Pipe Level Sensor | 4-11mm Diameter | Non-Contact Capacitive Switch

This XKC-Y26A sensor detects liquid levels without contact. It's made for small pipes with an outside diameter of 4mm to 11mm. The sensor wraps around the tubing. It checks for the presence or absence of fluid. It works as a simple and effective liquid level switch. Features and Benefits - Fits small pipes - The curved sensor housing mounts securely on small, non-metallic tubes from 4mm to 11mm. - Two signal outputs - This XKC-Y26A sensor module gives both high and low level output signals at the same time. This offers more options for your project's logic. - Purely electronic operation - It has no mechanical parts. This means nothing wears out from friction or movement. - Works with microcontrollers - Connect the XKC-Y26A non-contact liquid level sensor to an Arduino or other board easily. This lets you create custom monitoring and control systems. Applications - Detecting fluid flow in the tubing of laboratory or medical equipment. - Adding protection to small water pumps to prevent them from running dry. - Monitoring coolant lines in small-scale machine or electronics cooling setups. Mechanical / Float Sensors Mechanical or float sensors are a common type of water level sensor. They typically consist of a float that moves with the liquid level, actuating a switch, such as a magnetic reed switch. When the liquid level rises or falls, the float triggers the switch, sending a signal. This type of level sensor is often used for simple on/off control, like activating a pump when a tank is full or alerting to low levels. They are generally straightforward to install and operate, making them a popular choice for many basic liquid level detection needs. Ultrasonic Sensors (Non-Contact) Ultrasonic sensors are a non-contact method of liquid level detection. They work by emitting high-frequency sound waves towards the liquid surface. The sensor then measures the time it takes for these sound waves to reflect back, calculating the distance to the liquid and thus the level. This method avoids direct contact with the liquid, making it suitable for corrosive or viscous substances. While the product on this page uses a non-contact method, it is a capacitive switch and not an ultrasonic sensor. Submersible Hydrostatic Pressure Sensors Submersible hydrostatic pressure sensors measure liquid level by detecting the pressure exerted by the column of liquid above them. As the liquid level increases, so does the pressure, which the sensor converts into an electrical signal. These level sensors are submerged directly into the liquid, often hanging from a core cable. They are commonly used in tanks, wells, and reservoirs where continuous level monitoring is required. The product on this page is a non-contact capacitive switch, not a submersible pressure sensor. Capacitive Sensors Capacitive sensors, like the XKC-Y26A, work by detecting changes in capacitance caused by the presence or absence of a liquid. This product is a non-contact capacitive switch, meaning it does not need to be immersed in the liquid. It is designed for pipe diameter ranges of 4-11 mm. The theory behind this level sensor is capacitance, and it provides a digital output. It can detect liquid levels through the wall of a small pipe, making it ideal for applications where direct contact is not feasible. Optical Sensors Optical sensors for liquid level detection operate by using light to sense the presence or absence of a liquid. They typically consist of an LED light source and a phototransistor. When the sensor tip is in air, light is reflected back to the receiver. When the tip is immersed in liquid, the light refracts into the liquid, and less light returns to the receiver, triggering the switch. The product on this page uses a non-contact capacitive theory for level sensing, not an optical method.