Cover DIN EN 60079-29-4 VDE 0400-40:2011-02
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DIN EN 60079-29-4 VDE 0400-40:2011-02

* German Language Version *

Explosive atmospheres

Part 29-4: Gas detectors – Performance requirements of open path detectors for flammable gases

(IEC 60079-29-4:2009, modified + Cor.:2010); German version EN 60079-29-4:2010
Class/Status: Standard, valid
Released: 2011-02
VDE Art. No.: 0400049

Contents

This standard specifies performance requirements of equipment for the detection and measuring of flammable gases or vapours in ambient air by measuring the spectral absorption by the gases or vapours over extended optical paths, ranging typically from one metre to a few kilometres. Such equipment measures the integral concentration of the absorbing gas over the optical path in units such as LFL metre for flammable gases.