Shenhai Explosion-Proof
Class IIB is suitable for environments where explosive mixtures of IIB gases and air occur.
| Gas group/temperature group | T1 | T2 | T3 | T4 | T5 | T6 |
|---|---|---|---|---|---|---|
| IIA | Formaldehyde, toluene, methyl ester, acetylene, propane, acetone, acrylic acid, benzene, styrene, carbon monoxide, ethyl acetate, acetic acid, chlorobenzene, methyl acetate, chlorine | Methanol, ethanol, ethylbenzene, propanol, propylene, butanol, butyl acetate, amyl acetate, cyclopentane | Pentane, pentanol, hexane, ethanol, heptane, octane, cyclohexanol, turpentine, naphtha, petroleum (including gasoline), fuel oil, pentanol tetrachloride | Acetaldehyde, trimethylamine | Ethyl nitrite | |
| IIB | Propylene ester, dimethyl ether | Butadiene, epoxy propane, ethylene | Dimethyl ether, acrolein, hydrogen carbide | |||
| IIC | Hydrogen, water gas | Acetylene | Carbon disulfide | Ethyl nitrate |
Explosion-proof classifications are split into primary levels for mining and secondary levels for factories. Within the secondary level, sub-classifications include IIA, IIB, and IIC, in ascending order of explosion-proof capability: IIA < IIB < IIC. The 'T' category denotes temperature groups. A ‘T’ rating implies that the equipment maintains a surface temperature below 135°C, with T6 being the optimal safety level, advocating for as low a surface temperature as possible.
Ultimately, this explosion-proof product is designed as an intrinsically safe electrical device, intended for use with Class B gases where the surface temperature does not exceed 135°C.