39
Maintenance
Calibrating/adjusting the sensitivity for a
single measuring channel
— The span calibration can be carried out
specifically for individual sensors.
— In the case of 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:
● 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).
● Switch on the device and insert it into the
calibration cradle.
● Call the calibration menu, enter the
password and select the "span
calibration" function, page 16.
● Press the key to start the span
calibration.
— The display flashes the gas of the first
measuring channel, e.g. » Ex - %LEL «.
● Press the key to carry out the
calibration of this measuring channel.
or
● Use the key to select another
measuring channel (O
2
- vol. %, H
2
S -
ppm or CO - ppm).
Ex: 2.0 to 5 vol. % CH
4
corresponds
to 10 to 100 %LEL
O
2
10 to 25 vol. %
CO: 20 to 999 ppm
H
2
S: 5 to 99 ppm
ATTENTION:
Test gas must not be inhaled. Risk to
health!
Observe the hazard warnings of the
relevant Safety Data Sheets.
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0.5 L/min
03523854
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en.e
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OK
on
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on
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