Dräger X-am 5000 Notice D'utilisation page 17

If a fault has occurred during the fresh air calibration:
– The fault message » « appears and »
tive sensor instead of the measured value.
In this case, repeat the fresh air calibration. If necessary, have the sensor re-
placed by qualified personnel.
Calibrating the sensitivity for an individual measuring channel
– The span calibration can be carried out specifically for individual sensors.
– During the span calibration, the sensitivity of the selected sensor is set to the
value of the used test gas.
– Use a standard test gas.
Allowed test gas concentration:
Ex: 40 to 100 %LEL
O 10 to 25 vol. %
2
CO: 20 to 999 ppm
H S: 5 to 99 ppm
2
Test gas concentration of other gases: see Instructions for Use for the
respective DrägerSensors.
Connect the test gas cylinder with the calibration cradle.
Vent the test gas leaving the adapter into a fume cupboard or into the open
air (with a hose connected to the second connector of the calibration cradle).
Test gas must not be inhaled. Risk to health!
Observe the hazard warnings of the relevant safety data sheets.
Switch on the device and insert it into the calibration cradle.
Press the [ + ] key and keep it depressed for 5 seconds to call the calibration
menu, enter the password (password on delivery = 001).
Use the [ + ] key to select the single gas calibration function. The symbol for
span calibration » « flashes.
Press the [OK] key to start the channel selection.
– The display flashes the gas of the first measuring channel, e.g. » Ex - %LEL «.
Press the [OK] key to start the calibration function of this measuring channel,
or use the [ + ] key to select another measuring channel (O
ppm or CO - ppm, etc.).
– The calibration gas concentration is displayed.
Press the [OK] key to confirm the calibration gas concentration or use the
[ + ] key to change the calibration gas concentration and complete the proc-
ess by pressing the [OK] key.
– The measurement value flashes.
« is displayed for the respec-
CAUTION
- vol. %, H
2
Open the test gas cylinder valve to let gas flow over the sensor with a volume
flow of 0.5 L/min.
– The displayed, flashing measurement value changes to the value according
to the supplied test gas.
When the measurement value displayed is stable (after at least 120 sec-
onds):
Press the [OK] key to perform the calibration.
– The display containing the current gas concentration changes with the display
» OK «.
Press the [OK] key or wait about 5 seconds in order to complete the calibra-
tion/adjustment of this measuring channel.
– The next measuring channel may appear for calibration.
– After the calibration of the last measuring channel, the device changes to the
measuring mode.
Close the test gas cylinder valve and remove the device from the calibration
cradle.
If a fault occurred during the span calibration:
– The fault message »
respective sensor instead of the measured value.
In this case, repeat the calibration.
If necessary, replace the sensor.
Note on adjusting the Ex channel to nonane as the measured gas:
– When calibrating the Ex channel, propane can be used as a substitute for
the calibration gas.
– When using propane to adjust the Ex channel to nonane, the display must
be set to 2x the test gas concentration used.
Note on the use in underground mining:
– When calibrating the Ex channel to methane as the measured gas, the in-
dication on the instrument must be set to a value 5 % (relative) higher than
the test gas concentration used.
S -
2
« appears and » « is displayed for the
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