Qib siab yog C.
Qeb | Roj Classification | Cov neeg sawv cev gases | Yam tsawg kawg yog Ignition spark zog |
---|---|---|---|
Nyob rau hauv lub mine | Kuv | methane | 0.280mJ |
Factories sab nraum lub Mine | IIA | Propane | 0.180mJ |
IIB | Ethylene | 0.060mJ | |
IIC | hydrogen | 0.019mJ |
Explosion-proof classifications yog categorized rau hauv peb theem: IIA, IIB, thiab IIC. Cov IIC theem ranks saum IIB thiab IIA thiab feem ntau yog ib tug nqi ntau dua lossis.
Muaj coob tus neeg muas zaub yog uncertain txog uas tawg-pov thawj ntsuam xyuas xaiv. yeej tseem zoo, explosion-proof ratings correlate with the specific flammable and explosive gas mixtures encountered in the environment. piv txwv li, hydrogen corresponds to an IIC rating. pa roj carbon monoxide corresponds to an IIA rating; yog li ntawd, t, the applicable explosion-proof control box should also be IIA, though IIB is frequently used in its place.