CEI UNI EN 45544-3:2015 工作场所大气有毒气体和蒸气直接检测和直接浓度测量用电气设备 第3部分:一般气体检测用设备的性能要求
Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours Part 3: Performance requirements for apparatus used for general gas detection