empty vessel that is suitable for the percentage value, e.g.
distance from the sensor to the vessel bottom (dry adjustment or
adjustment without medium). Keep in mind that the max. level
must be below the radar antenna.
à Finally save your settings with [OK], the adjustment is finished.
To suppress fluctuations in the measured value display, e.g. caused
by an agitated product surface, an integration time can be set. This
time can be between 0 and 999 seconds. Remember that the reaction
time of the entire measurement will then be longer and the sensor will
react to measured value changes with a delay. In general, a period of a
few seconds is sufficient to smooth the measured value indication.
à Carry out your settings via the respective keys and save with [OK].
A linearization is necessary for all vessels in which the vessel volume
does not increase linearly with the level, e. g. with a cylindrical or
spherical tank. Corresponding linearization curves are preprog-
rammed for these vessels. They represent the correlation between the
level percentage and vessel volume. By activating the appropriate
curve, the volume percentage of the vessel is displayed correctly. If
the volume should not be displayed in percent but e.g. in l or kg, a
scaling can be also set.
à Carry out your settings via the respective keys and save with [OK].
Scaling means converting the measured value into a certain parameter
and unit. The linearized percentage value is the source signal which is
used as basis for the scaling. The indication can then show the volume
in litres e.g., instead of the percentage value. Indication values from
max. -99999 to +99999 are possible.
à Carry out your settings via the respective keys and save with [OK].
Meas. loop - Damping
Meas. loop - Lineariza-
tion curve
Meas. loop - Scaling
VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument 23
6 Setup with the integrated indicating and adjustment unit
36032-EN-091116
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