Dè am fear aig a bheil an ìre dearbhaidh spreadhaidh as àirde, BT4 no CT4

Tha an seòrsachadh dìon-spreadhaidh de uidheamachd CT4 a’ dol thairis air uidheamachd BT4.

Clas Agus Ìre	Teòthachd Ignition Agus Buidheann
-	T1	T2	T3	T4	T5	T6
-	T = 450	450≥T = 300	300≥T＞200	200≥T = 135	135≥T = 100	100≥T＞85
mi	Meatan
IIA	Ethan, Propane, Acetone, Phenethyl, Eòin, Aminobenzene, Toluene, Beinséin, Ammonia, Carbon Monoxide, Acetate Ethyl, Acetic Acid	Bùtan, Ethanol, Propylene, Bùtanol, Acetic Acid, Ester Butyl, Amyl Acetate Acetic Anhydride	Pentane, Hexane, Heptane, Deasaich, Ochdainn, Gasoline, Hydrogen sulfide, Cyclohexane, Gasoline, Ceirisín, Dìosail, Peatrail	Ether, Acetaldehyde, Trimethylamine		Ethyl nitrite
IIB	Propylene, Acetylene, Cyclopropane, Gas àmhainn Coke	Epoxy Z-alkane, Epoxy propane, Bùtaidhne, Eitilein	Ether dimethyl, Isoprene, Hydrogen sulfide	Diethylether, Dibutyl Ether
IIC	Gas uisge, Hydrogen	Acetylene			Carbon Disulfide	Ethyl nitrate

Tha BT4 air a chomharrachadh mar bhuidheann teòthachd Clas B, far nach eil an teòthachd uachdar as àirde airson innealan ìre T4 nas àirde na 135 ° C. Tha ìre dìon-spreadhaidh Clas C aig CT4, coimeas ri BT4, and is suitable for environments with hazardous gases such as hydrogen and acetylene, maintaining a maximum surface temperature of 135°C.

Scope of Use

BT4 is suitable for common gases including methane, ethane, peatrail, agus haidridean sulfide.

CT4 encompasses a broader range of less common spreadhach gasaichean, such as hydrogen and water gas at the CT1 level, acetylene at the CT2 level, and carbon disulfide at the CT4 level.