VEGA VEGAFLEX 82 4 … 20 mA_HART two-wire Rod and cable probe With SIL qualification - Manual (Page 43)

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7 Set up with the display and adjustment module
VEGAFLEX 82 • 4 … 20 mA/HART two-wire
44222-EN-130823
Note:
A false signal suppression is only recommended with liquid applica-
tions.
A false signal suppression detects, marks and saves these false sig-
nals so that they are no longer taken into account for level measure-
ment.
This should be done with the lowest possible level so that all potential
interfering reflections can be detected.
Proceed as follows:
Enter the actual distance from the sensor to the product surface.
All interfering signals in this section are detected by the sensor and
stored.
Note:
Check the distance to the product surface, because if an incorrect
(too large) value is entered, the existing level will be saved as a false
echo. The filling level would then no longer be detectable in this area.
If a false signal suppression has already been created in the sensor,
the following menu window appears when selecting "False signal
suppression":
The instrument carries out an automatic false signal suppression
as soon as the probe is uncovered. The false signal suppression is
always updated.
The menu item "Delete" is used to completely delete an already cre-
ated false signal suppression. This is useful if the saved false signal
suppression no longer matches the metrological conditions in the
vessel.
With this menu item you safeguard the sensor parameters against
unauthorized or unintentional modifications.
To avoid possible errors during parameterization in a non-safe user
environment, a verification procedure is used that makes it possible
to detect parameterization errors reliably. For this, safety-relevant
parameters must be verified before they are stored in the device. In
normal operating condition, the instrument is also locked against
parameter changes through unauthorized access.
Release setup - adjust-
ment