STEL / TWA exposure alarm
The alarm is indicated by an intermittent alarm
message:
Display » A2 « and »
« (STEL) or »
alternating:
Risk to health! 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.
z
Switch off the instrument. The values for the exposure evaluation are
deleted after the instrument is switched on again.
Battery pre-alarm
The alarm is indicated by an intermittent alarm
message:
Flashing special symbol »
« on the right side of the display:
Acknowledging the pre-alarm:
z
Press the [ OK ] key, only the audible alarm and the vibration alarm are
switched off.
–
The battery still lasts approx. 20 minutes after the first battery pre-alarm.
Battery main alarm
The alarm is indicated by an intermittent alarm
message:
Flashing special symbol »
« on the right side of the display:
The battery main alarm cannot be acknowledged or cancelled:
–
The instrument is automatically switched off after 10 seconds.
–
Before the instrument is switched off, the visual, audible and vibration
alarms are activated for a short time.
Instrument alarm
The alarm is indicated by an intermittent alarm
message:
16
« (TWA) and measured value
WARNING
Special symbol »
« displayed on the right side of the display:
–
The instrument is not ready for operation.
z
Commission maintenance personnel or the Dräger Service to eliminate the
error.
Calling the Info Mode
z
In measuring mode, press the [ OK ] key for approx. 3 seconds.
–
If any warning or fault messages exist, the corresponding note or error
codes are displayed (see the Technical Handbook). Press the [ OK ] key
successively for the next display. The peak values and the exposition
values TWA and STEV will be displayed.
–
If no key is pressed for 10 seconds, the instrument returns automatically to
measuring mode.
Calling the Info Off Mode
z
With the instrument switched off, press the [ + ] key for approx. 2 seconds.
The name of the gas, measuring unit and measuring range limit value are
displayed for all channels.
z
Pressing the [ + ] key again exits the Info Off Mode (or via timeout).
Calling the Quick Menu
z
In measuring mode, press the [ + ] key three times.
–
If functions in the quick menu are activated using the PC software Dräger
CC-Vision, you can select these functions using the [ + ] key. If no functions
have been activated in the quick menu, the instrument remains in measuring
mode.
Possible functions:
1. Bump Test Mode
2nd fresh air calibration
3rd Display and deletion of the peak values
z
Press the [ OK ] key to call the selected function.
z
Press the [ + ] key to cancel the active function and to switch to measuring
mode.
–
If no key is pressed for 60 seconds, the instrument returns automatically to
measuring mode.
1)
The fresh air calibration / zero point adjustment is not supported by the DrägerSensor Dual IR
CO
and the DrägerSensor IR CO
. A zero point calibration / adjustment of these sensors can
2
2
be conducted using the Dräger CC-Vision PC software. To do so, a suitable zero gas that is free
of carbon dioxide (e.g. N
) should be used.
2
1)