IMKO SONO-VIEW Operating Instructions Manual page 18

1.1.1.2.1 1-Point Calibration
With this material calibration option, a linear equation (f (x) = mx + b) is calculated with the
dry density. So it is necessary to have the dry density of the measured material before
activating this option. A reference moisture content and the tp value (propagation time of the
radar signal) which can be measured or set at the point of the reference moisture. Even if a
polynomial of higher degree is useful for obtaining greater accuracy, the linear equation is
often sufficient to achieve very good results.
Note: To perform a 1-point calibration, you need a material sample as well as the dry density
of the material to be measured. The moisture value has to be determined with another
method like kiln drying or similar, before activating this calibration procedure.
Procedure:
In the next step, the tp value (radar signal time) has to be determined by a measurement with
the connected probe or by manual setting with pre-determined tp values.
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Manual SONO-VIEW Version 3_1
At the beginning of the calibration, the selected
calibration memory (01 - 15) has to be overwritten with
the /
setting and press the button
item.
The percentage reference moisture of the material to be
measured, must then be set with the
Press the button
button
In the following step, the dry density of the material to
be measured must be set with the
Press the button
button
buttons. Press the button
to move to the previous
to accept the setting and press the
to move to the previous item.
to accept the setting and press the
to move to the previous item.
2017-05-24
to accept the
/ buttons.
/ buttons.