Operating Manual

Accu-Wave Chapter 4 Set up Additional Measurements
TN Technologies 4-7
Do or Do Not Display
Use this menu item to select whether to display the measurement. Normally, any
measurement you set up is automatically displayed. If you select “Do not display,” the
measurement is not displayed, but you can still use the measurement to drive alarms or
current output.
For example, if the volume measurement has been set up, the volume readout will be
displayed by default. It is possible to disable the display of the volume readout, but to still
have the volume measurement enabled to drive an alarm. Use the “Assign & set up /
Modify measurement #” menus to assign volume to a measurement number, and set up the
alarm as described above. Then set the “Do / Do not display measurement #” menu item to
“Do not” to disable the display of the volume measurement. (The signal strength
measurement display can be disabled in a similar manner.)
Display Scaling
A maximum of 4 numeric digits and a decimal point (5 characters total) are available on
the 4-line, 20 character/line measurement readout display. The menu items described in
this section allow you to scale the displayed readout values, so that values greater than
9999 or less than –9999 can be accurately displayed.
As an example, if you set up a volume measurement and expect readings between 30,000
and 40,000 liters, you can use the display scaling menu items to scale the displayed
volume to read in the range 30.00 to 40.00. In this example, the displayed value equals the
measured value (liters) divided by 1000. Thus, the units of the displayed value would be
kiloliters. Display scaling does not affect the units displayed for the readout; however, you
can set up a custom units message.
Note: The following menu items are displayed unless the measurement has been
assigned to a current output (see Current Outputs on page 6-1). If a
current output has been assigned, the “Meas # reading for 20.00 mA
ouptut” and “Meas # reading for 4.000 mA output” menu items for setting
up the current output are displayed. (The “Meas # reading” menu items are
displayed by default for the primary mesaurement, see page 3-2).
Expected reading values and display scaling only affect the readout. They
do not affect the measurement itself. The actual unscaled measurement
values are used for any alarms you assign to this measurement.
Highest Expected Reading
If you expect the maximum measurement readout to exceed four digits (value greater than
9999), enter an estimate of the maximum measurement value in the “Highest expected
reading” menu item. If you set a highest expected reading value of 10,000 or greater (more
than four digits), three additional menu items will be displayed allowing you to set up
display scaling so the gauge’s display will be meaningful throughout the expected range.
The value for the highest expected reading is not critical, just pick a convenient number
with the correct order of magnitude. If the actual measurement happens to exceed the range