ʻO ke kiʻekiʻe o ka Pahū Pahū, CT1 a i ʻole CT4

Manaʻo ʻia ka helu kiʻekiʻe o ka CT4 explosion-proof classification.

Papa A me Papa	Ka wela wela a me ka hui
-	T1	T2	T3	T4	T5	T6
-	T＞450	450≥T＞300	300≥T＞200	200≥T＞135	135≥T＞100	100≥T＞85
I	Methane
IIA	ʻo ʻEtana, Propane, Acetone, Penethyl, Ene, Aminobenzene, Toluene, Benzene, Amonia, Kalapona Monoxide, Ethyl Acetate, Acetic Acid	Butane, Ethanol, Propylene, Butanol, Acetic Acid, Butyl Ester, ʻO Amyl Acetate Acetic Anhydride	Pentane, Hexane, Heptana, Decane, Octane, ʻaila hinu, Hydrogen Sulfide, Cyclohexane, ʻaila hinu, ʻAla ʻaila, Diesel, ʻAla ʻaila	Etera, Acetaldehyde, Trimethylamine		Ethyl Nitrite
IIB	Propylene, Acetylene, Cyclopropane, Kinea umu Coke	Epoxy Z-Alkane, Epoxy Propane, Butadiene, Ethylene	ʻO Dimethyl Etera, ʻO Isoprene, Hydrogen Sulfide	ʻO Diethylether, Dibutyl Etera
IIC	Kaha wai, Hūhāhā	Acetylene			Kalapona Disulfide	Ethyl Nitrate

Noonoo ia na mea a pau, paʻa kēlā me kēia mea i ka helu IIC, e hōʻike ana i ka lokahi ma kēia metric; akā naʻe, ʻike ʻia nā ʻokoʻa i loko o kā lākou papa wela: Loaʻa i nā mea T6 ka wela o ka ʻili he 85°C, Piʻi nā polokalamu T4 ma 135°C, a hiki i nā polokalamu T1 ke piʻi i ka 450°C.

Manaʻo nui ʻia nā mea pahū i helu ʻia ʻo T4 a hiki ke hoʻololi piha i nā hāmeʻa T1-helu ʻia.. Ma Mānoa, hoʻololi i nā mea hana CT1 me CT4 i kekahi noi e hōʻoia i ka palekana.