VEGA VEGASON 51V…53V - Manual (Page 50)

50 VEGASON 51 V … 53 V
First of all a linear relation (a straight line) is
displayed.
In the field " Transfer measured value" the actual
level in percent of the adjusted meas. range
(meas. window) is displayed. You have ad-
justed the meas. range during the min./max.
adjustment to 0,500 … 3,400 m.
The user programmable linearisation curve is
generated out of linearisation points, the so
called value pairs. A value pair consists of
"
Linearised” (percentage value of the filling)
and " Percentage value" (percentage value of
the level relating to the meas. range).
If the linearisation points or value pairs of
your vessel are not known to you, you must
gauge the vessel by litres.
Gauging by litres
In the characteristics of the following figure
you see five linearisation points (0, 1, 2, 3,
and 4) or value pairs. Between the
linearisation points there is always a linear
interpolation.
Click to "
Indication in scaled values", to have
the adjusted meas. unit indicated on the y-
axis (left bottom part of the menu window).
Max.
Min.
100 % (0,500 m) correspond
to 1200 litres
Meas. range
0 % (3,400 m) correspond to
45,5 litres
Linearisation point 0 is at 0 % filling ( percent-
age value [%]), which corresponds to an
actual distance to the product surface of
3,400 m in the example (empty vessel) .
The volume value is hence 45,5 litres (rest
filling of the vessel).
Linearisation point 1 is at a filling level of 20 %
(20 % of the meas. distance of 0,500 m …
3,400 m). In our example there are 100 litres
at 20 % filling in the vessel.
Linearisation point 2 is at a filling level of
40 %. At this filling level there are 250 litres in
the vessel.
Linearisation point 3 is at a filling level of
80 %, where 1000 litres are in the vessel.
Linearisation point 4 is at a filling level of
100 % (level distance 0,500 m), where 1200
litres are in the vessel.
You can enter max. 32 linearisation points
(value pairs) per linearisation curve.
• Quit the menu with "OK".
• Confirm the message with "OK", and your
individual linearisation curve will be saved
in the sensor.
Set-up - Adjustment with PC on VEGAMET