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Span calibration
1. Place the calibration tank with Span calibration solution beside the device.
2. Connect the tank to the calibration inlet of the device.
3. Press the SPAN VALUE button ([x.xx]) on the pHCAL. screen.
The span calibration value input screen is displayed.
4. Enter the span calibration value using the numerical key pad and press [SET].
Input range: pH 2.00 to pH 12.00
Tip
[CLEAR]: Clears the whole value.
[BACK]: Deletes the rightmost number of the value.
The screen returns to the pHCAL. screen.
5. Open the valve of the calibration tank.
6. Press [SPAN].
A confirmation screen is displayed asking whether to start calibration.
7. Press [YES] to start span calibration.
The screen shows that the calibration is in progress.
[x.xx]
4 CALIBRATION
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