VEGA VEGABAR 83 Profibus PA - Operating Instructions - Manual (Page 40)

40
6 Set up with the display and adjustment module
VEGABAR 83 • Profibus PA
45037-EN-131107
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 per-
centage and vessel volume. The linearization applies to the measured
value indication and the current output.
Caution:
Note the following, if the respective sensor is used as part of an over-
fill protection system according to WHG:
If a linearization curve is selected, the measuring signal is no longer
necessarily linear to the filling height. This must be considered by the
user especially when adjusting the switching point on the limit signal
transmitter.
In menu item "Scaling" you define the scaling variable and the scaling
unit for the level value on the display, e.g. volume in l.
In menu item "Scaling (2)" you define the scaling format on the display
and the scaling of the measured level value for 0 % and 100 %.
In the menu item "Lock/unlock adjustment", you can protect the
sensor parameters against unauthorized modification. The PIN is
activated/deactivated permanently.
The following adjustment functions are possible without entering the
PIN:
•
Select menu items and show data
•
Read data from the sensor into the display and adjustment mod-
ule.
Caution:
With active PIN, adjustment via PACTware/DTM as well as other
systems is also blocked.
Setup - Linearization
Setup - Scaling (1)
Setup - Scaling (2)
Lock/release setup - Ad-
justment