Identifying Alarms; Concentration Pre-Alarm A1; Concentration Main Alarm A2; Stel / Twa Exposure Alarm - Dräger X-am 1100 Technical Handbook

Identifying Alarms

Identifying Alarms
An alarm is displayed visually, audibly and through vibration in a specific pattern.

Concentration pre-alarm A1

The alarm is indicated by an intermittent alarm message:
Display » A1 « and measured value alternating: not for O
— The pre-alarm A1 is not self-latching and stops when the concentration has dropped below
the alarm setpoint A1.
— In the case of A1 a single tone is audible and the alarm LED flashes.
Acknowledging a pre-alarm:
Press the key. Only the audible alarm and the vibration alarm are switched off.
OK
on

Concentration main alarm A2

The alarm is indicated by an intermittent alarm message:
Display » A2 « and measured value alternating:
In the case of A2 a double tone is audible and the alarm LED flashes twice.
For O : » A1 « and measurement value alternating = oxygen deficiency
2
» A2 « and measurement value alternating = oxygen surplus
CAUTION:
Leave the area immediately. You are in mortal danger! A main
alarm is self-latching and cannot be acknowledged or cancelled.
After leaving the area, if the concentration is less than the alarm setpoint A2:
Press the key. The alarm messages are switched off.
OK
on

STEL / TWA exposure alarm

The alarm is indicated by an intermittent alarm message:
Display » A2 « and »
CAUTION:
Leave the area immediately. After this alarm, the deployment of
personnel is subject to the relevant national regulations.
— The STEL and TWA alarm cannot be acknowledged or cancelled.
Switch off the device. The values for the exposure evaluation are deleted after the device
is switched on again.
18
« or » « and measured value alternating:
!
2