VEGA VEGAPULS 56 Profibus PA - Manual (Page 61)

VEGAPULS 56 Profibus PA 61
Setup
The menu window for the adjustment of the
cylindrical tank opens.
• Choose the meas. unit, e.g. mm, that
should apply to the entered vessel dimen-
sions.
The following example shows how to enter a
cylindrical tank that is inclined by 3° and has
a cylinder length of 10000 mm and a diam-
eter of 5000 mm. The cylindrical tank has a
1500 mm wide, spherical form at the right
end and a dished form at the left.
Note:
In the bottom left corner in the menu window
"
Tank calculation“ you find the information "All
dimensions are internal dimensions“. Entering
a wall thickness is only necessary for the
calculation of the dished boiler end because
its mathematical calculation is based on the
outer dimension.
Above the information "All dimensions are
internal dimensions“, you will find two fields
with the percentage values 0 % and 100 %.
Here you can shift the 100 % line or the 0 %
line. In the example, the 100 % filling line was
defined at a distance of 650 mm from the
upper vessel edge (inside).
• Click to " Calculate Calculate Calculate Calculate Calculate“.
You will get the calculated linearisation table
after a brief processing interval. By means of
32 linearisation points, a function correlating
vessel volume to filling height is outputted.
The example vessel has a filling of 216561
liters at the 100 % line or of 216.6 m
3 . It is
possible to output the volume value in bar-
rels, gallons, cubic yards or cubic feet.