VEGA VEGAPULS 45 VBUS - Manual (Page 60)

60 VEGAPULS 42, 44 and 45 – VBUS
Adjustment with the PC on the signal conditioning instrument
• Choose the "
Measuring unit", which should
be used for the input of the vessel dimen-
sions, e.g. mm.
The following example shows a cylindrical
tank is inclined by 3° and has a length of
10000 mm and a diameter of 5000 mm. The
cylindrical tank has a 1500 mm wide, spheri-
cal form at the right end and a dished end at
the left.
In the bottom left corner in the menu window
"
Tank calculation" you find the information "All
dimensions are internal dimensions".
Entering the wall thickness is not necessary
for the calculation of the dished boiler end as
its mathematical calculation is based on the
outer dimension.
The calculation program calculates the vessel
volume by means of the inner dimensions of
the vessel. Above the information "
All dimen-
sions 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 (inner).
• Click to
"Calculate".
You will get the calculated linearisation table
after a short calculation time. 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 216.6 m
3 . It is possi-
ble to output the volume in barrels, gallons,
cubic yards or cubic feet.
There is a linear interpolation between the
linearisation points.
• Click to
"OK" and you are again in the menu
window " Tank calculation".
• Again click in the menu window " Tank cal-
culation" to
"OK" and you are in the
linearisation menu.