EN 45544-2:2015
工作场所大气 用于有毒气体和蒸汽的直接检测和直接浓度测量的电气设备 第2部分：用于暴露测量的设备的性能要求
Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 2: Performance requirements for apparatus used for exposure measurement