VEGA VEGAPULS 65 (≥ 2.0.0 - ≤ 3.8) Profibus PA User Manual
Page 34
linear
Enter the requested parameter via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
Caution:
Note the following, if VEGAPULS 65 is used as part of an overfill
protection system according to WHG:
If a linearisation curve is selected, the measuring signal is no longer
compulsorily linear proportional to the level. This must be taken into
consideration by the user, particularly when adjusting the switching
point on the level switch.
High sockets or vessel installations, such as e. g. struts or agitators as
well as buildup and weld joints on the vessel walls cause interfering
reflections which can impair the measurement. A false echo storage
detects and marks these false echoes, so that they are no longer taken
into account for the level measurement. A false echo memory should
be created with low level so that all potential interfering reflections will
be detected.
Gating out of false signals
Change now?
Proceed as follows:
1
Move from the measured value display to the main menu by
pushing [OK].
2
Select the menu item "Service" with [->] and confirm with [OK].
Now the menu item "False signal suppression" is displayed.
3
Confirm "False signal suppression - Change now" with [OK] and
select in the below menu "Create new". Enter the actual distance
from the sensor to the product surface. All false signals in this area
are detected by the sensor and saved after confirming with [OK].
Note:
Check the distance to the product surface, because if an incorrect (too
large) value is entered, the existing level will be saved as false signal.
The filling level would then no longer be detectable in this area.
The menu item "Extended setting" offers the possibility to optimise
VEGAPULS
65 for applications in which the level changes very
quickly. For this reason, select the function "Quick level change > 1 m/
min.".
Gating out of false sig-
nals
Extended setting/Quick
level change
34
VEGAPULS
65 • Profibus PA
6 Set up with the indicating and adjustment module PLICSCOM
28447
-EN
-090305