C. Programming UNITS:
To change UNITS from INCHES to
CM or PERCENT.
1. Press the SELECT/FAST button and hold it for 5 seconds until
PROG appears.
2. When UNITS appears, press the SELECT/FAST button. The display
will rotate between INCHES, CM, PERCENT and DISPLAY.
3. Press the SELECT/FAST button when the UNITS you want
(INCHES, CM or PERCENT) appear. The display will then dis-
play SAVED.
You have successfully changed the UNITS function.
Note: Percent units can only be selected after the trans-
mitters Height (4 mA) and Fill H (20 mA) set points have
been programmed. Therefore initial programming should
always be done in INCH or CM UNITS.
D. Display Mode:
The transmitter is factory set such that the
display reads the distance from the bottom of the transmitter to
the liquid surface. This is also referred to as the Air distance (Air
Mode). As the level of liquid increases, the display will decrease
and vice versa. Conversely, the transmitter may be set to read the
actual height of liquid in the tank (Liquid Mode). Below, a tank
height of 100” will display 40.0, which represents 40.0” of air in
the AIR Mode. In the Liquid Mode, the display will change to
60.0, which represents 60.0” of liquid.
AIR MODE
LIQUID MODE
Step Nine
Step Eight
PROGRAMMING
PROGRAMMING
SELECT
FAST
SELECT
FAST
HEIGHT
(MaxR)
FILL H
(MinR)
E. Change Display Mode:
To change the display to indicate
the height of liquid, follow the instructions below:
1. Press the SELECT/FAST button and hold it for 5 seconds until
PROG appears.
2. When UNITS appears, press the SELECT/FAST button. The dis-
play will rotate between INCHES, CM, PERCENT and
DISPLAY.
3. When DISPLAY appears, press the SELECT/FAST button. The
display will rotate between AIR or LIQUID.
4. When LIQUID appears, press the SELECT/FAST button.
You have successfully programmed the LIQUID mode.
F. Programming Off Tank:
If you know the dimensions of your
tank, you may input the 4 mA and 20 mA set points manually without
performing target calibration (requiring you to raise and lower the
liquid level). To do so, review the following:
HEIGHT:
The point in inches or centimeters from the transducer
face where the output will be 4 mA (generally the bottom of the
tank). Factory default is the same as the unit’s maximum range.
Example UCL-520 = 314” maximum range which is also the same
4 mA set point under factory default.
FILL H:
The point in inches or centimeters from the bottom of the
tank to the high level where the output will be 20 mA (generally the
straight wall distance from the bottom of the tank). NOTE: The
transmitter dead band is automatically subtracted from the FILL H.
Example: UCL-520 = 8” dead band. Therefore the maximum FILL
H is 314” [maximum range] - 8” [dead band] = 306”.
40.0" of Air
UCL-520
100.0"
Height
UCL-520
60.0" of Liquid
100.0"
Height
SELECT
FAST
SELECT
FAST
SELECT
FAST
