Identifying Alarms - Dräger X-am 5000 Instrucciones De Uso

During operation
– During operation, the measured values for every measured gas are displayed.
– In the event of an alarm, the corresponding displays, the visual, audible and
vibration alarms are activated – see chapter "Identifying alarms".
– If a measuring range is exceeded or not reached, the following displays are
shown instead of the measured value display:
» « (measuring range exceeded) or
» « (below measuring range) or
» « (blocking alarm)
– If an O sensor is fitted and this sensor measures an O
2
below 12 vol. %, an error is indicated with »
of a measured value if the measured value is below the pre-alarm threshold
(not with the setting CH with measuring range >100 %LEL).
4
– After the measuring range of the TOX measuring channels has been
exceeded temporarily (up to one hour), checking the measuring channels is
not necessary.
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
.
If the DrägerSensor CatEx 125 PR is used in the gas detector, a zero point and
sensitivity calibration must be carried out after experiencing an impact load that
results in a non-zero display when exposed to fresh air. This warning does not
apply if the DrägerSensor CatEx 125 PR Gas is used.
20
concentration of
2
« on the ex-channel instead
NOTICE
).
WARNING

Identifying alarms

An alarm is displayed visually, audibly and through vibration in a specific pattern.
At low temperatures the legibility of the display can be improved by switching
on the backlight.
Concentration pre-alarm A1
Intermittent alarm:
Alternating display of » A1 « and measured value.
Not for O !
2
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
Intermittent alarm:
Alternating display of » A2 « and measured value.
For O : A1 = lack of oxygen
2
A2 = excess oxygen
Leave the area immediately. Danger to life! A main alarm is self-retaining and
cannot be acknowledged or cancelled.
After leaving the area, when the concentration has dropped below the alarm
threshold:
 Press the [OK] key; the alarm messages are switched off.
If the measuring range is exceeded significantly at the CatEx channel (very high
concentration of flammable materials), a blocking alarm is triggered. This CatEx
blocking alarm can be manually acknowledged by switching the instrument off
and on in fresh air.
In configuration setting CH with measuring range 100 vol.-%, no blocking alarm
4
is triggered as the heat conductance measuring principle is used for this purpose.
NOTICE
WARNING