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Input Calibration
January 2009 UDA2182 Universal Dual Analyzer Product Manual 147
Step Action Screen
6
Once the reading is stable
Press
Enter
“Change to Buffer 1 value”
Use
to change the value to
match the actual pH of the
Buffer 1 solution at its current
temperature.
“Enter to save, Exit to cancel”
7
Rinse the electrode thoroughly
with distilled or de-ionized
water.
8
Percent Theoretical Slope
Adjustment
Press
Enter
Follow the prompts at the top
and bottom of the screen.
“Place probe in Buffer 2”
The display will show the pH of
the buffer 2 solution as
measured by the electrode
system.
“Press Enter when stable”
9
Once the reading is stable
Press
Enter
“Change to Buffer 2 value”
Use
to change the value to
match the actual pH of the Buffer
2 solution at its current
temperature.
“Enter to save, Exit to cancel”
10
If the calibration fails, an error
message will be displayed
across the bottom stripe of the
screen.
Make necessary adjustments
and re-calibrate
Error Messages:
Buffer span too low
Slope (Percent Theoretical
Slope) underrange
Slope(Percent Theoretical
Slope) overrange
Solution Unstable
See Table 12-2 for definitions