Operating Manual

Chapter 3 Set up Level, Level Alarms, and Volume Accu-Wave
3-16 TN Technologies
actual volume is not zero at the zero level point, enter the correct value here. This menu
item is only displayed when you select the “other tank shapes or compound shapes” option
for the tank shape.
If you have selected one of the six basic shapes, but need to specify a non-zero volume for
the zero level point there are two options. If your tank shape is not a sphere, you can
specify “other tank shapes or compound shapes” and then specify the tank shape and
dimensions using the “Assign & setup tank segment” menu item described below.
Alternately you can enter a value for the “volume in tank when level reading = zero”
parameter via direct entry. The direct entry keyboard code for this menu item is 061003.
Assign & setup tank segment…
If you selected the “other tank shapes or compound shapes” option for the tank shape,
additional menu items will be displayed allowing you to “Assign & setup tank segment #.”
You may select from a larger set of pre-defined shapes, define the tank volume as a table
of volume and height (level) values, or define the tank volume as a polynomial expression
of height. You can define the tank using up to 8 segments where each segment can be
assigned a different shape.
The available tank shapes and associated dimensions are listed in the table below. Except
for the sphere (type 18) shape, the “Other Tank Shapes” include the “Basic Tank Shapes”
along with additional shapes. The tank shapes and associated dimensions are illustrated in
Figure 3.8 at the end of this chapter.
Other Tank Shapes
Tank Shape Required Dimensions
vertical cylinder (type 1) diameter
vertical rectangle (type 2) width, length
vertical conical (type 3) top diameter, bottom diameter
vertical sperical (type 4) top diameter, bottom diameter
vertical parabolic (type 5) top diameter, bottom diameter
rectangular top and bottom (type 7) width and length of top and bottom
slope bottom vert. cylinder (type 9) diameter, dimension C
any shape w/ vert. sides (type 10) area of shape
horizontal cylinder/flat ends (type 11) length, diameter
horiz. cylinder/domed ends (type 12) length (not including domed ends),
total length, diameter
domed end (type 14) width, diameter, bottom offset
pair of domed ends (type 15) width, diameter, bottom offset