Identifying Alarms - Dräger X-am 2500 Instrucciones De Uso

No blocking alarm is triggered in the "methane" configuration setting
when a measuring range is exceeded, because the unambiguousness
of the display for methane is ensured via a separate measurement of
the heat conductivity.
WARNING
!
After exposure to concentrations above 100 %LEL, incorrect
displays may occur at the CatEx channel. Check the zero point
and sensitivity and adjust it if necessary before continuing to use
the instrument in a concentration range of 0 to 100 %LEL.
In the event of an impact load when using a CatEx sensor in
the Dräger X-am 2500 that causes the fresh air display to
deviate from zero, the zero point and sensitivity must
adjusted.
After the measuring range of the TOX measuring channels has been
exceeded temporarily (up to one hour), checking the measuring
channels is not necessary.
4.6

Identifying alarms

An alarm is displayed visually, audibly and through vibration in a specific
pattern.
4.6.1 Concentration pre-alarm A1
Intermittent alarm:
Alternating A1 display and measuring value. Not for O

The pre-alarm A1 is not latching and stops when the concentration

has dropped below the alarm threshold A1.
In case of A1, a single tone is audible and the alarm LED flashes.

In case of A2, a double tone is audible and the alarm LED flashes twice.

Dräger X-am 2500
Acknowledge pre-warning: Press the OK-key. Only the audible

alarm and the vibration alarm are switched off.
4.6.2 Concentration main alarm A2
WARNING
!
Risk of fatal injury! Leave the area immediately. A main alarm
is self-retaining and cannot be acknowledged or cancelled.
Intermittent alarm:
A2 display and alternating measured value.

For O :
2
After leaving the area, when the concentration has dropped below
the alarm threshold:
Press the OK-key. The alarm messages are switched off.

A blocking alarm on the CatEx channel (due to a significant

exceeding of the measuring range) cannot be acknowledged via
the OK-key. The CatEx blocking alarm is either acknowledged
automatically through a functional (e. g. free of warnings and
errors) oxygen channel or manually by switching the instrument on
and off in fresh air.
!
2
A1 = lack of oxygen
A2 = excess oxygen
Operation
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