SANS 60079-1-1-2004 爆炸性气体环境用电气设备.第1部分:防火外壳“d”.断定最大实验安全间隙的试验方法
Electrical apparatus for explosive gas atmospheres Part 1: Flameproof enclosures "d" - Method of test for ascertainment of maximum experimental safe gap
Describes a test method intended for the measurement of the maximum experimental safe gaps for gas- or vapour-air mixtures under normal conditions of temperature and pressure so as to permit the selection of an appropriate group of flameproof enclosures.