Shenhai Pasi-Faamaoniga
Muamua, o masini uma e tolu ua mamanuina mo le puipuiga o le paʻu o le pefu ma pa'ū i lalo o le vaega o meafaigaluega faʻamaonia lona lua. O fa'amaumauga e fa'amaonia le pa e fa'apea: AT < BT < CT.
| Tulaga Vaega | Fa'avasegaga kasa | Kasa sui | Malosi'i Fa'amumu Fa'amumu |
|---|---|---|---|
| I lalo o le Mine | I | Methane | 0.280mJ |
| Falegaosi i fafo o le Mine | IIA | Propane | 0.180mJ |
| IIB | Ethylene | 0.060mJ | |
| IIC | Hydrogen | 0.019mJ |
CT devices feature a superior dust-proof rating and may be utilized in areas designated for AT and BT. Peitai, AT and BT devices are not suitable for areas that require CT standards.
I se isi faaupuga, CT devices can substitute for AT and BT, but AT and BT devices cannot substitute for CT.