Crowcon Gasman User Manual page 8

Unpacking
Warning: rechargeable units
Only charge the rechargeable Gasman Personal Monitor with a Crowcon
Gasman charger. Failure to comply could invalidate safety certification,
warranty and safety; and may result in permanent damage to the unit.
Non-rechargeable units.
Gasman uses a CR2 battery which can be easily field replaced. Ensure
only the correct types of battery are fitted to maintain compliance with
certification (see Battery check on page 1).
Gasman IR CO
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The Gasman IR CO
for CO detection. This version of Gasman is not designed or certified
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for use in a hazardous area, and the safety certification data in Section
X is not applicable. Operation and maintenance of the Gasman IR CO
is essentially the same as for other Gasman units but with the following
points to note.
CO is present in ambient air at a background concentration of just under 400ppm (0.04%). In
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any enclosed environment the ambient CO
and if the room is poorly ventilated concentrations well in excess of 1000ppm (0.1%) can
occur. CO levels in the outdoor air will also be enhanced by any emitted CO
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exhausts or boiler flues venting to atmosphere so it is normal to see fluctuating levels of CO
the display whether indoors or outside.
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Personal Single Gas Monitor
personal single gas monitor an infrared gas sensor
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concentration will increase as a result of respiration
Gasman
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e.g. from vehicle
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on
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