Vaisala Humicap HMW60U Guía de usuario descargar pdf (Pagina 57)

Chapter 9 ______________________________________ Calibration and Adjustment of Transmitters

VAISALA _______________________________________________________________________ 55

16. Give the higher reference humidity value by using the arrow

buttons. Press OK.

17. 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.

18. Adjustment is done. Press BACK to exit the adjustment mode

press EXIT to return to the basic display.

LiCl-NaCl Adjustment

This adjustment is done by using relative humidity references: 11.3 %

RH (LiCl) and 75.5 % RH (NaCl)

If you use humidity calibrator HMK15, please use the adapter fitting

(13.5 mm) on the measurement hole if you calibrate probes of

HMT334, HMT335, HMT337 and HMT338.

Follow the steps from 1 to 8 on page 52 and continue as follows:

9. Remove the filter from the transmitter's probe and insert the

probe into 11.3 % RH reference humidity.

10. Press ADJUST to continue adjusting.

11. Select LiCl-NaCl autom., press SELECT. Press OK to accept the

note telling about references.

12. Press READY when the reading is stabilized in the first

reference condition (takes about 30 minutes or more).

13. Remove the probe and insert the probe into 75.5 % reference

humidity. You can follow the stabilization from the GRAPH

display (takes about 30 minutes or more).

14. Press

READY when the reading is stabilized in the second

reference condition

15. Confirm the adjustment, press

YES (by pressing NO you

return to adjustment mode display and no changes are made).

16. Adjustment is done. Press

BACK to exit the adjustment mode

press EXIT to return to the basic display.

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Vaisala Humicap HMW60U Guía de usuario Pagina 57