BS EN ISO/IEC 80079-20-2:2016描述了可燃气体识别的试验方法 粉尘和可燃粉尘层，以便对此类区域进行分类 材料的存在是为了正确选择和安装电气和电气设备 存在可燃粉尘时使用的机械设备。可燃性粉尘特性测定的标准大气条件 分别为:温度-20°C至&plus；60°C，压力80千帕（0.8巴）至110千帕（1.1巴），空气含氧量正常，通常为21%v/v。规定的试验方法不适用于:公认的炸药、推进剂（如火药、炸药）或物质或混合物 指在某些情况下可能以类似方式表现的物质，或不需要大气氧气的炸药和推进剂 燃烧，或自燃物质。交叉引用:ASTM 1491-06EN 13821EN 14034-1ISO 4225ISO/IEC 80079- 34VDI 2263购买本文件时提供的所有现行修订均包含在购买本文件中。

BS EN ISO/IEC 80079-20-2:2016 describes the test methods for the identification of combustible dust and combustible dust layers in order to permit classification of areas where such materials exist for the purpose of the proper selection and installation of electrical and mechanical equipment for use in the presence of combustible dust.The standard atmospheric conditions for determination of characteristics of combustible dusts are:temperature -20 °C to +60 °C,pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar) andair with normal oxygen content, typically 21 % v/v.The test methods defined do not apply to:recognized explosives, propellants (e.g. gunpowder, dynamite), or substances or mixtures of substances which may, under some circumstances, behave in a similar manner ordusts of explosives and propellants that do not require atmospheric oxygen for combustion, or to pyrophoric substances.Cross References:ASTM 1491-06EN 13821EN 14034-1ISO 4225ISO/IEC 80079-34VDI 2263All current amendments available at time of purchase are included with the purchase of this document.