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See Chinese contents: GB/T 31911-2015 GB/T 31911-2015: Methods for determination of emissions from appliances burning gaseous fuels
This standard specifies the terms and definitions, measurement systems, analyzers, auxiliary equipment and accessories, system inspection, sampling, test operations, calculation methods for the determination of NOx, CO, CO2, O2 in emissions from appliances burning gaseous fuels. This standard applies to the determination of emissions during type inspection and other inspections of appliances burning gaseous fuels.
