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).
Analyzers sample a certain volume of the biogas, and vent it to the ambient
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 analyzer user to ensure that person is skilled and
• Local regulations for possible exposition to toxic gases have to be known
• Using a personal gas detector inside the biogas plant is highly recom-
• CO2 gas is heavier than air and therefore operator shall avoid using porta-
• It is not allowed using the portable biogas analyzer in confined space or
• Sample gas exiting the analyzer will flow in the ambient air and only out-
2) Regarding flammable gases (e.g. CH4 methane) and hazardous area of op-
erating the instruments, user must also be able to recognize the area classifi-
cation 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 skilled
MRU GmbH, D-74172 Neckarsulm
USER MANUAL OPTIMA7 Biogas
1) toxicity danger of sample gas
2) flammable (explosion) danger of sample gas
trained in safety aspects of gases being analyzed and procedures to fol-
low while using this instrument.
by the user and obeyed by the user of the analyzer
mended since H2S in higher (very dangerous concentration) cannot be
detected by human nose. Only small concentrations around few ppm can
be detected by human nose
ble biogas analyzer at underground levels. Beside of that CO2 is also
odourless!
rooms without sufficient ventilation.
door use or forced ventilation rooms are suitable for using the portable
biogas analyzer
users obeying local guidelines e.g. by using LEL gas detectors
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