KS C IEC 60079-29-2-2012(2017) Explosive atmospheres-Part 29-2:Gas detectors-Selection, installation, use and maintenance of detectors for flammable gases and oxygen
2012KS C IEC 60079-29-2:2012 Explosive atmospheres-Part 29-2:Gas detectors-Selection, installation, use and maintenance of detectors for flammable gases and oxygen