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Input Calibration
168 UDA2182 Universal Dual Analyzer Product Manual January 2009
Step Action Screen
4
Press
Enter
Follow the prompts at the top
and bottom of the screen.
“Place probe in air”
The display will show the live
Dissolved Oxygen value.
Press Enter when ready”
5
Press
Enter
“Cal stability check”
This screen remains until the Air
Calibration is complete. At that
time the previous screen is
displayed indicating that the air
calibration is complete.
“Wait for cal complete”
6
“ Cal Complete”
This screen gives you an option
to exit or recalibrate.
Press ENTER to recalibrate.
Press EXIT to return to Input Cal
Screen.
7
If the calibration fails, an error
message will be displayed
across the bottom stripe of the
screen.
Error Messages
Readings Unstable
Cal Factor Underrange
Cal Factor Overrange
Refer to Table 12-2.
Air Calibration is not completed until both the probe temperature and the probe signal are
stable. If the probe has just been removed from a sample low in dissolved oxygen or with
temperature significantly different from the air temperature, it takes longer to reach stability
than if the probe were already near ambient conditions when calibration was initiated.