Vaisala GMP231 - Manual (Page 84)

User's Guide _______________________________________________________________________
82 ___________________________________________________________________ M211501EN-C
1403-126
Figure 29 Selecting the Adjustment Mode
10. You will be prompted if you really want to adjust. Select Yes.
11. You are now in the 1-point adjustment screen. Allow the
measurement to stabilize and press Ready.
12. Enter the CO
2
concentration of the reference gas and press OK.
1403-125
Figure 30 Entering the Reference CO
2
Concentration
13. You will be prompted if you really want to adjust. Select Yes.
14. If the adjustment is successful, the MI70 will show the text
Adjustment Done, after which you will return to the adjustment
mode. At this point you can press Back and Exit to leave the
adjustment mode. The adjustment is now completed.
If the adjustment cannot be applied, the MI70 will show the text
Cannot adjust, possibly followed by a text stating the reason. A
possible reason for an adjustment failure is attempting to apply a
very large correction to the reading. See section Limits of
Adjustment on page 75.