SIS SS-EN 50 056-1992 电气设备可燃气体的检测和测量．第一组仪器显示高达100 ％ （ V / V ）的甲烷的性能要求

标准号：SIS SS-EN 50 056-1992
中文标准名称：电气设备可燃气体的检测和测量．**组仪器显示高达100 ％ （ V / V ）的甲烷的性能要求
英文标准名称：Electrical apparatus for the detection and measurement of combustible gases — Performance requireménts for Group I apparatus indicating up to 100 % (v/v) methane
发布日期：1992/1/29 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：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).