Function of electric contact pressure gauge
Function of electric contact pressure gauge:The utility model is used for measuring the positive and negative pressure of the gas and liquid medium which does not corrode copper and copper alloy, and sends out signals when the pressure reaches a predetermined value, and the control circuit is switched on to achieve the purpose of automatic control of the alarm.Electrical contact signal pin in electric contact pressure gauge device, a permanent magnet can be adjusted, can increase the contact force, speed up the contact action, so that the contact reliability, eliminating the arc, can effectively avoid the instrument working environment due to frequent vibration or medium pressure pulsation caused by contact off. Therefore, the electric contact pressure gauge has the advantages of reliable operation, long service life and large power of the contact switch.
The instrument comprises a measuring system, an indicating system, an outer shell, a magnetic auxiliary electric contact device, an upper and lower adjusting device and a junction box. When the measured medium pressure through the guide part into the measuring element, in which the pressure produces the corresponding displacement measuring element free end through the connecting rod drives the gear transmission mechanism, resulting in the dial on indication of the measured medium pressure value. At the same time, the instrument pointer drives the upper and lower limit movable arm and the set pointer (upper and lower limit) contacts to be disconnected or closed, so that the control circuit can be switched off so as to achieve the purpose of automatic control or sending letters to alarm.In general, the instrument can be used for automatic control or transmitting alarm by measuring and controlling the pressure system of the medium (or relay), which is used in conjunction with the corresponding electrical appliances (such as relays, contactors, etc.).
The upper and lower pressure can be set, the upper limit is reached, the power failure is stopped, the lower limit is lowered, the self starting voltage is raised, and the inner pressure is kept automatically in this range.
