NBN EN 61779-2 : 2001
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ELEKTRISCH MATERIEEL VOOR DE DETECTIE EN METING VAN BRANDBARE GASSEN - DEEL 2 : GEBRUIKSEIGENSCHAPPEN VAN MATERIEEL VAN GROEP I MET EEN MEETBEREIK TOT 5 % VAN METHAAN IN LUCHT
08-29-2008
01-12-2013
Gives the requirements for group 1 portable, transportable and fixed apparatus for detecting and measuring the methane concentrations in mine air. This apparatus, or parts of apparatus are meant for use in mines susceptible to firedamp. Applicable to apparatus meant for detecting and measuring the volume ratios of methane in air from a volume fraction of 0% up to 5%.
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