Vaisala GMP231 - Manual (Page 82)

User's Guide _______________________________________________________________________
80 ___________________________________________________________________ M211501EN-C
7. To proceed with the adjustment, select the CO
2
(I) parameter in the
Select Quantity screen.
In the Select Quantity screen you can also view the currently used
compensation values, and the Last adjustment date information.
You can update the date and text using the CDATE and CTEXT
commands on the serial line.
8. You may be prompted to check the environmental settings of the
reference probe before proceeding. Press Yes to check the settings
and Exit when you have checked and corrected the settings.
9. The adjustment mode is now active, and you can see the measured
CO
2
readings and their difference on the screen. Allow the
measurement to stabilize. To proceed with the adjustment, press
Adjust.
1403-134
Figure 25 Comparing Readings in MI70 Adjustment Mode
10. Select To same as CO
2
(II).
1403-142
Figure 26 Selecting the Adjustment Mode
11. You will be prompted if you really want to adjust. Select Yes.
12. 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.