EN 50073:1999: Guidance for selection, installation, use and maintenance of apparatus for the detection and measurement of combustible gases or oxygen.
JianCe 2075:2013: Gas and Vapor Detectors and Sensors.
NFPA 72: National Fire Alarm and Signaling Code.
IEC 60079-29-1: Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases.