Instructions - Specific For Use In Non-Hazardous Areas - Linde G-TECTA 4G Operating Manual

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5. Repair of this equipment and gas sensor
replacement shall be carried out by the
manufacturer or approved service centre in
accordance with the applicable code of practice.
6. If the equipment is likely to come into contact
with aggressive substances, then it is the
responsibility of the user to take suitable
precautions that prevent it from being
adversely affected, thus ensuring that the type
of protection is not compromised.
7. The rechargeable battery must only be charged
in non-hazardous (safe) areas by connection
to the specified Linde charger. Rechargeable
batteries can only be replaced by a Linde Group
Authorised Service Centre.
8. The equipment is not certified for use in
atmospheres containing more than 21% Oxygen.
Area Classifications:
Zone 1: An area classified as Zone 1 is likely
to have ignitable concentrations of flammable
gases, vapours or liquids present under normal
operating conditions.
Zone 2: An area classified as Zone 2 is not likely
to have ignitable concentrations of flammable
gases, vapours or liquids present under normal
operating conditions.
Instructions – specific for use in
non-hazardous areas
G-TECTA 4G with CO
®
The G-TECTA 4G multi-gas instrument uses an
®
infrared gas sensor for CO
4G with a CO sensor is not designed or certified
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for use in hazardous areas, and the intrinsic safety
information for this instrument is not applicable.
Operation and maintenance of the G-TECTA
4G with a CO sensor is essentially the same as
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for other G-TECTA 4G instruments but with the
®
following points to note:
CO is present in ambient air at a background
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concentration of just under 400ppm (0.04%).
In any enclosed environment the ambient CO
concentration will increase as a result of people
or animals breathing and if the room is poorly
ventilated concentrations well in excess of
1 000ppm (0.1%) can occur. CO
outdoor air will also be enhanced by any emitted
CO e.g. from vehicle exhausts or boiler flues
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venting to atmosphere so it is normal to see
fluctuating levels of CO
whether indoors or outside.
Sensor
2
detection. The G-TECTA
2
®
levels in the
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on the instrument display
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®
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