41
Maintenance
●
Press the
key to carry out the calibra-
tion of the selected measuring channel.
— The calibration gas concentration is dis-
played.
●
Press the [OK]
key to confirm the cali-
bration gas concentration or use the
[ + ]
key to change the calibration gas concen-
tration and complete the process by pres-
sing the
[OK]
key.
— The measurement value flashes.
●
Open the test gas cylinder valve to let test
gas flow over the sensor.
— The displayed, flashing measurement va-
lue changes to the value according to the
supplied test gas.
When the displayed value has stabilized
(after at least 120 seconds):
●
Press the
key.
— The display containing the current gas
concentration changes with the display
» OK «
.
●
Press the
key to quit the calibration of
this measuring channel.
— The next measuring channel is offered for
calibration.
— After the last measuring channel has
been calibrated/adjusted, the device swit-
ches to measuring mode.
●
Close the test gas cylinder valve and re-
move the device from the calibration cr-
adle.
If a fault has occurred during the span ca-
libration.
— The fault message »
« appears and
»
« is displayed for the respecti-
ve 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, pro-
pane 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.
OK
03623854
_
01
_
en.e
p
s
OK
OK
03723854
_
01
_
en.e
p
s
