Identifying Alarms - Dräger MQG 0011 Gebrauchsanweisung

In the event of an alarm, the corresponding displays, including the

visual, audible and vibration alarms, are activated, see chapter 4.6
on page 23.
NOTICE
i
i
Special states in which there is no measuring operation
(quick menu, calibration menu, warm-up of sensors,
password input) are indicated by a visual signal (slow flashing
of the alarm LED
WARNING
!
If a CatEx sensor is used in the Dräger X-am 2500,
a calibration of zero point and sensitivity must be carried out
after experiencing an impact load that results in a non-zero
display when exposed to fresh air.
After the measuring range of the TOX measuring channels has been
exceeded temporarily (up to one hour), checking the measuring
channels is not necessary.
Dräger X-am 2500
4.6
An alarm is displayed visually, audibly and through vibration in
a specific pattern.
4.6.1
Intermittent alarm:

).




4.6.2
!
Intermittent alarm:


Identifying alarms

Concentration pre-alarm A1
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.
Acknowledge pre-alarm: Press the OK key. Only the audible alarm
and the vibration alarm are switched off.
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.
A2 display and alternating measured value.
For O : A1 = oxygen deficiency
2
A2 = excess oxygen
Operation
!
2
23