KS C IEC 61779-3-2003(2018) 用于检测和可燃气体的测量用电气装置 - 第3部分:groupⅠapparatus运行性能的要求的体积分数达到在空气中100％的甲烷
Electrical devices for detecting and measuring combustible gases - Part 3 Performance requirements for Group I devices for detecting methane volume fraction