Kako razvrstiti eksplozijsko varne nivoje

Explosive gas environments are categorized into three levels—A, B, and C—based on the maximum experimental safe gap or the minimum ignition current required.

Razred in stopnja	Temperatura vžiga in skupina
-	T1	T2	T3	T4	T5	T6
-	T＞450	450≥T＞300	300≥T＞200	200≥T＞135	135≥T＞100	100≥T＞85
I	Metan
IIA	Etan, propan, aceton, fenetil, en, aminobenzen, toluen, benzen, amoniak, ogljikov monoksid, etil acetat, ocetna kislina	Butan, etanol, propilen, butanol, ocetna kislina, butil ester, amil acetat Ocetni anhidrid	Pentan, heksan, heptan, dekan, oktan, bencin, vodikov sulfid, cikloheksan, bencin, kerozin, dizel, nafta	Eter, acetaldehid, trimetilamin		Etilnitrit
IIB	Propilen, acetilen, ciklopropan, koksarniški plin	Epoksidni Z-alkan, epoksidni propan, butadien, etilen	Dimetil eter, izopren, vodikov sulfid	Dietileter, dibutil eter
IIC	Vodni plin, vodik	Acetilen			ogljikov disulfid	Etil nitrat

Devices are organized into six temperature classifications, ranging from T1 to T6, determined by the maximum allowable surface temperature.