Orp Automatic Calibration - Dostmann pH 7 Vio Manuel D'utilisation

The table below shows the setup menu structure for the ORP parameter; for each program there are the
options that the user can choose and the default value:
Program Description
P2.6 CALIBRATION DATA
P2.8 RESET SETTINGS
P2.9 TEMPERATURE CAL
P2.6 Calibration data
Access this menu to get information on the last calibration performed. The screens with the sensor offset
value and the temperature at which the calibration was performed will scroll on the display.
P2.8 Reset of the ORP Parameter
If the instrument does not work perfectly or incorrect settings have been made, confirm YES
with the key to return all the parameters of the ORP menu to the default settings.
P2.9 Temperature calibration
All the instruments in this series are pre-calibrated for a correct temperature reading. However, if a
difference between the measured and the real one is evident (usually due to a probe malfunction), it is
possible to perform an offset adjustment of + 5°C.
Use the keys and

• ORP automatic calibration

Automatic calibration with 475 mV.
• In ORP measurement mode
The string "POINT ORP 475" appears on the display; the device requires 475 mV as calibration point.
•
• Rinse the electrode with distilled water and gently dab it with paper towel. Dip the electrode in the
475 mV Redox buffer solution.
When the solution is recognized and the signal is stable, the red stripes are replaced by the stability
•
icon .
Press the key
•
• The actual measured value flashes on the display and then the beaker icon
bottom left, indicating that the instrument is calibrated. The instrument automatically returns to
measure mode.
ATTENTION: Before proceeding with the sensor calibration operations, carefully consult
the safety data sheets of the substances involved:
Redox standard solutions.
•
• STORAGE solution for ORP electrodes.
• Filling solution for Redox electrodes.
Series 7 Vio ENG Version 2.0 April 2020
-
YES – NO
YES – NO
to correct the temperature offset value and confirm with
press the key
as indicated by the string "PRESS OK".
23
Options Factory Default Settings
to enter the calibration mode.
-
NO
-
.
appears at the
EN