Operating Manual

Chapter 3 Set up Level, Level Alarms, and Volume Accu-Wave
3-4 TN Technologies
“Set up Level” Menu (continued)
Display Comments
If the primary measurement is distance, the following two menu items are shown.
Distance REF LINE to
zero distance point
0.000 ft {.6910} MIN
NEXT↓↓ HELP→→
Enter the distance from the reference line on the
sensor housing to the zero distance point, the closest
point to the sensor to be measured. In most cases the
zero distance point is the top of the tank. The readout
will be zero at the zero distance point. Above this
point, the readout will be negative.
REF LINE to maximum
distance to be
measured 0.000 ft
NEXT↓↓ HELP→→
Enter the distance from the reference line on the
sensor housing to the maximum distance point, the
farthest point from the sensor, to be measured.
If the primary measurement is level, the following two menu items are shown.
Distance REF LINE to
zero level point
0.000 ft {115.1 MAX}
NEXT↓↓ HELP→→
Enter the distance from the reference line on the
sensor housing to the point on the tank where the
level measurement readout should display zero. The
zero level point does not have to be at the bottom of
the tank. Below the zero level point, the readout will
be negative.
Maximum level
to be measured
0.000 ft {x.xxx MAX}
NEXT↓↓ HELP→→
Enter the highest possible level to be measured
relative to the zero level point. The value displayed as
{x.xxx MAX} is calculated based on the entry for the
zero level point. The gauge will not measure reliably
above this level.
Position of decimal
in readout 1 000.0
{ft level}
NEXT↓↓ ←←CHANGE→→
Press ← or → to move decimal point to the desired
position in the display readout for the primary
measurement (level or distance).
Note: The next two menu items define the levels (or distances) corresponding to
the maximum and minimum current outputs. The default range for the
current output is 4.0 mA to 20.0 mA. To change the max or min current
output, use the “Modify or reassign current output” menu (see Chapter 6.)
Meas #1 reading for
20.00 mA output:
0.000 ft level
xx.xx assume NEXT↓↓
Enter level or distance which corresponds to the
maximum current output. For level, “Maximum
level” is the default (assumed) value. For distance, the
value (Maximum Distance – Zero Distance Point) is
the default. If the entry is exactly zero, the default
(assumed) value is used.
Meas #1 reading for
4.000 mA output:
0.000 ft level
NEXT↓↓
Enter level or distance which corresponds to the
minimum current output. The default value is 0.0. For
level, this is the “Zero Level Point,” and for distance,
this is the “Zero Distance Point.”