Dräger X-am 2800 Notice D'utilisation page 41

1.2 Use in areas subject to explosion hazards
To reduce the risk of ignition of a flammable or explosive atmosphere, strictly
observe the following warnings:
Use in areas subject to explosion hazards
Devices or components for use in explosion-hazard areas which have been
tested and approved according to national, European or international explosion
protection regulations may only be used under the conditions specified in the
approval and with consideration of the relevant legal regulations. The devices or
components may not be modified in any manner. The use of faulty or incomplete
parts is forbidden. The appropriate regulations must be observed at all times
when carrying out repairs on these devices or components.
Oxygen enriched atmospheres
Explosion protection is not ensured in oxygen enriched atmospheres (>21 Vol%
).
O
2
► Remove the device from the explosion-hazard area.
Oxygen deficient atmospheres
The CatEx sensor may display false readings and incorrect measured values
when used for measurements in an oxygen deficient atmosphere (<12 Vol%
O ). In this case the CatEx sensor cannot provide a reliable measurement.
2
► The CatEx sensor is intended to measure flammable gases and vapours
mixed with air (i.e. O
12 Vol% and an operational O
channel error is triggered on the CatEx channel due to oxygen deficiency.
► A CatEx sensor should preferably be operated with an active XXS O
PR sensor so that oxygen deficiency can be evaluated by the gas detector.
► Remove the gas detector from the area and discontinue measurement.
Incorrect calibration
CAUTION: An incorrect calibration leads to incorrect measured values.
► CSA requirement (Canadian Standard Association): The sensitivity must be
checked daily before first using the device, with a known concentration of the
gas to be measured that corresponds to 25 to 50 % of the final
concentration. The accuracy must be 0 to +20 % of the actual value. The
accuracy can be corrected by calibration.
®
X-am 2800 / X-am
content ≈ 21 Vol%). If the O
2
sensor is available in the gas detector, a
2
®
5800
Safety-related information
content falls below
2
|
en
or O
2 2
41