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6 Set up with the display and adjustment module
VEGAPULS 68 • Foundation Fieldbus
36538-EN-170405
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.
Additional settings
In this menu item you select the measured variable of the system and
the temperature unit.
In this menu item, you define the unit of the Secondary Values 2
(SV2):
A linearization is necessary for all vessels in which the vessel volume
does not increase linearly with the level - e.g. a horizontal cylindri-
cal or spherical tank - and the indication or output of the volume is
required. Corresponding linearization curves are preprogrammed
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 in the menu item
"
Display
".
Diagnostics - Echo curve
memory
Additional adjustments -
Instrument units
Additional adjustments -
Unit SV2
Additional settings - Lin-
earization