Explosion-proof, explosion-proof, what is the meaning of the Ann?1

Gas alarm as industrial security equipment, it has multiple parameters, is the most difficult to distinguish between alarm equipment explosion-proof, explosion-proof and this Ann type three indicators.

flame-proof ( d)交货 Technology is to use a shell put electrical components, the energy of the explosion inside the shell, through the shell of the gap, the electrical components released ignition pressure and temperature is reduced, thus ensuring the will not ignite explosive gas outside the shell.

is very easy to understand the concept of explosion-proof, an explosion caused by three factors: light source source of ignition. Oxygen oxygen; Less fuel combustible, one of them will not happen explosion, explosion-proof is put an end to these three factors, gas alarm shell out of contact with the outside world, the gas explosion combustion, will not affect the integrity of the equipment, which will not set off the explosion inside the shell components.

this Ann ( Ex iaib) Technology commonly used on the instrument, the Ann is intrinsically safe, through the security gate is restricted to attain the goal of explosion-proof, namely through the energy sparks to explode. Safety barrier, of course, must be in a safe place. In the gas alarm can be used to 0 or 1 area, is commonly set to use, in the use of the locale light blue logo.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor