A-96.250.211 / 171121
AMI Sodium P
Maintenance
76
6.10. Calibration
CAUTION
Incorrect measurement
If the automatic regeneration option is installed, make sure that
no automatic regeneration is running when starting the pH pro
-
cess or sodium standard calibration. This would falsify the result
of the calibration.
When starting the calibration, you first have to perform the pH cali
-
bration and then the sodium calibration! The sodium measurement is
dependent on the pH value.
6.10.1 pH Process Calibration
You need a high quality pH meter to do the correction. We recom
-
mend using a Chematest series instrument with a pH electrode. The
handheld pH meter must be calibrated correctly.
Navigate to menu <Maintenance>/<Calibration>/<Process pH>.
The signal outputs and alarms are on hold.
1
Stop the sample flow by swinging the standard bottle holder half
-
way upwards.
2
Take the sodium electrode out of the flow cell and insert the pH
electrode of your hand held pH meter instead.
3
Wait until the value of your instrument is stable.
4
Press [Enter].
5
Enter the correct value with the
[
] or [
] key.
Process pH
Offset
0.33 mV
Save
<Enter>
Process Value
10.78 pH
3.1.2.4
Current Value
10.78 pH
Process pH
Current Value
10.78 pH
Offset
0.33 mV
Save
<Enter>
Process Value
10.70 pH
3.1.2.4
