Vaisala HMP228 Guida Utente Scaricare il pdf (Pagina 46)

User's Guide _______________________________________________________________________

44 ____________________________________________________________________M210498en-A

1. When adjusting both relative humidity and temperature, please make

the temperature adjustment first.

2. Check that the MM70 is switched on.

3. Take out the screw from the probe handle to expose the calibration

button. Press the button with a small screwdriver. When pressing the

button, indicator turns to adjusting mode.

4. Press OK to start the adjustment mode.

5. Select RH, press SELECT.

6. Press YES to check the environmental settings, to continue directly

adjustment press

NO.

7. Now the adjustment mode is on, press ADJUST to select the

adjustment method.

8. Select 2-point adjustment, press SELECT. Press OK to continue.

9. Set the probe to a lower reference relative humidity. If using

HMK15 calibrator, use the adapter fitting (13.5 mm hole).

You can follow the stabilization from the GRAPH display. Press

READY when the reading is stabilized.

10. Give the lower reference humidity value by using the arrow buttons.

Press OK.

11. Set the probe to the higher reference humidity. Press READY when

the reading is stabilized. You can follow the stabilization from the

GRAPH display.

12. Give the higher reference relative humidity value by using the arrow

buttons. Press

OK.

13. Confirm the adjustment, press YES (by pressing NO you return

to adjustment mode display and no changes are made). If the

difference between two references is less than 50 %, adjustment can

not be done.

14. Adjustment has been carried out. Press BACK to exit the

adjustment mode press EXIT to return to the basic display.

15. Replace the screw onto calibration button.

You can attach a sticker on the calibration button screw to seal the

calibration.

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Vaisala HMP228 Guida Utente Pagina 46