Vaisala HMT120 - Manual (Page 58)

User's Guide _______________________________________________________________________
56 ___________________________________________________________________ M211244EN-B
0505-185
Figure 18 Example of the MI70 Adjustment Menu
11. Press READY when the reading has stabilized in the reference
condition. This may take 30 minutes or more. You can follow
the stabilization from the GRAPH display.
0505-186
Figure 19 Example of the MI70 Adjustment Mode Graph
Display
12. Enter the correct reference value with the arrow buttons. Press
OK .
13. Confirm the adjustment by pressing YES .
14. The adjustment is done. Press BACK and EXIT to return to the
basic display.
15. Turn off the MI70 and detach the connection cable.
Two-Point Adjustment Using a Calibrator
Note that the difference between the two reference humidities must be at
least 50 %. MI70 indicator is used now only as a terminal for visualizing
and setting the transmitter's RH reading.
Follow steps 1 to 7 on page 54 and continue as follows:
8. Remove the filter from the transmitter's probe and insert the
probe head into the lower humidity reference condition.
9. Press ADJUST to continue adjusting.
10. Choose 2-point adjustment from the MI70 adjustment menu and
press SELECT .
11. Press READY when the reading has stabilized in the first reference
condition (may take 30 minutes or more). You can follow the
stabilization from the GRAPH display.
12. Enter the correct reference value in the first condition with the
arrow buttons. Press OK .