標準號：SIS SS-EN 50 055-1992
中文標準名稱：電氣設備可燃氣體的檢測和測量．可檢測甲烷在空氣中含量達5%（v/v）的**組儀器的性能要求
英文標準名稱：Electrical apparatusfor the detection and measurement ofcombustible gases - Performance requirements for Group I apparatus indicating upto5% (v/v) methane in air
發布日期：1992/1/29 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：1.1 This European Standard specifies performance requirements for Group I (as defined in European Standard EN 50 054) portable, transportable ar.d 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 firedamps and shall meet the general requirements and test methods specified in European StandardEN 50 054.NOTE. The use of Group I apparatus may not be permitted without the additional and prior approval of the relevant authority in mines under its jurisdiction, see Note 1 under clause 1.1 of EuropeanStandard EN 50 054.1.2 This European Standard is restricted to apparatus intended for i.he detection and measurement of methane volurae ratios in air from 0 % (v/v) up to but not exceeding 5 % (v/v).