EN 50379-3-2012 用于测量加热器具燃烧烟气参数的便携式电气装置规范.第3部分:燃气式加热器的非法定维修用装置的性能要求
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