申海防爆
In both gas and temperature categories, BT4 exceeds AT3, therefore providing a higher explosion-proof rating.
| 三、 | C | 溫度135℃ | D b | IP65 |
|---|---|---|---|---|
| 三、 浮土 | T1 450℃ | 嘛 | IP65 | |
| T2 300℃ | MB | |||
| T3 200℃ | ||||
| A 易燃飛絮 | 和 | |||
| T4 135℃ | ||||
| D b | ||||
| 乙 非導電粉塵 | T2 100℃ | 直流 | ||
| A 導電粉塵 | T6 85℃ |
Class A includes gases such as ethane, methanol, ethanol, and gasoline; Class B comprises gases like residential gas, ethylene, and ethylene oxide.
The T3 temperature classification applies to environments up to 200℃ and includes 36 common gases such as gasoline and butyraldehyde. The T4 classification limits temperatures to 135℃, also for 36 gases including acetaldehyde and tetrafluoroethylene.