Combustible gas alarm is suitable for special environmental places. Its main function is to detect the concentration of flammable and explosive gases in the environment, prevent gas leakage and explosion accidents. However, the requirements of these special places are more stringent, usually the product has the corresponding explosion-proof requirements, even the combustible gas alarm is no exception. Do you know what kinds of explosion-proof types are available for combustible gas alarm ? The following is a brief introduction by yi yun Tian:

type explosion-proof of combustible gas alarm:

1. Increased safety

2, intrinsically safe

intrinsically safe explosion-proof type, it is that all circuits inside the detector of combustible gas alarm are intrinsically safe circuits that cannot ignite the specified explosive gas environment by any electric spark or any thermal effect generated under standard specified conditions (including normal operation and specified fault conditions), usually indicated by the letter "I. Among them, "iɑ" grade electrical equipment is intrinsically safe electrical equipment that cannot cause ignition under normal operation and application of a fault and any combination of two fault conditions. "ib" grade electrical equipment is intrinsically safe electrical equipment that cannot cause ignition under normal operation and application of a fault condition.

3, flameproof type

flameproof type, it means that the shell of the combustible gas alarm can withstand the internal explosion of the combustible mixture penetrating into the shell through any joint surface or structural gap of the shell without damage, and will not cause the ignition of the explosive environment formed by 1 or more gases or vapors outside.(note: the explosion-proof type of flameproof enclosure is usually called flameproof type, which is represented by the letter "d")

to sum up, we can see that the combustible gas alarm mainly includes three explosion-proof types: increased safety type, intrinsically safe type and flameproof type, its different explosion-proof types have their own advantages and characteristics, therefore, we can according to their own actual needs to carry out the appropriate explosion-proof type.