DIN EN 45544-2-2000 工作场所空气.有毒气体和蒸气的直接浓度测量和直接检测用的电气装置.第2部分:在限制值范围内用于测量浓度的装置的性能要求
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 measuring concentrations in the region of limit values; Ge