Carrying Out A Mixed Gas Calibration - Dräger X-am 2800 Technical Manual

2. Connect the hose to the second connector on the calibration adapter to direct
the test gas to an exhaust or outside.
3. Insert the switched-on gas detector into the calibration adapter and press it
down until it locks into place.
4. Press
5. Enter and confirm the password.
6. Select and confirm single-gas calibration .
The first measuring channel is displayed and the measured gas flashes.
7. Use
8. Press
 The test gas concentration is displayed and flashes.
9. Press
concentration and confirm with
10.Open the test gas cylinder valve, the volume flow must be 0.5 L/min.
11. Wait until the displayed measured value is stable then confirm with
 The display containing the current gas concentration changes with the
12.Press
● Select
● Select
● Select
13.After successful single-gas calibration, close the test gas cylinder valve and
remove the gas detector from the calibration adapter.
Further steps
If an error occurred during single-gas calibration, the fault message X is displayed
and -- is displayed for the affected measuring channel instead of the measured
value. In this case, repeat the single-gas calibration or replace the sensor, if
necessary.
6.7.4

Carrying out a mixed gas calibration

Observe the following instructions for mixed gas calibration:
● All sensors which can be calibrated and are released by the Dräger CC-Vision
PC software are included in the multi-gas calibration.
● In the case of the span calibration, the sensitivity of the selected sensor is set to
the concentration value of the test gas used.
Permitted test gas concentration:
CatEx
O
2
Test gas concentration of other gasses:
Refer to the Dräger CC-Vision PC software
|
Technical manual
X-am
for approx. 4 s in measuring mode.
to select the desired measuring channel.
to start the single-gas calibration for the selected measuring channel.
OK
to confirm the test gas concentration, or use
OK
display OK.
.
OK
to confirm the measured value. The next measuring channel is
displayed for calibration, if necessary. After the last measuring channel has
been calibrated, the gas detector changes to measuring mode.
to discard the measured value and to return to the measuring
channel selection.
to return to the measured value.
®
2800
. The measured value flashes.
OK
The permitted test gas concentration is
displayed by the gas detector during sin-
gle-gas calibration of the sensitivity.
Maintenance
to change the test gas
.
OK
25