Operating Manual

Chapter 3 Set up Level, Level Alarms, and Volume Accu-Wave
3-14 TN Technologies
Note: Once you have set up the tank volume, volume is set as a default
measurement and is shown on the measurement display. To use volume to
drive a current output or an alarm, you must use the “Set up additional
measurements” menu (see Chapter 4) to assign volume to a specific
measurement number and to set up the parameters for the current output
or alarm.
Tank Shapes
The first step in setting up the tank volume is to define the tank shape. If your tank is one
of the six shapes listed in the table below, simply select the tank shape, select the units, and
then enter the dimensions of your tank. The required dimensions depend on the selected
shape as shown in the table. The tank shapes and dimensions are illustrated in , at the end
of this chapter.
Basic Tank Shapes
Tank Shape Required Dimensions
vertical cylinder (type 1) diameter
vertical rectangle (type 2) width, length
vertical cone (type 3) top diameter, bottom diameter
horizontal cylinder/flat ends (type 11) length, diameter
horizontal cylinder/domed ends
(type 12)
length (not including domed ends), total
length, diameter
sphere (type 18) diameter
Note: After you select a tank shape, the gauge will compute and display a value
for the volume. The indicated volume will be correct only if you have
entered all required dimensions.
If you did not set up level as the primary measurement, you will be asked
to enter the “Distance from the reference line to the zero-level” and the
“maximum level to be measured” in the “Set up Volume” menu.
If your tank does not fit any of these shapes, select “For other shapes or compound
shapes.” Additional menu items will be displayed allowing you to select other shapes,
define the tank as a combination of shapes, or to define volume as a table of volume vs.
height (level) data pairs, or as a polynomial expression of height.