CLEAN Instruments PH200 Operation Manual page 41

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7.5 Measurement Mode
1. You can first set the meter per your request. Otherwise, the setting will be factory defaults.
2. Before each measuring, first lay aside the electrode for around 15mins to fully activate the
sensor after the electrode is connected with the meter.
3. After power on, press to select the operation mode (% or mg/L).
4. Immerse the electrode in the solution and stir gently. The measuring mark will twinkle, You can
read the value once the data is stabilized and shows the stable symbol A
OLD
5. If the Auto Lock Function is ON, the meter can lock the measured value after the reading had
stabilized and display C . Press to unlock.
6. If the changed temperature is needed, you can refer to P-03 Temperature Offset.