Agbegbe Imudaniloju Ewo ni DIIBT4

Awọn yiyan dIIBT4 ntokasi si a Kilasi II, Ẹka B bugbamu-ẹri Rating.

II	B	T4	Gb	IP64
Mine I	Methane	T1 450℃	Ma Extremely high level of protection	IP64
		T2 300 ℃
			Mb High level protection
		T3 200 ℃
I Surface Materials	Propane		Ga Extremely high level of protection
		T4 135 ℃
	Ethylene		Gb High level protection
		T5 100℃
	Hydrogen, Acetylene		Gc General level protection
		T6 85 ℃

The prefix ‘d’ denotes a flameproof type of enclosure, ti a ṣe apẹrẹ ki eyikeyi bugbamu ti inu wa ninu laisi ibajẹ apade ati idilọwọ itankale bugbamu ni ita;

IIB ṣe pato ẹka ti gaasi ti a lo;

T4 signifies that the product’s maximum surface otutu remains below 130°C.