IEC 61779-5-1998
可燃性气体的检测和测量用电气设备第5部分:II类设备(指示气体的体积百分率最大为100%)的性能要求已作废

可燃性气体的检测和测量用电气设备第5部分:II类设备(指示气体的体积百分率最大为100%)的性能要求 是非强制性国家标准，您可以免费下载前三页

适用范围: 1 This part of IEC 61779 specifies requirements for group II (as defined in part 1) portable, transportable and fixed apparatus for the detection and measurement of combustible gas or vapour concentrations with air. The apparatus, or parts thereof, may be installed or used in potentially explosive atmospheres, other than mines susceptible to firedamp (i.e. group I). The requirements and test methods applicable to the apparatus covered by this standard are specified in part 1. 2 This standard is restricted to apparatus intended for the detection and measurement of volume ratios of combustible gas or vapour in air in volume fractions from 0 % to 100 %. NOTE 1 - Apparatus covered by this standard will normally be intended to operate in volume ratios greater than 100 % LEL. NOTE 2 - Although apparatus of the types covered by this standard may be suitable for detecting a wide range of combustible gases, particular gases (e.g. methane or propane) are specified in part 1 as the components of the test gases for the purpose of practical convenience. The performance requirements specified in this standard should therefore be considered with caution when the apparatus is used to detect other combustible gases, as some parameters - such as time of response - will be modified.

IEC 61779-5-1998可燃性气体的检测和测量用电气设备 第5部分:II类设备(指示气体的体积百分率最大为100%)的性能要求已作废