標準號：SIS SS-EN 50 056-1992
中文標準名稱：電氣設備可燃氣體的檢測和測量．**組儀器顯示高達100 ％ （ V / V ）的甲烷的性能要求
英文標準名稱：Electrical apparatus for the detection and measurement of combustible gases — Performance requireménts for Group I apparatus indicating up to 100 % (v/v) methane
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, tr.msportable and fixed apparatus for the detection and measurement of meuhane concentrations in mine air. The apparatus, or parts thereof, are in;ended for use in mines susceptible to firedamp and shall meet the general requirements and test methods specified in European Standard EM 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 it jurisdiction, see Note 1 under Clause 1.1 of European Standards EN 50 054.1.?. This European Standard is restricted to apparatus intended for th? detection and measurement of volume ratios of methane in air from 0 % (v/v) up to 100 % (v/v).NOTE. Apparatus covered by this European Standard will normally be intended to operate in volume ratios greater than 5 % (v/v).