What Is Float Level Switch?

- Jul 03, 2019-

The float switch is a very critical device for controlling the liquid level of the storage tank, and is divided into a single-stage float switch and a two-stage float switch. The function of the float switch is: when the liquid level is lowered, the float sinks and the contact inside the switch is closed. This contact can be used to control the metering pump, such as stopping the metering pump 1 and starting the metering pump 2, and can also be used to turn on the alarm/ The indicator light indicates that the reservoir is empty. Through the reverse action of the float, the float switch can be applied to the collection tank, indicating that the collection tank is full while stopping the metering pump. 


What is the difference between a single-stage float switch and a two-stage float switch: When the switch is actuated, the single-stage float switch stops the metering pump directly. For a two-stage float switch, the first stage can be activated to indicate a low level in the reservoir. When the second stage switch is activated, the metering pump is stopped.