Guide for the use of electronic portable combustion gas analysers for the measurement of carbon monoxide in dwellings and the combustion performance of domestic gas-fired appliances1 Scope 1. 1 This standard provides guidance for gas operatives on: a) the general use of an electronic portable combustion gas analyser conforming to BS EN 503793 and BS 7927: 1998 incorporating Amendment No. 1: 1999; NOTE 1 This standard assumes that a portable combustion gas analyser [often referred to colloquially as a flue gas analyser (FGA)] of the type specified in BS EN 503793 or BS 7927: 1998 incorporating Amendment No. 1: 1999 is available

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