BS PD 6574:1994 PDF

Scope: This draft describes test methods and automatic measuring equipment for the determination of NO (NO +N0), CO, C0 and O emissions in the flue gases including the sampling system and the calibration gases. The document should be introduced in the relevant gas appliances TC. Gas cookers, flueless appliances and appliances especially designed for use in industrial processes carried out on industrial premises are excluded from the scope. According to their principles of analysing the combustion products, the analyzers are classified into following families : - analyzers based on the chemiluminescent effect: NO an NO, - analyzers based on the absorption of infra-red and ultra-violet radiation : NO and NO for concentrations > 100 ppm, CO and CO, - analyzers based on the paramagnetic principle : 0, - electrochemical analyzers : they are considered to be inadequate for laboratory testing procedures. The conversion of measured levels to reference conditions is given in appendix 1.

BS PD 6574:1994 Referenced Document

ISO 10396 Stationary source emissions - Sampling for the automated determination of gas emission concentrations for permanently-installed monitoring systems*， 2007-02-01 Update
ISO 3534 Statistics — Vocabulary and symbols
ISO 6142 Gas analysis - Preparation of calibration gas mixtures - Gravimetric method; Amendment 1: Liquid introduction*， 2009-05-15 Update
ISO 6976 Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition*， 2016-08-01 Update

1994 BS PD 6574:1994 Determination of emissions from appliances burning gaseous fuels during type-testing