VEGA VEGASON 61 Foundation Fieldbus - Manual (Page 28)

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6 Set up with the display and adjustment module PLICSCOM
VEGASON 61 • Foundation Fieldbus
28790-EN-130417
generation, material cones and echoes from the vessel wall (with
solids). To adapt the sensor to these different conditions, you should
first select "Liquid" or "Solid".
Medium
Liquid
With solids, you can also choose between "Powder/Dust", "Granular/
Pellets" or "Ballast/Pebbels".
Through this additional selection, the sensor is adapted perfectly to
the product and measurement reliability, particularly in products with
poor reflective properties, is considerably increased.
Enter the requested parameters via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
Apart from the medium, the vessel shape can also influence the
measurement. To adapt the sensor to these measuring conditions,
this menu item offers different options depending on whether liquid
or bulk solid is selected. With "Liquids" these are "Storage tank",
"Stilling tube", "Open vessel" or "Stirred vessel", with "Solid", "Silo" or
"Bunker".
Vessel form
Storage tank
Enter the requested parameters via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
To suppress fluctuations in the measured value display, e. g. caused
by an agitated product surface, a damping can be set. This time can
be between 0 and 999 seconds. Keep in mind that the reaction time of
the entire measurement will then be longer and the sensor will react
to measured value changes with a delay. In general, a period of a few
seconds is sufficient to smooth the measured value display.
Damping
0 s
Enter the requested parameters via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
A linearisation is necessary for all vessels in which the vessel volume
does not increase linearly with the level - e.g. in a horizontal cylindri-
cal or spherical tank - and the indication or output of the volume is
required. Corresponding linearisation curves are preprogrammed for
these vessels. They represent the correlation between the level per-
centage and vessel volume. By activating the appropriate curve, the
volume percentage of the vessel is displayed correctly. If the volume
Vessel form
Damping
Linearization curve