BS EN 50379-3:2012 Specification for portable electrical apparatus designed to measure combustion flue gas parameters of heating appliances. Performance requirements for apparatus used in non-statutory servicing of gas fired heating appliances
2012BS EN 50379-1:2012 Specification for portable electrical apparatus designed to measure combustion flue gas parameters of heating appliances. General requirements and test methods
2005BS EN 50379-1:2004 Specification for portable electrical apparatus designed to measure combustion flue gas parameters of heating appliances - Part 1: General requirements and test methods
1998BS 7927:1998 Heating appliances for domestic applications - Portable apparatus designed to detect and measure specific combustion flue gas products - Requirements