Q
O
Z
N
O
o
Q
(9)
4
d
o
o
28
6.5 Calibration
Note: Calibration must be done in the following three occasions:
1. Before using new sensors or new meter.
2. When the sensor been used for a long time and cause a wide measuring result.
3. When reference temperature or temperature factor need to be changed.
Calibration step
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ru
DD
—
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1. In measurement mode, press
to enter calibration mode.
2. Dip the electrode into standard solution.
a
|
3. After you get a stable current value or the
is snowed, press 9
to adjust the value
figures to match with the standard solution. Adjustable range is +30% of the stable current value.
Press
to finish the calibration process.
4. The value of cell constant K indicates the status of the electrode.
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