12
5 Set up with the display and adjustment module
VEGAPULS 66 • Foundation Fieldbus
47151-EN-210621
100%
0%
0,5
m
(19.68
")
5
m
(196.
9")
2
1
3
Fig. 7: Parameterization example
1 Min. level = max. measuring distance
2 Max. level = min. measuring distance
For this adjustment, the distance is entered when the vessel is full
and nearly empty. If these values are not known, an adjustment with
other distances, for example, 10 % and 90 % is also possible. Starting
point for these distance specifications is always the seal surface of
the thread or flange.
The function " Echo curve memory" makes it possible to save the
echo curve at the time of setup. This is generally recommended, and
it is absolutely necessary if you want to use the Asset Management
functions. If possible, the curve should be saved with a low level in the
vessel.
With the adjustment software PACTware and a PC, a high resolution
echo curve can be displayed and used to recognize signal changes
during operation. In addition, the echo curve of setup can be dis-
played in the echo curve window and compared with the current echo
curve.
The following circumstances cause interfering reflections and can
influence the measurement:
•
High mounting nozzles
•
Vessel internals such as struts
•
Agitators
•
Buildup or welded joints on vessel walls
Diagnostics - Echo curve
memory
Additional settings - False
signal suppression
