Vaisala HUMICAP MM70 Guide de l'utilisateur télécharger pdf (Page 44)

USER'S GUIDE____________________________________________________________________

4. Wait until the reading is stabilized (takes about 30 minutes).

You can follow the stabilization from the graph display, by

pressing the GRAPH key.

5. Press the READY key when the value is stabilized in the

reference humidity.

6. Enter the correct humidity value by using the arrow keys. Press

the OK key.

7. Confirm by pressing the YES key.

8. To return to the basic display, first press the BACK key, then

the EXIT key twice.

2-point Relative Humidity

Adjustment by Using a Calibrator

You can use Vaisala humidity calibrator HMK15 in calibration and

adjustment. Note that the difference between the two reference

humidities should be at least 50%. MI70 indicator is working as a

communicator in the calibration procedure. When using this

adjustment method, start with the steps 1 through 12 in the section

Calibration and Adjustment of HMP228 Series Transmitters on page

40. Then proceed as follows:

1. Insert the transmitter probe to the first reference humidity.

2. Press the ADJUST key.

3. Select 2-point adjustment. Press the SELECT key.

4. Wait until the reading is stabilized (takes about 30 minutes).

You can follow the stabilization from the graph display, by

pressing the GRAPH key.

5. Press the READY key when the value is stabilized in the first

reference humidity.

6. Enter the first referenc humidity value by using the arrow keys.

Press the OK key.

7. Insert the transmitter probe to the second reference humidity.

8. Wait until the reading is stabilized (takes about 30 minutes or

more). You can follow the stabilization from the graph display,

by pressing the GRAPH key.

9. Press the READY key when the value is stabilized in the second

reference humidity.

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Vaisala HUMICAP MM70 Guide de l'utilisateur Page 44