标准摘要
[中文适用范围]： IEC 61779 的本部分规定了用于检测和测量矿井空气中甲烷浓度的 I 组（如第 1 部分中定义）便携式、可运输和固定设备的要求。该设备或其部件旨在用于易受沼气影响的矿井中。适用于本标准所涵盖设备的要求和测试方法在第 1 部分中规定。 注 - 未经其管辖范围内的矿山相关当局的额外和事先批准，不得使用 I 类设备，参见注 1第 1 部分 1.1.1 的规定。 2 本标准仅限于用于检测和测量空气中甲烷体积分数从 0% 到但不超过 5% 体积分数的设备。 [外文原描述]： Specifies requirements for group I (as defined in part 1) portable, transportable and fixed apparatus for the detection and measurement of methane concentrations in mine air. The apparatus, or parts thereof, are intended for use in mines susceptible to firedamp. The requirements and test methods applicable to the apparatus covered by this standard are specified in part 1. This standard is restricted to apparatus intended for the detection and measurement of volume ratios of methane in air from a volume fraction of 0 % up to, but not exceeding, a volume fraction of 5%.
英文名称Electrical apparatus for the detection and measurement of flammable gases - Part 2: Performance requirements for group I apparatus indicating a volume fraction up to 5 % methane in air