YSI MultiLab 4010-2 - Manual (Page 45)

MultiLab 4010-2 ORP voltage
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AutoRead The Stability control function checks whether the measured values are stable
within the monitored time interval.
The minimum duration until a measured value is assessed as stable is the
monitored time interval. The actual duration is mostly longer.
ORP electrodes can be used to determine the relative ORP.
1. Connect the ORP electrode to the meter.
2. Prepare the reference solution for the determination of the reference
point.
3. Select the ΔU (mV display with .
4. Immerse the ORP electrode in the reference solution.
5. Display the potential of the current zero point with .
6. Press to measure the reference solution.
The measured value is checked for stability (automatic stability con-
trol). The display of the measured parameter flashes.
The measured potential is defined as the zero point.
or
Press to terminate the display of the zero point.
7. Rinse the ORP electrode and immerse it in the test sample.
The measured value is checked for stability (automatic stability con-
trol). The display of the measured parameter flashes.
8. Wait for a stable measured value.
The display of the measured parameter no longer flashes.
03.04.2013 08:00 Info
Measured parame-
ter Time interval Stability in the time interval
ORP 15 seconds Δ : better than 0.3 mV
Temperature 15 seconds Δ : better than 0.5 °C