2 calibration with manual buffer entry, Calibration – Hach-Lange SI792 P, SI792x P, SI792x P-FF, SI792x P-PA User Manual User Manual
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Calibration
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first buffer solution. When complete, the slope (%) and offset
(mV) of the probe (based on 25 °C) will be displayed.
6. Press
ENTER
,
ENTER
to return to the measurement mode. The
HOLD mode will remain active for 20 seconds.
7. Remove the probes from the buffer, rinse and return to the process.
8.1.1.2
Calibration with manual buffer entry
For calibration with manual buffer specification, the pH value of the
buffer solution at the proper temperature must be entered. This
calibration allows for calibration with any buffer solution.
Be sure that manual calibration is selected in the configure, cal menu
(
).
1. Press
CAL
, enter passcode: 1100,
ENTER
. The display will show
CAL1.
2. Remove the pH and temperature probes from the process. Clean
the probes and immerse in the first buffer solution (any order).
Briefly stir the solution with the probes.
3. Press
ENTER
. Use the
UP ARROW
and
RIGHT ARROW
to edit the
displayed pH value to match the pH of the buffer solution at the
selected temperature.
4. Press
ENTER
. Measurement of the buffer solution will begin. When
measurement is complete, the display will show CAL2.
5. Complete a one-point calibration or start a two-point calibration:
•
One-point calibration: press
CAL
to end the calibration. The
slope (%) and offset (mV) of the probe (based on 25 °C) will be
displayed.
•
Two-point calibration: immerse the probes in the second buffer
solution. Press
ENTER
. Edit the displayed pH value to match the
second buffer solution and press
ENTER
. Measurement of the