Why industrial hazardous area require explosion proof sensors?

Why industrial hazardous area requires explosion proof sensors?

The formation of the explosion needs to meet three conditions, 
It’s oxygen, explosive gas, and detonation source.
In a flammable and explosive industrial environment, the installed transmitter may cause serious damage due to electrical sparks or hot surfaces, resulting in fire or explosion. Such as high-pressure flammable gas storage environment, flammable liquid vapor environment, flammable gas and other substances retention environment, etc., the transmitter used in these places should have an explosion-proof structure.

In the area where hazardous areas of explosion-proof Transmitter are installed, engineers must consider the following items:
1. Leakage concentration 2, ventilation state 3, lower explosion limit 4, flash point 5, release rate of explosive gas (release amount per unit time) 6, release rate 7, boiling point of flammable liquid 8, relative density 9, obstacle

The so-called explosion-proof structure means that the electric spark or the high-surface temperature  of the machine can be prevented from being an ignition source and protected by the casing, and the explosion is limited to the inside of the casing to achieve the purpose of explosion-proof.

Take eYc THM14EX EX-Series temp. and humidity transmitter as an example: The special consideration case of the structure is made of SUS304/ rugged aluminum alloy with a certain strength to withstand the pressure of the explosion. The threaded joints focus on shell and fastener material strength. Structural rigidity, flame path joint type, joint length, gap control.

It is used to temperature or relative humidity and temperature of air and other corrosive gases in explosion hazardous areas and flammable dust positions. It can accurately and stably perform measurement in severe industrial environments. IP 66 and certified for explosion-proof ATEx

Explosion-proof grade: Ex ia IIC T4 Ga; Ex tD A21 IP66 T95°C

eYc Measuring Specialist recommends that explosion-proof electrical equipment of appropriate specifications must be used in the area of hazardous areas to reduce fire and explosion accidents.