Vacuum Pressure Gauge And Contact Pressure Gauge

The electric contact pressure gauge is widely used in petroleum, chemical industry, metallurgy, power station, machinery and other industrial departments or electromechanical equipment to measure the pressure of various fluid media without explosion danger. The instrument can be used with corresponding electrical devices (such as relays and frequency converters, etc.) to achieve automatic control and signal (alarm) for various gas and liquid media under measured pressure.

Principle
The electric contact pressure gauge is composed of a measuring system, an indication system, a magnetic-assisted electric contact device, a housing, an adjusting device and a junction box (plug holder). The electric contact pressure gauge is used to measure the positive and negative pressure of the gas and liquid medium that does not corrode copper and copper alloys. Stainless steel electric contact pressure gauge is used to measure the positive and negative pressure of the gas and liquid medium that does not corrode stainless steel, and sends a signal when the pressure reaches a predetermined value, connects the control circuit, and achieves the purpose of automatic control alarm.

The electric contact pressure gauge is based on the spring tube in the measuring system under the pressure of the measured medium, forcing the end of the spring tube to produce the corresponding elastic deformation - displacement, with the help of the tie rod through the gear transmission mechanism transmission and amplification, by the fixed gear indicator (together with the contact) will be measured on the dial indicated. At the same time, when it is in contact with the contact on the set pointer (upper or lower limit) (breaking or closing), the circuit in the control system can be disconnected or connected to achieve the purpose of automatic control and alarm.

Category
1、Normal electric contact pressure gauge
It is suitable for measuring the pressure of gas and liquid which has no corrosion effect on copper alloy and iron.

2、Corrosion-proof electric contact pressure gauge
The main load cell and meter housing are designed with stainless steel material, suitable for measuring the pressure of highly corrosive gases and liquids.

3、Corrosion-resistant and shock-resistant electric contact pressure gauge
By filling the body of the meter with oil and using liquid damping to ensure no vibration display, it is suitable for measuring the strong pulsation of the medium and the place with large environmental vibration.

4、Explosion-proof electric contact pressure gauge
Suitable for hazardous environments with explosive mixtures.

Product  Application
The electric contact signal needle of the electric contact pressure gauge device is equipped with an adjustable permanent magnetic steel, which can increase the suction force of the contact and speed up the contact action, so as to make the contact contact reliable, eliminate the arc, and effectively avoid the frequent shutdown of the contact due to the vibration of the working environment or the media pressure fluctuation of the instrument. Therefore, the electric contact pressure gauge has the advantages of reliable action, long service life, and large contact switching power.