Vega VEGAPULS 68 - Additional settings - Linearization

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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dene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