RO
SR EN 61779-4:2004
Electrical apparatus for the detection and measurement of flammable gases -- Part 4: Performance requirements for group II apparatus indicating a volume fraction up to 100 % lower explosive limit
Specifies requirements for group II (as defined in part 1) portable, transportable and fixed apparatus for the detection and measurement of combustible gas or vapour concentrations with air. The apparatus, or parts thereof, may be installed or used in potentially explosive atmospheres, other than mines susceptible to firedamp (i.e. group I). This standard is restricted to apparatus intended for the detection and measurement of combustible gas or vapour concentrations with air up to 100% lower explosive limit (LEL).
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Status :
Withdrawn
Approval date : 10/28/2004
Publish date : 10/29/2004
Withdrawal date : 11/1/2010
Number of pages : 10
ICS : 17.060 Measurement of volume, mass, density, viscosity,29.260.20 Electrical apparatus for explosive atmospheres
Technical Committee : 137 - Electrical apparatus for explosive atmospheres
- Replaces SR EN 50057:2003
- Replaced by SR EN 60079-29-1:2008