Perform A Bump Test With The Bump Test Station - Dräger X-am 2800 Technical Manual

– A bump test can only be carried out if at least one sensor has been configured
for the bump test with the Dräger CC-Vision PC software (does not apply to
bump test with X-dock).
– The gas detector is switched on and warm-up phase 1 is complete.
– A suitable test gas cylinder is available, e.g. test gas cylinder (order number
68 11 130) with the following mixed gas ratios: 50 ppm CO, 15 ppm H
2.5 Vol% % CH4, 18 Vol% O
request)
WARNING
Health hazard from test gas
Breathing in of test gas can be harmful to health or lead to death.
► Do not inhale the test gas.
► Observe risks connected with the test gas, hazards notes and safety advice (see
for example safety data sheets, instructions on the testing media).
Dräger recommends a test gas concentration of <60 %LEL for CatEx sensors
and a measuring range of 0 % to 100 %LEL.
1. Connect the test gas cylinder to the calibration adapter (order no. 8318752).
2. Insert the switched-on gas detector into the calibration adapter and press it
down until it locks into place.
3. Call the bump test via the Quick menu. Failure to do so means that the bump
test is performed without documentation.
4. Open the test gas cylinder valve, the volume flow must be 0.5 L/min and the gas
concentration must be higher (lower with O
concentration that is to be tested.
5. Wait until the detector displays the test gas concentration with sufficient
tolerance.
 Ex: ±20 % of the test gas concentration
 O
 TOX: ±20 % of the test gas concentration
6. Close the test gas cylinder valve and remove the gas detector from the
calibration adapter.
7. If the concentrations have fallen below the A1 alarm thresholds, the gas detector
automatically switches back to measuring mode after 10 s.
Further steps
If the displays are outside of the above-mentioned ranges, have the gas detector
calibrated by service personnel.
6.5

Perform a bump test with the Bump Test Station

The Dräger CC-Vision PC software can be used to configure whether a quick or
advanced bump test should be performed.
Dräger recommends using the extended bump test for cross calibrations (see the
Dräger X-dock instructions for use).
|
Technical manual
X-am
: ±0.6 Vol%
2
®
2800
(other test gas cylinders can be added on
2
) than the alarm threshold
2
Maintenance
S,
2
21