Vaisala HM70 - Manual (Page 56)

User's Guide ______________________________________________________________________
54 __________________________________________________________________ M210297EN-E
9. Remove the filter from the transmitter's probe and insert the
probe into the reference condition.
10. Press ADJUST to continue adjusting .
11. Select 1-point adjustment , press SELECT.
12. Press READY when the reading is stabilized in the reference
condition (takes about 30 minutes or more) . You can follow the
stabilization from the GRAPH display.
13. Enter correct reference value by using the arrow buttons. Press
OK .
14. Confirm by pressing YES.
15. Adjustment is done. Press BACK and EXIT to return to the
basic display.
16. Switch off the MI70 and detach the calibration cable.
2-Point Adjustment by Using a
Calibrator
Note that the difference between the two reference humidities shall be
at least 50 %. MI70 indicator is used now in communication.
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 lower reference humidity.
10. Press ADJUST to continue adjusting .
11. Select 2-point adjustment , press SELECT.
12. Press READY when the reading is stabilized in the first
reference condition (takes about 30 minutes or more) .
13. Enter correct reference value by using the arrow buttons. Press
OK .
14. Remove the probe and insert the probe into higher reference
humidity. You can follow the stabilization from the GRAPH
display (takes about 30 minutes or more).
15. Press READY when the reading is stabilized in the second
reference condition .