mru OPTIMA7 biogas User Manual page 8

Biogas or other similar gases (landfill gas, bio-methane, coal seam gas
etc) is containing flammable component CH4 and toxic component as
well (H2S and CO2).
Analysers sample a certain volume of the biogas, and vent it to the am-
bient air.
For this reason, there are two aspects which must be considered:
1) Inhaling toxic gases is harmful to health and can even cause death in
some cases.
• It is the responsibility of analyser user to ensure that person is skilled
• Local regulations for possible exposition to toxic gases have to be
• Using a personal gas detector inside the biogas plant is highly rec-
• CO2 gas is heavier than air and therefore operator shall avoid using
• It is not allowed using the portable biogas analyser in confined space
• Sample gas exiting the analyser will flow in the ambient air and only
2) Regarding flammable gases (e.g. CH
of operating the instruments, user must also be able to recognize the
area classification and be aware of using the instrument there. This area
classification is country specific, please observe and notice it.
• MRU instruments may be operated in hazardous areas zone 2 by
MRU GmbH, D-74172 Neckarsulm
USER MANUAL OPTIMA7 Biogas
1) toxicity danger of sample gas
2) flammable (explosion) danger of sample gas
and trained in safety aspects of gases being analysed and procedures
to follow while using this instrument.
known by the user and obeyed by the user of the analyser
ommended since H2S in higher (very dangerous concentration) can-
not be detected by human nose. Only small concentrations around
few ppm can be detected by human nose
portable biogas analyser at underground levels. Beside of that CO2 is
also odourless!
or rooms without sufficient ventilation.
outdoor use or forced ventilation rooms are suitable for using the
portable biogas analyser
skilled users obeying local guidelines e.g. by using LEL gas detectors
methane) and hazardous area
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