40 Technical manual | X-am® 3500/8000
Maintenance
6.3 Perform bump test
The bump test can be performed as follows:
– Bump test with the wizard (quick bump test)
– Bump test with X-dock (quick or extended bump test)
Dräger recommends using the extended bump test for cross calibrations (Dräger
X-dock instructions for use).
X-am 8000: If the gas detection instrument is equipped with a PID sensor, Dräger
recommends not to use the Nonane tester (order no. 83 25 61) for the bump test
because of the long saturation time of the PID sensor.
6.3.1 Carrying out bump tests with the wizard
WARNING
Incorrect alarm behaviour!
A closed gas path causes incorrect measured values. This may cause alarms to be
triggered incorrectly.
► Never close the outlet of the calibration adapter.
Dräger recommends a test gas concentration of <60 %LEL for CatEx and IR
sensors and a measuring range of 0 % to 100 %LEL.
For bump tests with the wizard and the X-dock, the results are saved in the device
memory.
Requirements:
– 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.
– The gas detector is switched on and warm-up phase 1 is complete.
– The thread port for the pump adapter and calibration adapter must be clean.
– A suitable test gas cylinder is available, e.g. a test gas cylinder (order number
68 11 130) with the following mixed gas ratios: 50 ppm CO, 15 ppm H
2S,
2,5 vol. % CH4, 18 vol. % O
2
Other test gas cylinder can be added upon request.
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