Key Panel; Key Instruction; Key Function - CLEAN Instruments PH200 Operation Manual

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 .
5. If the Auto Lock Function is ON, the meter can lock the measured value after the reading had
stabilized and display . Press to unlock.
6. If the changed temperature is needed, you can refer to P-03 Temperature Offset.
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3 Key Panel

3.1 Key instruction

Short press: Short press means release the key once after pressing. (If there is no mark out below,
default it as Short press)
Long press: Long press means press the key for 3 seconds and release.
Hold: Hold means not release the key, used in adjusting data and accelerate after a certain time.
Not release the key until the value is set as needed.

3.2 Key function:

Key Description
Power on
ON/OFF backlight
Long press to Power off
Mode switch
Exit from current mode operation
Data setting
Enter into calibration mode
Long press to enter into parameter browsing
Freeze or unlock the displayed value
Store the displayed value into memory
Increment values or scroll through the next options available
Recall stored values from the memory
Decrement values or scroll through the next options available
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