Razvrstitev protieksplozijske zaščite opreme CT4 presega opremo BT4.
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 |
jaz | Metan | |||||
IIA | Etan, propan, Aceton, Fenetil, Ene, aminobenzen, Toluen, Benzen, amoniak, Ogljikov monoksid, Etil acetat, Ocetna kislina | Butan, Etanol, Propilen, Butanol, Ocetna kislina, Butil ester, Amil acetat anhidrid ocetne kisline | Pentan, Heksan, heptan, Decane, oktan, Bencin, vodikov sulfid, Cikloheksan, Bencin, kerozin, Dizelsko gorivo, Nafta | Eter, Acetaldehid, trimetilamin | Etil nitrit | |
IIB | Propilen, Acetilen, ciklopropan, Koksarni plin | Epoksi Z-alkan, Epoksi propan, butadien, Etilen | Dimetil eter, Izopren, vodikov sulfid | Dietileter, dibutil eter | ||
IIC | Voda Plin, vodik | Acetilen | Ogljikov disulfid | Etil nitrat |
BT4 je razvrščen kot temperaturna skupina razreda B, kjer najvišja površinska temperatura naprav z oceno T4 ne presega 135 °C. CT4 ima oznako razreda C za zaščito pred eksplozijo, primerljivo z 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, nafta, in vodik sulfide.
CT4 encompasses a broader range of less common eksplozivno plini, such as hydrogen and water gas at the CT1 level, acetylene at the CT2 level, and carbon disulfide at the CT4 level.