17
5 Set up the sensor with the display and adjustment module
VEGAPULS SR 68 • Modbus and Levelmaster protocol
47164-EN-180226
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 sockets
•
Vessel internals such as struts
•
Agitators
•
Buildup or welded joints on vessel walls
Note:
A false signal suppression detects, marks and saves these false
signals to ensure that they are ignored in the level measurement.
This should be done with the lowest possible level so that all potential
interfering reflections can be detected.
Proceed as follows:
1. Select with
[->]
the menu item "
False signal suppression
" and
confirm with
[OK]
.
2. Confirm 3-times with
[OK]
and enter the actual distance from the
sensor to the product surface.
3. All interfering signals in this range are detected by the sensor and
stored after being confirmed with
[OK]
.
Diagnostics - Echo curve
memory
Additional settings - False
signal suppression
