Vaisala DRYCAP DM70 Guia do Utilizador descarregar pdf (Página 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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Vaisala DRYCAP DM70 Guia do Utilizador Página 30