[Online library] IEC 61779-3 Ed. 1.0 en:1998, Electrical apparatus for the detection and measurement of flammable gases - Part 3: Performance requirements for group I ... a volume fraction up to 100 % methane in air
Specifies requirements for group I (as defined in part 1) 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. The requirements and test methods applicable to the apparatus covered by this standard are specified in part 1. This standard is restricted to apparatus intended for the detection and measurement of volume ratio...
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You can specify the type of files you want, for your device.IEC 61779-3 Ed. 1.0 en:1998, Electrical apparatus for the detection and measurement of flammable gases - Part 3: Performance requirements for group I ... a volume fraction up to 100 % methane in air | IEC TC/SC 31. I really enjoyed this book and have already told so many people about it!