... logical address caused by Electronic digit block string number. 4. Explosion-proof design, it is suitable for II gas environment5. Adopts ... thread G 3/4" internal thread Dimension 70mm×96mm×170mm Explosion-proof sign ExdIICT6 Protection class IP65Detection Gas Combustible gas, VOC ( ... Certain Organic Vapors), H2(ppm), CO,H2S,O2(VOL),NH3 ppm),Cl2,NO,SO2 Working condition ...