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Settings
Fig. 16: Setting the offset value
6.4
P4.0: Entering the absolute pressure (Wöhler FA 430 only).
When measuring at high altitudes, take the pressure into consideration to obtain a pre-
cise CO
reading. Before beginning to take measurements at high altitudes, enter the
2
absolute pressure of your location .
Fig. 17: Entering the absolute pressure
56
Using the Up and Down keys, set an offset
•
value between 0 and 12% RH.
Move to the next digit using the Down key. Set
•
this digit as described above.
•
To return to the P3.0 mode after completing
the setting, press the HOLD/MIN/MAX key.
In the P4.0 mode, press the HOLD/MIN/MAX
•
key to access the Absolute pressure setting
mode.
The preset absolute pressure is displayed in hec-
topascal (1013 hPa).
Using the Up and Down keys, set the absolute
•
pressure of the location where you are taking
measurements.
To return to the P4.0 mode after completing
•
the setting, press the HOLD/MIN/MAX key.
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