Iza amin'ny haavo tsy misy fipoahana no ambony kokoa, BT4 na CT6

Ny maodely BT4 dia sokajiana ao amin'ny Class B tsy misy fipoahana miaraka amin'ny mari-pana T4, stipulating that the equipment’s surface temperature cannot exceed 135°C.

Kilasy sy ambaratonga	Temperature ignition sy vondrona
-	T1	T2	T3	T4	T5	T6
-	T＞450	450≥T＞300	300≥T＞200	200≥T＞135	135≥T＞100	100≥T＞85
aho	metanina
IIA	Etana, propane, acétone, Phenethyl, Ene, Aminobenzene, Toluene, Benzene, amoniaka, Carbon Monoxide, Ethyl Acetate, asidra asidra	Butane, Ethanol, propylene, Butanol, asidra asidra, Butyl Ester, Amyl Acetate Acetic Anhydride	Pentane, Hexane, Heptana, Decane, Octane, lasantsy, Hydrogène sulfide, cyclohexane, lasantsy, solitany, Diesel, solitany	Etera, Acetaldehyde, Trimethylamine		Ethyl Nitrite
IIB	propylene, Acetylene, cyclopropane, Gasy lafaoro Coke	Epoxy Z-Alkana, Epoxy propane, Butadiene, Ethylene	Dimethyl Etera, Isoprene, Hydrogène sulfide	Diethylether, Dibutyl Etera
IIC	Entona rano, hydrogène	Acetylene			Carbon disulfide	Ethyl Nitrate

Mifanohitra, ny maodely CT6 dia manana naoty tsy misy fipoahana Class C, covering the requirements of BT4 and applicable to zones with dangerous gases like hydrogen and acetylene. T6 equipment must maintain a surface temperature no higher than 85°C.

Amin'ny resaka hafanana categories, T6 represents the highest safety level, suggesting that a lower equipment surface temperature is preferable.

Vokatr'izany, CT6 possesses a superior explosion-proof classification.