Pressure switch pressure control device is a simple, when measured pressure reaches the rated value, the pressure switch may issue a warning or control signals. Pressure switch works is that when the measured pressure exceeds the rated value, the free end of the elastic element displacement, directly or after comparing push switching element, change the switching element switching State, achieve the purpose of controlling the measured pressure.
Elastic elements used are single coil spring pressure switch tube, diaphragms, bellows and bellows, and so on. Switches magnetic switch, mercury switches, micro switches, and so on. The switch of the pressure switch normally open and normally closed type two kinds. Pressure switch with in empty pressure machine above main is to Regulation empty pressure machine of up stopped state, through regulation storage gas tank within of pressure to let empty pressure machine downtime rest, on machine has maintenance role. in empty pressure machine factory debugging of when, according to customer need regulation to specified pressure, then set a pressure poor. for example, compressor began started, to storage gas tank cheer, to pressure 10kg of when, empty pressure machine downtime or uninstall, dang pressure to 7kg of when empty pressure machine and began started, here has a pressure poor, This process is to let the compressor rest to protect the compressor. Directly by the motor driven compressors, crankshaft rotation, drive the reciprocating motion of the piston to the connecting rod, cylinder volume change caused.