1.Properties: The ratio of the minimum ignition current of the gas, vapor explosive mixture to the minimum ignition current of the methane explosive mixture under defined test conditions.
2.China provides gas and vapor dangerous substances according to the minimum ignition current ratio for the Ⅱ A grade, Ⅱ B and Ⅱ C level. The minimum ignition current ratio ≤ 1.0,> 0.8 for the Ⅱ A class; ≤ 0.8,> 0.45 for the Ⅱ B level; ≤ 0.45 for the Ⅱ C level. For example, ethane, ethylene, acetylene were Ⅱ A grade, Ⅱ B class, Ⅱ C class dangerous substances.
3.Explosion-proof junction box Features: 1. Cast aluminum alloy shell, the surface spray, beautiful appearance. Explosion-proof series of glass fiber reinforced unsaturated polyester resin molding molding shell. Or stainless steel welding molding.
