Vacuum switch principle and application

- Aug 04, 2019-

The vacuum switch is the pressure in the automatic measurement and control system. Using the principle of the pressure sensor, the built-in high-precision sensor design prevents the pressure in the system from being too high or too low, and outputs the switching signal to ensure the precise and stable operation of the device under unattended operation. Controller. The vacuum switch is an automatic pressure protection controller for vacuum systems. When the vacuum pressure in the system is greater than the set point, the controller will automatically cut off the circuit and send a signal to ensure the normal operation of the system. The negative pressure pressure switch, also known as the vacuum switch, is an intelligent instrument that integrates negative pressure measurement, display and control. It has the characteristics of simple operation, convenient installation, high precision and strong function. The pressure switch has the functions of reverse control, delay control, leakage pressure protection, password protection, one-key error clearing, multiple pressure switching, etc. It can be used for various vacuum measurement and can be used with various vacuum pumps.



The vacuum switch is an automatic pressure protection controller for vacuum systems. When the vacuum pressure in the system is greater than the set point, the controller will automatically cut off the circuit and send a signal to ensure the normal operation of the system. When the pressure in the system is higher or lower than the safety pressure, the pressure sensor in the controller acts immediately, causing the contacts in the controller to be turned on or off, and the device stops working; when the pressure in the system returns When the safety pressure range of the device is reached, the pressure sensor in the controller is immediately reset, so that the contacts in the controller are turned on or off, and the device works normally.


The mechanical vacuum switch is a pure mechanical deformation that causes the microswitch to operate. When the pressure increases, the vacuum switch acts on different sensing pressure components (diaphragm, bellows, piston) to deform, will move upwards, through the mechanical structure of the railing spring, etc., finally start the uppermost micro switch to make the electrical signal Output. The mechanical pressure switch setting mode is continuous displacement type from the functional principle. The set point can be set at a single point and can reach up to 3 different set points.