Part 20-1: Material characteristics for gas and vapour classification – Test methods and data
(IEC 60079-20-1:2010); German version EN 60079-20-1:2010 Class/Status:
VDE Art. No.: 0170103
This part of IEC 60079 provides guidance on classification of gases and vapours. It describes a test method intended for the measurement of the maximum experimental safe gaps (MESG) for gas- or vapour-air mixtures under normal conditions of temperature and pressure so as to permit the selection of an appropriate group of equipment. The method does not take into account the possible effects of obstacles on the safe gaps. This standard describes also a test method intended for use in the determination of the auto-ignition temperature of a chemically pure vapour or gas in air at atmospheric pressure.
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