The explosion-proof electric contact pressure gauge is composed of an explosion-proof casing, a measuring system, an electric contact group, an adjustment device and an outlet box.
The explosion-proof casing of the explosion-proof electric contact pressure gauge has good explosion-proof performance, so the explosion-proof electric contact pressure gauge can withstand the impact of sparks or arcs during normal operation, in addition to being able to withstand the explosive gas mixture inside the casing once it causes an explosion. The resulting explosion pressure can effectively prevent the heat energy generated from spreading smoothly outward, but can only slowly spread out along the tiny gaps of the explosion-proof joint surface inside the shell. At this time, the instantaneous temperature transmitted to the outside of the casing has been reduced to below the ignition temperature of the explosive gas mixture, so it will not cause detonation.
The working principle of the explosion-proof electric contact pressure gauge is based on the elastic deformation of the detection element (the spring tube in the measurement system), which drives the contacts in the electric contact group to produce corresponding actions (close or open) through mechanical transmission to make the control The circuit in the pressure system can be turned on or off, so as to realize the purpose of automatic control alarm and on-site indication
