn't touch the liquid. It acts as a liquid level switch. It sends a signal when water reaches its position. It works through non-metallic walls up to 20mm thick. This includes plastic, glass, or ceramic. Features and Benefits - Detects through 20mm walls - It works well on many common water tanks and containers. No changes to the tank are needed. - High/low level output - You can use it to trigger a pump, valve, or alarm. This happens when the liquid rises or falls to a set point. - NPN and PNP models available - Choose the output logic that fits your system. It works with Arduino and industrial PLCs. - IP67 waterproof housing - The electronics are fully sealed. This protects them from dust and moisture in tough places. Applications - Industrial liquid handling - Monitor levels in non-metallic pipes and vats. This helps with process control. - Sump pump control - Activate a pump. This happens when water in a sump pit reaches a certain level. - Smart home projects - Connect it with an Arduino. Get notifications about water levels in rain barrels or reservoirs. Mechanical Ball / Rolling-Element Switches (Simple On/Off) These are fundamental tilt switches, operating on a simple principle. Inside a sealed casing, a conductive ball or mercury droplet moves freely. When the sensor tilts beyond a certain angle, the ball rolls and makes contact between two electrical terminals, completing a circuit. This action triggers an electrical switch, indicating a tilt event as a simple on/off signal. While not suitable for precise angle measurement, they are robust for basic tilt detection, such as alerting to an object being knocked over. The Y25-V model, however, uses a non-contact induction method rather than a mechanical ball for detection. MEMS Accelerometers (Precise Angle Measurement) MEMS (Micro-Electro-Mechanical Systems) accelerometers are sophisticated gravity sensors that detect changes in acceleration along one or more axes. This acceleration data can then be processed to determine the precise angle of tilt. Unlike simple tilt switches, MEMS accelerometers provide continuous analogue or digital output, allowing for detailed measurement of inclination rather than just an on/off state. They are highly sensitive and compact, often found in devices requiring accurate orientation sensing. The Y25-V model is a digital output sensor, but its primary function is liquid level detection via capacitance, not precise tilt angle measurement. Optical Tilt Sensors Optical tilt sensors utilise light to detect changes in orientation. This can involve an emitter and receiver pair where a tilting object interrupts or redirects a light beam, or more complex systems that measure the reflection of light from a surface. When the sensor tilts, the path of the light changes, and this alteration is detected to determine the degree or presence of tilt. They offer non-contact detection and can be very precise. The Y25-V model, while non-contact, uses induction (capacitance theory) for fluid level sensing, not optical principles for tilt detection. Quick Comparison Understanding how a tilt sensor works is key to selecting the right tool. Simple mechanical switches offer basic on/off tilt detection. MEMS accelerometers provide precise angle measurements, acting as a sophisticated gravity sensor. Optical sensors offer non-contact tilt detection using light. The Y25-V model is specifically designed as a non-contact liquid level sensor, utilising capacitance theory. It operates on 5-24V DC and provides a digital output, indicating fluid presence or absence rather than a physical tilt. It does not incorporate tilt detection capabilities. The Gravity Sensor A gravity sensor, often synonymous with an accelerometer, detects the force of gravity (1g) acting upon it. When an object containing a gravity sensor tilts, the direction of this force relative to the sensor changes. By measuring these changes in acceleration along different axes, the sensor can determine its orientation or tilt angle. This is how many devices detect tilt and shake. While the term "gravity sensor" broadly applies to anything measuring gravitational force or its effects, the Y25-V model is specifically a liquid level sensor, not designed for detecting physical tilt or shake, but rather for non-contact fluid level detection.