Class IIB is suitable for environments where explosive mixtures of IIB gases and air occur.
| Gaasi klassifikatsioon/temperatuurirühm | T1 | T2 | T3 | T4 | T5 | T6 |
|---|---|---|---|---|---|---|
| IIA | formaldehüüd, tolueen, metüülester, atsetüleen, propaan, atsetoon, akrüülhape, benseen, stüreen, süsinikmonooksiid, etüülatsetaat, äädikhape, klorobenseen, metüülatsetaat, kloor | Metanool, etanool, etüülbenseen, propanool, propüleen, butanool, butüülatsetaat, amüülatsetaat, tsüklopentaan | pentaan, pentanool, heksaan, etanool, heptaan, oktaan, tsükloheksanool, tärpentiin, nafta, nafta (sh bensiin), kütteõli, pentanooltetraklooriid | Atsetaldehüüd, trimetüülamiin | Etüülnitrit | |
| IIB | propüleenester, dimetüüleeter | butadieen, epoksüpropaan, etüleen | Dimetüüleeter, akroleiin, vesinikkarbiid | |||
| IIC | Vesinik, veegaas | Atsetüleen | Süsinikdisulfiid | Etüülnitraat |
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.
