- If the value for dissolved oxygen in the liquid exceeds 20 mg/l, the LCD
indicates „- - - -“.
- At the same time the temperature of the measured liquid is shown in the
lower section of the display. You can switch the temperature display
between C° and F using the „°C/°F“ button.
- Turn the device off after measuring by pressing „POWER“.
- To ensure that the gauge will work over a long period of time, please clean
the electrode with distilled water after each measurement.
Hold function
With the hold function you can „freeze“ the currently measured value. To acti-
vate the hold function, press the „HOLD“ key during measurement. The value
measured at the time of activation is now shown on the display until you press
„HOLD“ again. If the hold function is active, the display reads „HOLD“.
Min/max function
The DO-100 can store the respective smallest (min) or greatest (max) mea-
sured value.
- To activate it, press the button“REC. MAX./MIN.“ once. The display
reads „REC“. The gauge now stores the greatest and the smallest mea-
sured value.
- To call up the greatest measured value, press „REC. MAX./MIN.“ until „REC
Max“ appears on the display. The measured value shown now is the greatest
measured value that occurred during measurement.
- To call up the smallest measured value, press „REC. MAX./MIN.“ until
„REC Min“ appears on the display. The measured value shown now is the
smallest measured value that occurred during measurement.
- To quit min/max measurement, press „REC. MAX./MIN.“ for 2 seconds.
The display returns to the currently measuredvalue.
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