en | Conventions in this document
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NOTICE
Damage to the CatEx sensor!
Fractions of catalytic poisons in the measuring gas (e.g. volatile silicon, sulphur,
heavy metal compounds or halogenated hydrocarbon) can damage the Cat Ex
sensor.
► If the CatEx sensor can no longer be calibrated to the target concentration,
replace the sensor.
WARNING
Risk of explosion!
If the CatEx sensor is exposed to hydrogen and low temperatures (< -10 °C) for
a long time (> 1 h), measured values that are too low may be displayed. This
also applies if hydrogen is being measured but the measured gas set is not
hydrogen.
► The CatEx sensor should be set to the measured gas “hydrogen”for regular
and planned measurements of hydrogen. Measuring tasks which last less
than 30 min. are not affected by this.
Increased hydrogen concentrations within the measuring range of the
DrägerSensor XXS H
2 HC and CatEx sensor may trigger false alarms by
additively influencing Dräger sensors XXS H
2S and XXS CO, XXS H2S-LC and
XXS CO-LC, and negatively influencing DrägerSensor XXS O2 and XXS O2 PR.
2 Conventions in this document
2.1 Meaning of the warning notes
The following warning notes are used in this document to notify users of
possible dangers. The meanings of the warning notes are defined as follows:
Alert icon Signal word Consequences in case of nonob-
servance
WARNING Indicates a potentially hazardous situa-
tion. If not avoided, it could result in death
or serious injury.
CAUTION Indicates a potentially hazardous situa-
tion. If not avoided, it could result in phys-
ical injury. It may also be used to alert
against unsafe practices.
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