User Guide

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• Press the CAL key and the “~” indicator will blink until the reading is
stable.
• As soon as the reading is stable, the “CFM” indicator will start blinking.
Press the CFM key to confirm the “0.0%” D.O. reading.
• If the reading is not close to the selected value,“WRONG “ and
“WRONG ” will blink alternatively.
• If the reading is within the margins (±15%), the meter stores the value
(and adjusts the offset point). The meter will then proceed with the next
calibration point.
• Press the CAL key and the calibration process
is ended with only the zero of the calibrated
meter. For a two-point calibration do not press
the CAL key and follow the procedure below.
SLOPE CALIBRATION
It is suggested to perform the slope calibration in air.
• Rinse the probe in clean water to remove any residual zero oxygen
solution.
Note: If you did not perform the zero calibration procedure, press the CAL key
and then the UP key to select the 100% calibration value.
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During logging, you can check some information about the logged data.
Press the LOG key to display the current sample number (the number of
readings that have been stored in the current lot).
Press the RANGE key to display the measurement reading during the logging
mode.
Press the LOG key again and the primary LCD will show the current lot
number and the secondary LCD will display the current page number.
TO STOP LOGGING
To stop logging press the LOG and then CAL key.
The display will show the next lot number.