Test Gases; Perform Bump Test; Carrying Out Bump Tests With The Wizard - Dräger X-am 8000 Gebrauchsanweisung

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en Maintenance
1) To ensure optimal functional integrity, particularly at temperatures
below 0 °C, Dräger recommends replacing the sensor after 3 years
(from date of manufacture). 3 years corresponds with approx. 6000
operating hours when used very frequently. The age of the sensor can
be determined from the serial number, refer to the additional docu-
mentation enclosed with the gas detector (part number 90 33 655).
Replacing, retrofitting or removing sensors, see technical
manual.
5.3

Test gases

Test gas properties (e.g. relative humidity, concentration) can
be found in the relevant sensor data sheet.
The relative humidity of the test gas is not relevant for O
sensors.
Different test gases are used depending on the type of
calibration.
5.4

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 detector 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.
For bump tests with the wizard and the X-dock, the results are
saved in the device memory.

5.4.1 Carrying out bump tests with the wizard

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).
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.
A bump test with the wizard is always carried out with the
measured gas configured on the gas detector.
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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
18 vol. % O
2
Other test gas cylinder can be added upon request.
2
To carry out a bump test with the calibration adapter:
1. Mount the calibration adapter to the gas detector. Make
sure that both guide pins are in the correct grooves.
Alternatively the pump adapter can be used with an on-
demand valve.
2. Connect the hose to the test gas cylinder and the inlet on
the calibration adapter.
3. If needed, connect a second hose (max. length: 2 m) to
the outlet on the calibration adapter to direct the test gas
to an exhaust or outside. Make sure that these is sufficient
ventilation in room or vehicles.
4. Open the bump test (depending on the configuration).
a. Select
using the Dräger CC-Vision PC software).
b. > Login
Enter and confirm the password.
Select Maintenance > Bump test.
5. Open the valve on the test gas cylinder, the volume flow
must be 0.5 /min and the gas concentration must be
higher (lower with oxygen) than the alarm threshold
concentration that is to be tested.
S, 2,5 vol. % CH4,
2
> Maintenance > Bump test (if configured
Instructions for use
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X-am 8000