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mV, ORP measurement
● Performing measurement
You can perform measurement in the measurement mode by immersing the pH
electrode in the sample. Also, you can use the automatic hold function to judge the
stability of the measured value. The automatic hold function has two modes, the auto
stability mode and the auto hold mode. For how to set the mode, refer to "Setting the
auto stability and auto hold function" (page 79).
1. Clean the electrode with pure water (or
deionized water) and wipe it with filter paper
or tissue paper.
2. Open the internal solution filler port of the
electrode.
If calibration is performed with the port closed,
the internal solution does not flow and the
measurement value is not stable. Make sure to
keep the port open during calibration.
3. Immerse at least 3 cm from the tip of the
electrode in the sample solution.
In order for the internal solution to flow into the
sample solution, make sure to immerse the liquid
junction in the sample solution surely.
Stability judgment automatically starts and the
mV icon blinks until the measured value
stabilizes. When the measured value stabilizes,
the mV icon changes from the blinking state to
the lit state, and the display is fixed to the
stabilized measured value.
38
Stabilized
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