... 5 year sensor life Product Overview: KQ500 series fixed gas detector(also gas transmitter): with 6 years experience in designing and producing ... and fields. It can detect various gases such as flammable gas, O2,H2S,CO,HCN,NO2,SO2,NH3,HCL,CL2, ... LevelExd IICT6(used for explosion proofing detector);ExiaIICT4(used for intrinsic safety type detector)Protection ClassIP66 Product Information Chart Product ...