RO
SR EN 50056:2003
Electrical apparatus for the detection and measurement of combustible gases - Performance requirements for Group I apparatus indicating up to 100 % (v/v) methane in air
This European Standard specifies performance requirements for Group I (as defined in EN 50054) 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 and shall meet the general requirements and test methods specified in EN 50054. This European Standard is restricted to apparatus intended for the 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)
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Status :
Withdrawn
Approval date : 3/31/2003
Publish date : 4/1/2003
Romanian version publish date : 3/31/2003
Withdrawal date : 9/29/2004
Number of pages : 10
ICS : 13.230 Explosion protection,19.080 Electrical and electronic testing
Technical Committee : 137 - Electrical apparatus for explosive atmospheres
- Replaced by SR EN 61779-3:2004