Berthold BTwave LB 571-02, Operating Manual

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6 Start up and Calibration LB 571 BTwave
32
68847BA2 Rev.00, 10/2020
The moisture calculation parameters are optimized by the UI for best correlation
between the measured signals and the Lab-% values. The calculation parameters are
shown in the quadratic box on the right.
The moisture reading is based on multivariable density compensated measurement.
The calibration may be improved by using the below calculation methods:
Temperature : If material temperature range for the collected samples is big,
then temperature compensation should be used by ticking the
Tempereture check box.
Polyfit : If this is ticked parameter Coeff A will affect the calculation (value
different than 0).
Should not be used until the whole moisture range is covered by
the samples.
If material is quite homogenous and the whole moisture range is
covered by the samples, the parameter optimization may be used
without the Polyfit .
The statistics for the calibration is shown in the bottom right corner. These are as
follows:
error: RMSE (Root Mean Square Error) between the difference of Measured-%
and Lab-% of the samples.
steyx: Comparison between Measured-% and Lab-% of the samples using excel
function STEYX.
cor: Correlation between Measured-% and Lab-% of the samples using excel
function CORREL.
5. When parameter optimization is done, click Move Parameters to Pending
List … button marked with the arrow in the autocalibrator
6. Below view opens with the active material selected
Figure 25 Save parameters to pending list
7. Select calibrated material, write a comment and click
OK
.
8. UI opens Parameters History tab under the Parameters tab. See below fig-
ure.