Working principle of flameproof pressure gauge

The working principle of the flameproof pressure gauge is to transmit the pressure deformation to the pointer through the elastic deformation of the sensitive elements (Bourdon tube, diaphragm box, bellows) in the gauge, and then the conversion mechanism of the movement in the gauge transmits the pressure deformation to the pointer, causing the pointer to rotate to display the pressure.

The flameproof shell of the explosion-proof pressure gauge has good explosion-proof performance. In the normal working process, due to the influence of sparks or arcs, in addition to being able to withstand the flameproof pressure generated by the explosive gas mixture inside the shell once an explosion occurs, it can also effectively prevent the heat energy generated thereby from spreading smoothly outward, and can only slowly spread outward along the tiny gap of the explosion-proof joint surface inside the shell. At this time, the instantaneous temperature transmitted to the outside of the shell has dropped below the ignition temperature of the explosive gas mixture, so it will not cause explosion transmission.

The flameproof pressure gauge is suitable for use in flammable and explosive occasions. It is different from ordinary pressure gauges. The requirements for flameproof pressure gauges are higher. First of all, the safety factor is high or not. There are many types of flameproof pressure gauges. How to choose a pressure gauge that suits you requires comprehensive consideration. Flameproof pressure gauges are classified by explosion-proof coefficient: intrinsically safe explosion-proof pressure gauges and flameproof pressure gauges. Safety performance: electric contact flameproof pressure gauges, pointer flameproof pressure gauges, and digital display flameproof pressure gauges.