The BT4 model is classified under Explosion-proof Class B with a temperature rating of T4, stipulating that the equipment’s surface temperature cannot exceed 135°C.
| Gāzes klasifikācija | Temperatūras grupa | |||||
|---|---|---|---|---|---|---|
| - | T1 | T2 | T3 | T4 | T5 | T6 |
| - | T＞450 | 450 ≥ T > 300 | 300 ≥ T > 200 | 200≥T＞135 | 135 ≥ T > 100 | 100 ≥ T > 85 |
| I | Metāns | |||||
| IIA | Etāns, propāns, acetons, fenetils, enē, aminobenzols, toluols, benzols, amonjaks, oglekļa monoksīds, etilacetāts, etiķskābe | Butāns, etanols, propilēns, butanols, etiķskābe, butilesteris, amilacetāts, etiķskābes anhidrīds | Pentāns, heksāns, heptāns, dekāns, oktāns, benzīns, sērūdeņradis, cikloheksāns, benzīns, petroleja, dīzeļdegviela, nafta | Ēters, acetaldehīds, trimetilamīns | Etilnitrīts | |
| IIB | Propilēns, acetilēns, ciklopropāns, koksa krāsns gāze | Epoksīda Z-alkāns, epoksīda propāns, butadiēns, etilēns | Dimetilēteris, izoprēns, sērūdeņradis | Dietilēteris, dibutilēteris | ||
| IIC | Ūdens gāze, ūdeņradis | Acetilēns | Oglekļa disulfīds | Etilnitrāts | ||
Conversely, the CT6 model holds a Class C explosion-proof rating, 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.
In terms of temperature categories, T6 represents the highest safety level, suggesting that a lower equipment surface temperature is preferable.
As a result, CT6 possesses a superior explosion-proof classification.
