ABB 4630 Operating Instructions Manual page 17

Ph/redox (orp) analyzers
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...6.2.1 Operating Page
Continued from previous page.
l 0 0 0 .
% Slope Value
.
7 0 0
pH Check Value
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– – – – –
pH CALIBRATION
Slope Value:
a value between the programmed minimum % slope value (see
in the
Slope Value
Set Up Parameters Page
If the value is outside these limits the electrode system must be checked.
pH Check Value:
is displayed as an additional indication of electrode system condition; 7pH being the
optimum value for glass electrodes and 0pH for Antimony electrodes.
Advance to
PH Calibration Page
on page 25) and 105% should be displayed.
– see Sections 6.2.2 to 6.2.4.
6 OPERATION...
pH Calibration Minimum
15

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