NF EN 45544-4:2016 工作場(chǎng)所氣氛 - 用于直接檢測(cè)有毒蒸氣和氣體并直接測(cè)量其濃度的電氣設(shè)備 - 第 4 部分:選擇、安裝、使用和維護(hù)指南
Workplace atmospheres - Electrical equipment used for the direct detection of toxic vapors and gases and the direct measurement of their concentration - Part 4: guide to selection, installation, use and maintenance