Step Seven
Step Six
CALIBRATION
B. Calibration Tools:
To target calibrate the switch set points, you
will need the appropriate power supply (95-250 VAC or 12-28 VDC
for DC version), tape measurer, flat reflective target such as a wall, and
optional Omega box insert for use as a product holder.
C. Off Tank Target Calibration:
The switch’s relay set points may
be target calibrated OFF the tank or installed ON the tank. Generally,
target calibration is done OFF the tank because it is easier to move the
switch rather than raise or lower the liquid level to the desired relay
set point distances. Locate a flat reflective calibration target such as a
wall. Place the switch perpendicular to the target in the provided
Omega box insert or equivalent
holder. Alternatively, you may
hold the switch with your hand,
but it is critical that prior to
entering any relay set point dis-
tances, the product is held
steady and perpendicular to the
target for at least 15 seconds. If
calibrating against a wall, it is
recommended that the switch be
elevated 3’ (1m) off the ground
by placing it on a table or equiv-
alent flat surface.
D. Entering the CAL Mode:
To enter the CAL mode, you must
first disable the calibration lock out feature. To do so, press and hold
the SELECT button down. While holding the SELECT button, slide
the RUN/CAL switch LEFT to the CAL position, and then release
the SELECT button. At this point, all relay LEDs should be OFF.
E. Selecting a Relay Channel:
After entering the CAL mode,
press the SELECT button once and the Relay 1 LED will turn ON
indicating that the channel is now active for set point calibration.
Press the SELECT button again until the desired Relay channel
becomes active.
F. Erasing a Relay Channel:
With the exception of new prod-
ucts out of the box, all previously entered relay set points should be
erased prior to new programming with the following procedure:
1. Enter CAL mode and SELECT the relay channel to erase.
2. Simultaneously press and hold down both the HIGH and LOW
buttons, and then release the buttons.
3. The Relay and Power LEDs will blink in an alternating pattern
indicating that the relay set points have been erased.
4. At this point, once the LED becomes solid, you may either re-pro-
gram the channel with new set points or leave it inactive.
PROGRAMMING
Set Point
Calibration
Box
Insert
Table
Target
Wall
Tape
Distance
Set Point
Cal. Run
High
Low
Select
RELAY
1
RELAY
2
RELAY
3
L
1
L
2
POWER
A. Programming a Relay Channel:
The relay set points are tar-
get calibrated using the appropriate HIGH and/or LOW two key-
stroke button sequence at each target distance (D1=distance one, D2
= distance two and D3 = Distance 3) per the following logic.
Relay Function
Button Sequence @ Distance(s)
1. High level alarm
High-High (D1)
2. Low level alarm
Low-Low (D1)
3. Out of bounds alarm
High-High (D1) & Low-Low (D2)
4. Automatic fill
Low-High (D1) & High-Low (D2)
5. Automatic empty
High-Low (D1) & Low-High (D2)
6. Duplexing/Alternation
[High-Low (D1) & Low-High (D2), Rly 1]
& [High-High (D3), Rly 2]
B. Programming a High or Low Level Alarm:
After having
powered the switch with the appropriate supply voltage, entered the
CAL mode, selected a relay channel and erased any previously input
set points, follow the below procedure (LOW level alarm instructions
are in parenthesis):
1. Stretch the tape measurer out to the appropriate distance in
between the switch and target.
2. Position the switch at the desired HIGH (LOW) set point distance
defined as the air gap space between the transducer and the target.
Make sure that the switch is stationary and perpendicular to
the target before continuing.
3. Press the HIGH (LOW) button
for the first key-stroke and the
Relay LED will blink once.
4. Press the HIGH (LOW) button
again for the second key-stroke
and the Relay LED will blink
twice.
5. The Power LED will flash from
AMBER to GREEN when the
set point has been accepted into
memory.
6. Press SELECT to program the next relay channel or slide the
RUN/CAL switch RIGHT to exit the CAL mode.
High or Low Level Alarm
Programming
Box
Insert
Table
Target
Wall
Tape
Distance
Set Point
Energize
De-energize
Energize
De-energize
High Level Alarm
Low Level Alarm
After the second High or Low button key-stroke, the Power
LED will flash from AMBER to GREEN indicating that the set
point has been accepted into memory. If all three Relay LEDs
flash RED and remain ON, then the button sequence was done
incorrectly. If so, press SELECT to return to the appropriate
relay channel and erase the previous set points per the CALI-
BRATION section (Step #6-F) of this manual. Then re-program
the channel with the correct button sequence.
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