EN 50379-3:2004 Specification for portable electrical apparatus designed to measure combustion flue gas parameters of heating appliances Part 3: Performance requirements for apparatus used in non-statutory servicing of gas fired heating appliances
2012EN 50379-3:2012 Specification for portable electrical apparatus designed to measure combustion flue gas parameters of heating appliances - Part 3: Performance requirements for apparatus used in non-statutory servicing of gas fired heating appliances
2004EN 50379-3:2004 Specification for portable electrical apparatus designed to measure combustion flue gas parameters of heating appliances Part 3: Performance requirements for apparatus used in non-statutory servicing of gas fired heating appliances