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CALIBRATION
9. Press Confirm to accept the calibration point. The message “Storing” followed by “Calibration
completed” will be displayed.
10. Press OK to return to the calibration menu or Measure to return to the measurement screen.
Error Message
“Wrong standard” is displayed when the ORP input is not within
the acceptable range.
8.4. DISSOLVED OXYGEN CALIBRATION
There are three options available:
% DO Saturation: The user can perform a one or two-point calibration using 100 % and 0 %
saturation or a one-point calibration using a custom solution (50 to 500 %
saturation).
DO Concentration: The user can perform a single point calibration using a custom point.
Restore Factory Calib.: The user can restore the factory calibration if a new sensor has been installed.
Note: When the % DO range is calibrated, the DO concentration range is also calibrated, and
vice versa.
The accuracy of dissolved oxygen measurement is directly related to the sensing surface cleanliness
and calibration technique. Oily coatings and biological contaminations are the primary cause of
calibration drift.
A standard solution or a reference DO meter may be used to compare readings during calibration.
Note: If the tutorial mode is enabled, press Tutorial and follow the messages on the screen.
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