Ecolab Versatronic Manuel D'utilisation page 389

Fig. 59: For temperature input: Touch button (1)
Fig. 60: To enter the pH of the buffer solution: Touch button (1)
1. Start the zero point calibration.
Device menu èCalibration èanalysis input for pH / ORP / NH3 Call zero point
calibration
2. If no temperature compensation is specified in the calibration presets, enter the
temperature of the buffer solution by hand.
If a temperature compensation is specified, the temperature of the buffer solution is
determined automatically. (See Fig. 59.)
3. Clean the pH electrode and immerse it in the buffer solution.
4. Input of the pH of the buffer solutionwithout buffer recognition:
Verify that the displayed "pH buffer 1" matches the pH of the buffer solution used. If
no buffer record table is specified, the value "pH buffer 1" is taken from the
calibration presets. This can be changed manually. (See Fig. 60.)
with buffer recognition:
For this condition, a buffer set table is selected in the calibre presets and the pH of
the buffer solution used is included in this buffer record table. If these conditions are
met, the pH of the buffer solution during calibration is determined automatically.
5. Wait for a stable reading display and confirm the result of the measurement with
"OK".
6. The system generates a summary log of the determined calibration values.
Acknowledge the log with "OK".
A failed calibration can be aborted at this point and discarded.
7. Select "Yes" to assume the determined calibration values and log the calibration.
Select "No" to discard them.
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Device menu
417102269 Rev. 2-08.2020