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Optical DO Calibration
The Optical DO sensor is calibrated by distilled water and known Optical DO value water. Proceed
as follows:
1. Select Optical DO from the Calibration. Lo Pt Raw or Hi Pt Raw will appear.
Press the ARROW keys to Lo Pt Raw to make the selection then press ENTER to calibrate
the low Optical DO range in zero oxygen water.
Press ENTER to proceed. Place the probe in the zero oxygen water.
After pressing ENTER, raw data from the Optical DO sensor will appear, wait until the
readings are stable and press ENTER.
2. Use ENTER key and arrow keys to Set Lo Val as 0 Optical DO.
3. If you proceed with the high range calibration, select Hi Pt Raw by using the arrow keys and
press ENTER.
Place probe in a 100% oxygen saturation water.
Press ENTER, the raw data is displayed.
Immerse the probe in a 100% oxygen saturation water and wait for the probe to reach a
constant raw Optical DO value.
Then press ENTER.
4.
Use ENTER key and arrow keys to Set Hi Val Optical DO value 100.
5. Select Done & Cal.
6. Press ENTER.
7. The Optical DO calibration is now complete.
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