The float is a key component in level switches. It uses a floating element that follows the liquid level inside a tank and activates a reed sensor through the magnet inside it. This principle is widely used for level control in tank level indicators. Level probes detect liquid level variations through a magnet-equipped float that moves along a tube. Inside the tube, there is a chain of reed sensors, which provides a signal proportional to the float’s position.
Level sensors detect the presence and quantity of a fluid using various technologies, such as the float principle, electrical conductivity, or capacitive and ultrasonic methods. For example, float level sensors use the position change of a floating element to trigger a signal, while ATEX level sensors are designed for explosive-risk environments.
A level switch is a device used to monitor and control the level of a liquid inside a tank or an industrial system. These instruments enable efficient fluid management in sectors such as HVAC, Oil & Gas, food industry, and industrial automation.