Vaisala DM70 - Manual (Page 30)

USER'S GUIDE____________________________________________________________________
Turning off Automatic Auto-Calibration
NOTE If the automatic auto-calibration is turned off, the auto-calibration
should be started when starting measuring after the probe has not
been used for a while and always at least once every hour.
The automatic auto-calibration can be turned off as follows:
1. Open the menu by pressing Open.
2. Select Settings and press .
3. Select Measurement settings and press .
4. To turn off the automatic auto-calibration, press
Off. To reactivate the automatic auto-calibration, press
On.
5. To return to the basic display, press Exit.
Manual Auto-Calibration
To check that auto-calibration has taken place for obtaining the most
accurate measurement in a very dry environment, you can auto-
calibrate manually before measuring as follows:
1. Open the menu by pressing Open.
2. Select Functions and press .
3. Select AutoCal and press Start.
4. If you want to start auto-calibration, press Yes. If the auto-
calibration conditions are not fulfilled, a note appears on the
display informing that the calibration cannot be made or that a
new attempt will be made later.
5. When the auto-calibration is completed, the display returns to
the basic display automatically.
Auto-calibration takes about 2 minutes. When the auto-calibration is
in progress, an estimate of the measurement readings may appear on
the display. Messages concerning the remaining auto-calibration time
are shown periodically. See Figure 9 on page 29.
NOTE If it is too humid, auto-calibration will not start.
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