Chapter 3 pH MEASUREMENT
3.2 Open pH Measurement Screen
36
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Electrode status indication
When the electrode sensitivity is still low after calibration, or when a malfunction occurs at
the preliminary check, the following display appears on the screen. When the sensitivity
returns to the normal range after the repeated calibration, this status display disappears.
Electrode status display
Display
Description
The electrode sensitivity has deteriorated. Wash
the electrode.
Electrode sensitivity: 90% to 93%
The electrode life is coming to the end. Wash the
electrode and repeat the calibration. When the dis-
play does not disappear even after the repeated
calibration, exchange the electrode.
Electrode sensitivity: 85 to 90%
The repeatability is over
±
0.05pH at the prelimi-
nary check. Wash the electrode.
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