AMI Trides
Maintenance
A-96.250.111 / 211019 51
6.7.2 Standard pH
Standard
pH Calibration
The ideal pH electrode has an offset of 0 mV at pH 7 and a slope of
59.16 mV/pH unit. Real electrodes differ from this ideal. Therefore,
pH electrodes are calibrated with two buffer solutions, of different
pH values.
.
To perform a standard calibration navigate to menu
<Maintenance>/<Calibration> and select <Standard pH>.
Press [Enter] and follow the dialog on the screen.
5 Enter the process value measured
with the calibrated comparative
electrode.
Use the [] or [] keys
to increase or decrease the
Process value.
6 Press [Enter] to confirm.
7 Press [Enter] to save.
The process value is saved and the
new Offset in mV is displayed.
3.1.1.1
Process pH
Current Value 7.78 pH
Offset -8.15 mV
Process Value 7.60 pH
Save <Enter>
3.1.1.1
Process pH
Current Value 7.60 pH
Offset y mV
Calibration successful
pH
14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
-59
59
-118
118
-177
177
-236
-295
-354
-413
mV
To Next Page
Loading...