Operating Manual

Accu-Wave Chapter 3 Set up Level, Level Alarms, and Volume
TN Technologies 3-13
Example: Set up Low Limit Distance Alarm
Display Comments
Set up alarm 1
(Alarm point, etc.)→→
NEXT↓↓
Set up alarm 1 to be a high limit level alarm as
illustrated in Figure 3.5.
Press → to access the “Set up alarm” menu items.
←←Exit alarm 1 setup
Alarm 1 set point
3.00 ft dist
NEXT↓↓ HELP→→
Enter 3.0 followed by ↓ to enter the desired level for
the set point relative to the zero distance level. The
zero distance point was entered during setup of the
primary measurement. Press ↓ again to continue.
Alarm 1 clear based
on dead band
Chng to “clr point”→→
Continue as is.↓↓
Press → to select a dead band point configuration as
shown here. Then press ↓ to continue.
Alarm 1 dead band
2.0 ft dist
{Makes alarm “Low”
limit} NEXT↓↓ HELP→→
Enter 2.0 followed by ↓ to enter the desired level for
the clear point relative to the zero distance point. The
display indictes that this is a “Low” limit alarm. Press
↓ again to continue
Alarm 1: ft dist
is indicated by
controlling relay 1
NEXT↓↓ CHANGE→→
Select indicator for alarm 1. If relays are installed, the
default is “controlling relay 1.” Other selections are:
controlling relay 2 (or 3 or 4 if installed)
measurement #1 display flash
Zero current output 1 (or 2 if installed)
How to Set up Volume
The “Tank Volume Setup” portion of the “Set up Level, Level Alarms, and Volume” menu
defines how the gauge will calculate volume. Volume setup is optional. If you do not want
the gauge to calculate and display volume, simply scroll past the “tank volume setup”
menu.
The procedure for setting up tank volume depends on the shape of your tank. With the
“Volume setup” menu you can describe your tank by:
• selecting a tank shape from a list of pre-defined shapes,
• describing your tank as a combination of pre-defined shapes,
• setting up a “break” table for volume, a table which defines volume as a function
of the height (level of the process material) for up to 16 values of height, or
• defining volume as a polynomial (up to 6
th
order) expression of height.
The “Set up Volume” menu allows you to select the measurement units for reporting the
volume as well as the units for the tank dimensions. The units for the tank dimensions can
be different from the units selected for the primary measurement (level or distance).