Line-Type Optical Beam Combustible Gas Detectors forIndustrial and Commercial Use; - Gas or smoke analysis apparatus (HS 902710); Fire protection (ICS 13.220.20)
National Standard of the P.R.C., Combustible Gas Detectors—Part 4: Line-type Optical Beam Combustible Gas Detectors for Industrial and Commercial Use (19 page(s), in Chinese)
This part specifies the classification, requirements, test, inspection rules and marks of line-type optical beam combustible gas detectors for industrial and commercial use. This part is applicable for line-type optical beam combustible gas detectors installed in industrial and commercial places to detect all kinds of combustible gases and vapors.