GB 15322.1-2019 "Combustible gas detectors, Part 1: Point-type combustible gas detectors for industrial and commercial use" specifies the classification, requirements, testing, inspection rules and marking of point-type combustible gas detectors used in industrial and commercial places. This standard applies to detectors that detect hydrocarbons, ethers, esters, alcohols, carbon monoxide, hydrogen and Miscellaneous flammability gases and vapors, ensuring that they meet specific performance requirements during installation and use. Unless there are special requirements, this standard applies to all point-type combustible gas detectors used in industrial and commercial places. In addition, the standard refers to a series of relevant technical specifications and test methods to ensure the Stability and Reliability of detectors in explosive environments and electromagnetic interference environments.