50
Maintenance
Open the test gas cylinder valve to let test gas flow over the sensor.
The currently displayed measured values start to flash.
The flashing stops after a static measured value has been reached.
The calibration is now carried out automatically.
The displayed measured values change to the values according to the gas supplied.
The automatic stability monitoring can be overridden by pressing the OK key. A
calibration then takes place immediately. If it is detected that no test gas has been
applied, the 1-button calibration will be aborted. The channels will then indicate »n/
a«. If only one sensor is taking part in the 1-button calibration, a calibration will be
performed in each case when the OK key is pressed.
When the calibration is completed
and the displayed measured values
have stabilized:
The display containing the current
gas concentration changes with the
display »OK«.
Press the key or wait for 5
seconds to quit the calibration.
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 1-button
calibration.
The fault message » « appears
and » « is displayed for the
respective sensor instead of the
measured value.
In this case, repeat the 1-button
calibration or carry out a single gas
calibration, refer to page 50.
If necessary, replace the sensor,
page 59.
02923999_01_en.eps
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OK
03023999_01_en.eps
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%LEL
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