Vaccum pressure switch
Vaccum pressure switch
Vacuum switch is an automatic control pressure switch, using the principle of pressure sensors, to prevent the system pressure too high or too low, and to controll and ensure the accurate and stable operation of equipment without supervision by output switch signal, .
Vacuum pressure switch is a kind of automatic pressure protection controller used in vacuum system. When the vacuum pressure in the system is greater than the set point, the controller will automatically cut off the circuit and send out signals to ensure the stable operation of the system.When the pressure in the system is higher or lower than the setted safe pressure, the pressure sensor in the controller acts immediately to make the contact in the controller open or close, then the device stops working; When the pressure in the system returns to the safe pressure range of the device, the pressure sensor in the controller is reset immediately, making the contacts in the controller close or open, and the device is working .
Mechanical vacuum switch is operated by micro-motion switch caused by mechanical deformation. When the pressure increases, the diaphragm, bellows and Piston of the switch will deformand move up, through the mechanical structure such as the balustrade spring, and finally start the micro-switch at the top end, output an electrical signal. The setting mode of mechanical pressure switch is of continuous displacement in function and principle. The setting point can be a single point and up to 3 different setting points.
Vaccum switch is widly used in metallurgy, chemical industry, petroleum, steel, machinery, refrigeration equipment, water pump pressure control, low water level protection pressure control, gas, steam, water, oil and other liquid pressure equipment in power plant, cement, food and ship industries and other industrial equipment shall be equipped with the executing agencies for pressure monitoring, alarm and interlock protection, realization of two-position automatic control.
