VEGA VEGABAR 64 4 … 20 mA_HART User Manual
Page 39
A
linearization is necessary for all vessels in which the vessel volume
does not increase linearly with the level - e. g. with a cylindrical or
spherical tank - and the indication or output of the volume is required.
C
orresponding 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".
L
inearisation curve
linear
E
nter the requested parameter via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
Caution:
N
ote the following, if VEGABAR 64 is used as part of an overfill
protection system according to WHG:
I
f 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.
T
his function enables reading out parameter adjustment data as well
as writing parameter adjustment data into the sensor via the indicating
and adjustment module. A description of the function is available in the
operating instructions manual "Indicating and adjustment module".
T
he following data are read out or written with this function:
l
M
easured value presentation
l
A
djustment
l
D
amping
l
L
inearisation curve
l
S
ensor-TAG
l
D
isplayed value
l
D
isplay unit
l
S
caling
l
C
urrent output
l
U
nit of measurement
l
L
anguage
T
he following safety-relevant data are not read out or written:
l
SIL
l
HART
mode
l
PIN
l
A
pplication
Linearisation curve
Copy sensor data
VEGABAR
64 • 4 … 20
mA/HART
39
6 S
et up with the indicating and adjustment module PLICSCOM
27525
-
EN
-081209