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AMI Phosphate-II
Maintenance
6.6.
6.6.1
A-96.250.641 / 290121
Process Calibration
The process calibration is based on a comparison measurement of
the Instrument with an external high precision instrument. A process
calibration can only be performed if the instrument has finished at
least one valid measurement.
Consider that the accuracy of the process calibration depends on the
following factors:
The time between taking a sample and its measurement
should be as short as possible to avoid contamination of the
sample with unknown substances.
Sampling should be done as close as possible on the location
of the measurement.
The sample container must be cleaned well.
The accuracy of the measuring instrument.
Under certain circumstances a calibration is more precise than a
process calibration.
Start the Process Calibration
Prozesscal.
Current Value
2.29 ppm
Slope
Process value
2.35 ppm
<Enter> to save
Prozesscal.
Current Value
2.35 ppm
Slope
Process value
2.35 ppm
Calibration Successful
<Enter> to continue
Possible error messages:
Slope error
Current value invalid
If a slope error occurs, the slope value is not saved. If one of these
errors occurs proceed as follows: Repeat the process calibration and
avoid possible sources of error.
1 Navigate to menu 3.2
3.2.5
<Maintenance/Process cal.
2 Press [Enter]
0.96
3 Enter the measured comparison
process value.
4 Press [Enter] to save the value.
3.2.5
The slope is recalculated and
displayed.
0.98
43
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