YX-160-Bprovide againstExplosive contact pressure gauge Main technical indicators of explosion-proof electric contact pressure gauge
Accuracy level of explosion-proof electric contact pressure gauge: 1.5Medium energy instruments are preferred for pressure gauges.
Scale range of explosion-proof electric contact pressure gauge: 0-0.16; 0~0.25； 0～0.4； 0～0.6； 0～1； 0～1.6； 0~2.5； 0～4； 0～6； 0～10； 0～16； 0～25； 0～40； 0~60；- 0.1～0.06；- 0.1～0.15；- 0.1～0.3；- 0.1～0.5；- 0.1~0.9；- 0.1～1.5；- 0.1～2.4MPa
Explosion proof electric contact pressure gauge control mode: upper and lower limit slow moving contact switch
Maximum working voltage of explosion-proof electric contact pressure gauge: DC 220V or AC 380V;
Explosion proof electric contact pressure gauge contact power: 10VA
Explosion proof electric contact pressure gauge working position: vertical installation
The environmental conditions for the use of explosion-proof electric contact pressure gauges are -10~50 ℃, relative humidity not exceeding 80%, and explosive mixtures should belong to Class IIB T4 or below. The working vibration and rapid pulsation of the measured medium should not affect the reliable operation of the instrument contacts.
Temperature effect of explosion-proof electric contact pressure gauge: The reading should not exceed 0.4%/10 ℃, and the set point should not exceed 0.6%/10 ℃ (with a temperature deviation of 20 ± 5 ℃).
Insulation strength: 50Hz sine AC 2000V for one minute/Medium energy instruments are preferred for pressure gauges.
Weight: 6kg
·Types and basic parameters of explosion-proof joint surfaces

Note: An example of the effective length and gap width of the explosion-proof joint surface can be found in the schematic diagram of the explosion-proof shell structure.

·Explosion proof electrical contact pressure gauge, explosion-proof shell, and pressure system components and materials

Note: The material of the observation window of the explosion-proof electric contact pressure gauge has an impact resistance strength of not less than 4J. Once the observation window is damaged, it cannot be used.

Structural principle

The explosion-proof electric contact pressure gauge consists of an explosion-proof shell, a measuring system, an electric contact group, a regulating device, and an outlet box.

Explosion proof electric contact pressure gauges not only have explosion-proof shells that can withstand explosive gas mixtures inside the shell, but also have good explosion-proof performance; Therefore, explosion-proof electric contact pressure gauges can effectively prevent the smooth propagation of heat energy generated by sparks or arc materials during normal operation, in addition to the explosion pressure generated once an explosion occurs. They can only slowly diffuse outward along the small gaps of the explosion-proof joint surface inside the shell; At this point, 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 detonation.

Explosion proof electric contact pressure gaugeThe working principle of is based on the elastic deformation of the detection element (spring tube in the measurement system), which drives the contacts in the electrical contact group to produce corresponding actions (closing or opening) through mechanical transmission, so as to enable the circuit in the pressure control system to be connected or disconnected, thereby achieving the purpose of automatic control alarm and on-site indication.Medium energy instruments are preferred for pressure gauges.

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