Carrying Out Manual Bump Test - Dräger X-am 5000 Instrucciones De Uso

Carrying out manual bump test

The automatic function test with the Bump Test Station is described in the
Technical Handbook.
 Prepare a test gas cylinder, the volume flow must be 0.5 l/min and the gas
concentration must be higher than the alarm threshold concentration that is
to be tested.
 Connect the test gas cylinder with the calibration cradle (order no. 83 18 752).
Health hazard! Never inhale the test gas.
Observe the hazard warnings of the relevant Safety Data Sheets.
CSA requirement: carry out a bump test before use. It should be carried out in
the measuring range 25-50 % of the full scale value, whereby the displayed
measured value may deviate from the actual measured value by 0-20 %.
Accuracy may be corrected via calibration.
 Switch on the instrument and insert it into the calibration cradle – press
downwards until it engages.
 Open the test gas cylinder valve to let test gas flow over the sensors.
 Wait until the instrument displays the test gas concentration with sufficient
tolerance –
Ex: ±20 % of the test gas concentration
1)
O : ±0.6 vol. %
2
TOX: ±20 % of the test gas concentration.
– If the alarm thresholds are exceeded, the instrument displays the gas
concentration in alternation with » A1 « or » A2 « depending on the test gas
concentration.
 Close the test gas cylinder valve and remove the instrument from the
calibration cradle.
If the displays are outside of the above-mentioned ranges:
 Have the instrument adjusted by the service personnel.
1) During application of the Dräger mixed gas (order no. 68 11 130) the displays should be within
this range.
NOTICE
CAUTION
WARNING
1)
1)
To check the measured value response times, apply t90 test gas to the X-am
via the calibration cradle. Check the results in accordance with the information
in the table in the enclosed supplementary documentation (order no.
90 33 890) until 90 % of the end display is reached.
After the bump test (menu), the display shows a printer icon even if there is no
printer connected to the bump test station.
Calibration
Calibration may not be possible due to instrument and channel errors.
Dräger recommends using the extended bump test for cross calibrations
(Dräger X-dock instructions for use).
Carrying out the fresh air calibration
Calibrate the instrument to fresh air, free of measured gases or other interfering
gases. During the fresh air calibration the zero point of all sensors (with the
exception of the DrägerSensor XXS O
DrägerSensor XXS O , the display is set to 20.9 vol. % and with DrägerSensor
2
XXS CO to 0.03 vol. %.
2
The fresh air calibration / zero calibration is not supported by the
DrägerSensor XXS O . A zero-point calibration / calibration of this sensor can
3
be carried out using the Dräger CC Vision software. A suitable zero gas free
from ozone (e.g. N ) must be used.
2
 Switch on instrument.
 Press the [ + ] key 3 times, the symbol for fresh air calibration »
 Press the [OK] key to start the fresh air calibration function.
– The measured values flash.
When the measured values have stabilized:
 Press the [OK] key to perform the calibration.
– The display containing the current gas concentration changes with the
display » OK «.
NOTICE
NOTICE
NOTICE
and XXS CO ) are set to 0. With the
2 2
NOTICE
« appears.
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