He pai te karaehe IIB mo nga taiao ka puta nga ranunga pahū o te hau IIB me te hau.
Rōpū hau/rōpū pāmahana | T1 | T2 | T3 | T4 | T5 | T6 |
---|---|---|---|---|---|---|
IIA | Formaldehyde, toluene, methyl hākawa, acetylene, propane, acetone, waikawa kiriaku, te pene, styrene, waro haukura, ethyl acetate, waikawa ahetiki, pūhāhā, methyl acetate, māota | Mewaro, waiwaro, ethylbenzene, propanol, propylene, pūtānora, butyl acetate, amyl acetate, cyclopentane | Penetane, pentanol, hexane, waiwaro, hepetane, octane, cyclohexanol, turpentine, napata, hinuhinu (tae atu ki te penehīni), hinu hinu, tetrachloride pentanol | Acetaldehyde, trimethylamine | Ethyl nitrite | |
IIB | Propylene ester, dimethyl ether | Butadiene, epoxy propane, ethylene | Dimethyl ether, acrolein, hauwai carbide | |||
IIC | hauwai, hau wai | Aetilena | Te waro disulfide | Ethyl pākawa |
Ka wehewehea nga whakarōpūtanga pahū ki nga taumata tuatahi mo te maina me nga taumata tuarua mo nga wheketere. I roto i te taumata tuarua, ko nga whakarōpūtanga iti ko te IIA, IIB, me te IIC, i roto i te raupapa pikinga o te kaha pahū: IIA < IIB < IIC. The 'T' category denotes pāmahana roopu. 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.
Ka mutu, this explosion-proof product is designed as an tino haumaru electrical device, intended for use with Class B gases where the surface temperature does not exceed 135°C.