Magnetic assisted electric contact pressure gauges are widely used in industrial sectors such as petroleum, chemical, metallurgical, and power stations, as well as in mechanical and electrical equipment to measure the pressure of various fluid media without explosion hazards. Usually, electric contact pressure gauges can be used in conjunction with corresponding electrical components such as relays and contactors to achieve automatic control and signaling (alarm) of the measured (controlled) pressure system.

Electric contact pressure gauges are suitable for measuring the pressure of various liquids, gases, and other media that are non corrosive, non explosive, and non crystalline to copper alloys. The instrument, when used in conjunction with corresponding electrical components, can achieve dual position automatic control and signaling (alarm) of pre-set or minimum pressure values for the measured pressure system.
The instrument has measurement and control functions, and can set upper and lower limits arbitrarily. Its action is stable and reliable, and it is widely used in industrial enterprises and electromechanical equipment such as petroleum, chemical, power stations, metallurgy, etc.
II productprinciple
The instrument consists of a measuring system, an indicating device, a magnetic assisted contact device, a housing, a regulating device, and a junction box.
When the measured pressure acts on the spring tube, its end undergoes corresponding elastic deformation and displacement, which is amplified by the transmission mechanism and indicated on the dial by the indicator device. At the same time, the pointer drives the movable contact of the electrical contact device to make contact with the contact (upper or lower limit) on the set pointer, causing the control system to turn on or off the circuit, in order to achieve automatic control and send alarm signals.
Adjustable magnetic steel is installed on the electrical contact signal pin of the electrical contact device, which can increase the suction force of the contact, accelerate the contact action, make the contact reliable, eliminate the arc, and effectively avoid frequent disconnection of the instrument due to working environment vibration or medium pressure pulsation. So this instrument has the advantages of reliable operation, long service life, and high contact switch power.
Electrical parameters and control forms of contact devices


III Model representation

4 Electrical Circuit Connection Diagram

Five External dimensions