FRC TankVisionPro WLA300 User manual

WLA300 Rev170606
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TANK INDICATOR
WLA300/400 WATER TANKS
WLA360/460 CLASS A FOAM CONCENTRATE TANKS
WLA370/470 CLASS B FOAM CONCENTRATE TANKS
Document Number:
XE-WLA3PM-R0A
PRIMARY and REMOTE DISPLAYS
MAXVISION
LED TANK
DISPLAY
CAB
MINIATURES
FIRE RESEARCH CORPORATION
www.reresearch.com
26 Southern Blvd., Nesconset, NY 11767
TEL [phone] FAX [phone] TOLL FREE 1.800.645.0074

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CONTENTS
Table of Contents
CONTENTS................................................................................................................ 2
List of Figures........................................................................................................ 3
INTRODUCTION ...................................................................................................... 4
Overview................................................................................................................ 4
Features.................................................................................................................. 4
Specications......................................................................................................... 6
GENERAL DESCRIPTION ....................................................................................... 7
Components ........................................................................................................... 7
INSTALLATION ........................................................................................................ 9
Install Display Module........................................................................................... 9
Install Cab Miniature Display................................................................................ 9
Install Pressure Sensor......................................................................................... 11
Install Pressure/Vacuum Foam Tank Vent ........................................................... 13
Install MaxVision LED Tank Display.................................................................. 15
Program MaxVision LED Tank Display.............................................................. 15
Install Remote Light Driver................................................................................. 19
Install Buzzer ....................................................................................................... 19
OPERATION ............................................................................................................ 20
Options................................................................................................................. 20
CALIBRATION........................................................................................................ 22
Overview.............................................................................................................. 22
PROGRAMMING CODES...................................................................................... 23
Calibration and Tank Level Correction................................................................ 23
Non-Linear Calibration........................................................................................ 24
Linear Calibration................................................................................................ 25
Full Tank Correction (Code 55)........................................................................... 26
DIAGNOSTICS........................................................................................................ 27
COLOR PATTERN SELECTION............................................................................ 29
Warning and Control Level Adjustment .............................................................. 30
Brightness Adjustment......................................................................................... 32
Primary and Remote Synchronization ................................................................. 32
WIRING.................................................................................................................... 33
Primary Display (WLA3XX/WLA4XX)............................................................. 33
WIRING.................................................................................................................... 34
Primary Display Rear View (WLA3XX/WLA4XX)........................................... 34
Remote Displays (WLA3XX/WLA4XX) ........................................................... 35
Cab Miniature and MaxVision LED Displays..................................................... 36
Remote Light Driver............................................................................................ 37

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List of Figures
Figure 1. Display Module Mounting Dimensions ................................................... 10
Figure 2. Cab Miniature Display Mounting Dimensions......................................... 10
Figure 3. Pressure Sensor......................................................................................... 12
Figure 4. Pressure/Vacuum Foam Tank Vent ........................................................... 14
Figure 5. MaxVision Color Pattern Programming................................................... 17
Figure 6. MaxVision LED Display Mounting Dimensions ..................................... 18
Figure 7. Remote Light Driver................................................................................. 19
Figure 8. Diagnostics - Faults .................................................................................. 27
Figure 9. Diagnostics - Warnings............................................................................. 28
Figure 10. Color Pattern Selection........................................................................... 29
Figure 11. Diagnostics - Warnings........................................................................... 30
Figure 12. Primary Display Wiring ......................................................................... 33
Figure 13. Primary Display Wiring (Rear View) ..................................................... 34
Figure 14. Remote Display Wiring (WLA3XX/WLA4XX)................................... 35
Figure 15. Cab Miniature and LED Display Wiring ............................................... 36
Figure 16. Remote Light Driver Wiring .................................................................. 37
Figure 17. Typical System Conguration WLA3XXX............................................ 38
Figure 18. Typical System Conguration WLA4XXX............................................ 39
Figure 19. Clean and Inspect Pressure/Vacuum Foam Tank Vent ........................... 40
Figure 20. WLA300 Parts List................................................................................. 41
Figure 21. WLA400 Parts List................................................................................. 42
Typical System Conguration WLA3XX............................................................ 38
Typical System Conguration WLA4XX............................................................ 39
CLEAN/INSPECT PRESSURE/VACUUM FOAM TANK VENT......................... 40
PARTS LIST ............................................................................................................. 41

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INTRODUCTION
Overview
The FRC TankVisionPro indicator shows the actual volume of liquid in a tank. The
liquid in the tank exerts a pressure that is measured by a sensor. As the amount of liquid
changes, the pressure it exerts on the sensor changes proportionally. The pressure change
is used to calculate the exact volume of liquid in the tank. The TankVisionPro can be
calibration to accurately display the volume of liquid in tanks of all shapes and sizes.
The display module is able to communicate with other display modules over the
FRC datalink. This allows for one master display module to control multiple displays.
The module also provides an output for cab miniature displays, remote light drivers,
and a low level warning buzzer.
The TankVisionPro indicator is a unique design made up of an extended wide view
lens with 9 or 10 super bright LEDs (depending on the chosen conguration) mounted
behind it. This allows the display to be visible and clearly read from all line-of-sight
angles for a full 180 degrees.
The pressure/vacuum foam tank vent is supplied for use on foam concentrate storage
tanks. These tanks should remain closed to the atmosphere. The FRC vent enables
the tank to compensate for changes in pressure or vacuum due to thermal expansion,
lling, or when withdrawing foam concentrate from the tank.
The MaxVision LED tank display provides a remote, wide angle view of how much
water or foam concentrate is left in the tank in fractional 1/8 tank eight level increments.
The remote light driver provides the option to have four 60 watt remote lights
controlled by the TankVisionPro to show full, 3/4, 1/2, and 1/4 tank.
Features
Self-Calibrating for Any Shape or Size Tank
Visual Warnings At 1/4 and Almost Empty Tank Conditions
Multiple Remote Displays
Pressure/Vacuum Foam Tank Vent for Sealed Foam Tanks
Color Coded for Water, Class A, or Class B Foam
Self-Diagnostic Capabilities
Cab Miniature Display (Optional)
MaxVision LED Tank Display (Optional)
Remote Light Driver (Optional)
Low Level Warning Buzzer (Optional)
Tank Thin Wall Adapter Kit (Optional)
Output for Foam Fill and Auto Tank Systems (Factory Programmed)

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Adjustable/Programmable Brightness Levels—10 adjustable brightness control levels
Tri-Color LEDs (Red, Green and Blue)—Programmable in various light patterns.
(See pages 27-28 for more detailed information.)
Magnet activated switch for calibration and settings
Option for 12 pin connector with additional features:
Visual warning output
Silence button input to disable audio warning only
Valve control output
Frame attachment is provided for a more secure mounting
Waterproof Polycarbonate Housing and lens enclosure provided to
protect electronics.

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Specications
Display Module
Supply Voltage: 9 - 30 VDC
Supply Current: 0.25 Amp Maximum
Dimensions: 4 3/8 by 3 Inches
Housing: Waterproof Polycarbonate with plastic lens and enclosure
to protect electronics
Indicators: Tri-Color of Bright LEDs (9/10 Rows)
Viewing Angle: 180°
Cab Miniature Display
Supply Voltage: 9 - 30 VDC
Supply Current: 0.5 Amp Maximum
Dimensions: 2 1/4 by 1 1/2 Inches
MaxVision LED Tank Display
Supply Voltage: 12/24 VDC
Supply Current: 1 Amp Maximum at 12 VDC
Dimensions: 14 3/8 by 1 7/8 Inches
Indicators: 96 Super Bright LEDs
Remote Light Driver
Supply Voltage: 9 - 30 VDC
Supply Current: 0.1 Amp Maximum
Switch: Solid State
Switching Voltage: 9 - 30 VDC
Switching Current: 20 AMPS Maximum @ 12 VDC
10 AMPS Maximum @ 24 VDC
Pressure Sensor
Housing: Stainless Steel with 1/4-18 NPT for Mounting
Sensor: Ceramic Diaphragm
Pressure Range: 0 - 5 PSI (Maximum Tank Height - 10 Feet)
Excitation Voltage: 5 VDC
Pressure/Vacuum Foam Tank Vent
Material: PVC and Aluminum with Delrin Valves
Relief Pressure: ±0.01 PSI
Maximum Flow Rate: Compensates 100% for Concentrate Flow Rates
Below 60 GPM

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GENERAL DESCRIPTION
Components
The TankVisionPro consists of the following components:
Display Module
Cab Miniature Display (Optional)
Pressure Sensor
Pressure/Vacuum Relief Vent (Foam Tanks)
MaxVision LED Tank Display (Optional)
Remote Light Driver (Optional)
Buzzer (Optional)
Cables
Display Module
The tank display module is waterproof and has dimensions of 4.4 inches high by
3 inches wide. An output signal from a pressure sensor mounted on the tank is input
to the primary display module. It is processed and the volume of liquid in the tank is
shown on the 9 LED display as a fractional amount on the overlay (or available as
a percentage value for a 10 LED display). Outputs from the primary display module
provide tank volume information to other displays and remote devices.
WLA400 Series primary displays are used for Auto Tank ATA400 systems.
WLA300 Series primary displays can be programmed to use pin #5 for Auto Tank
ATA400 systems.
Cab Miniature Display (Optional)
The cab miniature display has dimensions of 2.75 inches high by 1.5 inches wide.
It provides the option of mounting a remote display in the cab that uses a minimum
of panel space. An output signal from the primary display module is input to the cab
miniature display and the volume of liquid in the tank is shown on the 5-LED display.
Pressure Sensor
The pressure sensor is mounted on a side of the tank near the bottom. It provides a
signal that is proportional to the volume of liquid in the tank to the input of the primary
display module. The electrical connector is waterproof and molded into the pressure
sensor housing.
The standard pressure sensor is used on tanks between 1 and 10 feet in vertical
height. For tanks taller than 10 feet contact FRC for options.

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Pressure/Vacuum Foam Tank Vent
The pressure/vacuum foam tank vent is supplied for use on sealed foam tanks.
The vent compensates for changes in tank pressure due to thermal expansion or when
withdrawing foam concentrate from the tank. Internal passageways provide a path
for air to move between the tank and a center cavity in the vent. These passageways
are self-draining and designed to prevent splashing foam from entering the center
cavity and clogging the pressure and vacuum valves. The pressure and vacuum valves
are easily accessed and disassembled for periodic cleaning or inspections. (Refer to
Maintenance section.)
Note: The vent can compensate for a maximum foam concentrate ow rate
of 60 GPM. If the ow rate of foam concentrate from the tank will exceed
60 GPM, two (2) vents will be required.
MaxVision LED Tank Display (Optional)
The LED display is waterproof and has dimensions of 14 3/8 inches high by 1 7/8
inches wide by 7/8 inch deep. It has 96 RGB LEDs and built in LED drivers. A signal
from the primary display module is output on a two wire datalink and input to the LED
light to show the volume of liquid in the tank.
The display shows the level in 1/8 tank increments. It has a photo sensor that adjusts
brightness for day or night operations. The LEDs are programmable for various display
modes and multiple brightness levels:
Note: The MaxVision LED tank display shows how much water or foam
concentrate is left in the tank in fractional 1/8 tank eight level increments.
Remote Light Driver (Optional)
The remote light driver is waterproof and has dimensions of 4 inches high by 2.75
inches wide by 1 inch deep. An output signal from the primary display module is input
to the remote light driver. This provides the option to power four (4) 60 watt remote
lights that show the volume of liquid in the tank. The lights will show full, 3/4, 1/2,
and 1/4 tank levels.
Buzzer (Optional)
The buzzer provides an audio alarm when the tank volume drops to 25%.
The buzzer resets when the tank volume goes above 25%.
Note: When the TankVisionPro WLA300 primary display is used to control
an Auto Tank ATA400 system, pin 5 does not provide a ground for the
buzzer. WLA400 Series primary displays are used for Auto Tank ATA400
systems. WLA300 Series primary displays can be programmed to use pin
#5 for Auto Tank ATA400 systems.

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INSTALLATION
The TankVisionPro primary display module is connected to the pressure sensor
and is the only module that needs to be calibrated.
Note: The calibration procedure needs to be performed every time a primary
display module is installed.
Install Display Module
The full size display modules all have the same mounting dimensions. Standard
display modules are interchangeable.
Note 1: It is recommended to mount the display at eye level.
Note 2: Do not use Loctite on any screws near the Lexan lens. Lexan lenses
can become brittle and prone to cracking when exposed to Loctite compounds.
1. Measure and mark mounting location for display module panel cutout and
mounting screw holes. Make sure there is clearance behind the panel for
the display and cables before cutting holes. Refer to Figure 1 for layout and
dimensions.
2. Cut out a 4 by 2 1/8-inch hole and drill four (4) holes (clearance or tapped) for
#10 mounting screws.
3. Place display module in position and secure with four (4) screws.
4. Connect the display module cables and wires. (Refer to Wiring Section.)
Install Cab Miniature Display
1. Measure and mark mounting location for cab miniature display mounting hole.
Make sure there is clearance behind the panel before drilling hole. Refer to
Figure 2 for layout and dimensions.
2. Drill a clearance hole for 3/8" threads.
3. Place cab miniature display in position and secure with nut.
4. Connect the cab miniature display wires. (Refer to Wiring Section.)

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C
L
C
L
Panel Cutout
Figure 1. Display Module Mounting Dimensions
5/8"
1 1/2"
1 3/16"
1 9/16"
Drill a clearance hole
for 3/8" threads.
2 3/4"
3/4"
Figure 2. Cab Miniature Display Mounting Dimensions
Mounting holes are
clearance or tapped
for #10 screws.
2 1/2"
2 1/2"
2 7/16"
3 1/2"
3 1/2"
1 5/8"
1 7/8"
4 11/16"
3 1/4"
2 1/8"
4"
4 pl
(with connector)
Photo
Sensor
(Internal)
Note: Do not use Loctite on
any screws near the Lexan
lens. Lexan lenses can become
brittle and prone to cracking when
exposed to Loctite compounds.

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Install Pressure Sensor
The pressure sensor is mounted on one of the tank sides approximately 2 inches
from the bottom. If the tank has a vertical height greater than 10 feet contact FRC, a
different sensor may be required.
Pressure sensors are interchangeable. It is recommended that the calibration
procedure be performed if the pressure sensor is changed.
Note: When mounting the pressure sensor on a tank with thin walls, less
than 3/8", it is recommended that the tank wall be reinforced at the sensor
mounting location.
Pressure Sensor Installation
Note: Do not mount the sensor in the bottom of the tank. Sediment may collect in the port
and cause sensor failure.
1. Measure and mark mounting location for sensor. (Mounting hole should be
approximately 2" from bottom of tank.) Make sure there is clearance for sensor
and cable before drilling hole. Refer to Figure 3 for dimensions.
2. Drill and tap a 1/4 NPT hole.
3. Apply sealant around base and threads of pressure sensor.
4. Screw sensor into hole.
5. Connect sensor cable. (Refer to Wiring Section.)
Thin Wall Adapter Installation
The thin wall adapter kit includes the adapter, two 10-24 x 5/8" screws, 5 minute
epoxy, and a mixing stick.
1. Measure and mark mounting location for adapter. Make sure there is clearance for
adapter, sensor, and cable before drilling hole. Refer to Figure 3 for dimensions.
2. Drill and tap a 1/2 NPS hole.
3. Screw the adapter into the hole.
4. Use the adapter as a template and drill and tap two 10-24 holes for two screws.
5. Back adapter out of hole and apply 5 minute epoxy to back of ange, on threads,
and in two 10-32 through holes.
6. Screw adapter into hole and secure with two screws.
7. Allow the epoxy time to set.
8. Apply sealant around base and threads of pressure sensor and screw into adapter.
9. Connect sensor cable. (Refer to Wiring Section.)

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Apply sealant around
base and threads.
Thin Wall Adapter
Figure 3. Pressure Sensor
Apply epoxy around
ange, threads, and
screws.
Apply sealant
around base and
threads of sensor.
Typical Pressure
Sensor Location
Typical
Tank
1/2 NPS
2"
Mount sensor approximately
2" from bottom of tank.
Note: The sensor can be mounted
vertically on a 90° tting in cold areas to
help prevent water freezing in the sensor.
0.6"
7/8"
Across Flats
1/4 NPT
2.8"
(max)
1.1"
3-Pin
Packard Plug
0.87"
Note: Do not mount the sensor in the
bottom of the tank. Sediment may collect
in the port and cause sensor failure.

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Install Pressure/Vacuum Foam Tank Vent
A pressure/vacuum foam tank vent is supplied for use on sealed foam tanks. The
recommended location to mount the vent is in the cover of the foam tank ll tower. If
there is no ll tower, mount the vent at the highest point of the tank top so that it is not
immersed in foam. For installations where clearance above the ll tower is limited, a
90° mounted vent is available.
Note: The vent can compensate for a maximum foam concentrate ow rate
of 60 GPM. If the ow rate of foam concentrate from the tank will exceed
60 GPM, two (2) vents will be required.
Install Top Mounted Tank Vent
The top mounted tank vent is mounted in a vertical position through a 1 1/8-inch
hole on the lid of the ll tower and is secured by a hand tightened nut.
Note: The tank vent must be in a vertical position and can not be immersed
in foam.
1. Measure and mark mounting location for vent. Make sure there is clearance
for the valve before drilling hole. Refer to Figure 4 for dimensions.
2. Drill 1 1/8-inch diameter hole.
3. Insert vent into the hole with the gasket in place.
4. Screw on nut and hand tighten.
Install 90° Mounted Tank Vent
The 90° mounted tank vent is mounted on a vertical side of the ll tower. It must
be located as close to the top of the ll tower as possible. The vent is held in place with
two (2) 1/4-20 x 3-inch bolts, washers, and locknuts.
Note: The tank vent must be in a vertical position and can not be immersed
in foam.
1. Measure and mark mounting location for vent. Make sure there is clearance
for the valve before drilling holes. Refer to Figure 4 for dimensions.
2. Drill 3/4-inch diameter hole and two through holes for 1/4-20 bolts.
3. Apply sealant to mounting surfaces and bolt holes.
4. Secure vent in place with two bolts, washers, and locknuts.

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Top Mounted Tank Vent
Gasket (Between Mounting
Surface and Tank Vent)
Nut (1 1/8" - 12 TPI)
Maximum Mounting
Surface Thickness
1 3/4"
2 1/2"
5/8"
90° Mounted Tank Vent
1/4" Dia.
(Thru holes for two
1/4-20 x 3" bolts.)
3/4" Dia.
2 5/8"
Figure 4. Pressure/Vacuum Foam Tank Vent
Note: The tank vent must be mounted
in a vertical position. The vent can not
be immersed in foam. (If there is no
ll tower, mount the vent at the highest
point of the tank top so that it is not
immersed in foam.)
2 5/8"
3 7/8"
1 1/2"
Top Mounted Tank Vent
1 1/8" Diameter Hole
90° Mounted Tank Vent
3/4" Diameter Hole with
Two 1/4" Bolt Holes
Typical
Foam Tank
Fill Tower

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Install MaxVision LED Tank Display
The LED display is waterproof to allow for exibility in the mounting location.
Ensure that the light is mounted with the rear against a at surface.
Mount the display so that the raised MaxVision logo on the lens and the drain notch
on the rubber gasket are at the bottom and is mounted with the rear against a at surface.
The wires can be run through any one of the three holes in the rubber gasket.
Note: Before drilling holes place the light in position to check for t. Ensure
that the display clears all obstructions.
1. Measure and mark the mounting hole locations and through hole for the wiring.
2. Drill the two (2) mounting holes for #10 screws and a wire feed thru hole. Any
of the three locations (holes) in the rubber boot can be used for the wires.
Note: Ensure that the terminating resistor is installed on the datalink wires
when required.
3. Connect the wiring and secure the light with two (2) screws. (Refer to Wiring Section.)
Terminating Resistor Notes
The datalink requires two terminating resistors.
1. One TankVisionPro with one or two LED displays: Install one resistor
close to the primary display; install the other resistor farthest away from the
primary display, but closer to the remote display.
2. Two TankVisionPro displays: Install terminating resistor at both ends.
3. If the TankVisionPro is used with a TurboFoam system: Do not install
terminating resistor.
Program MaxVision LED Tank Display
The MaxVision acts as a remote, and the color pattern will mirror the pattern
chosen for the primary display. (See page 29 for detailed information about synching
primary and remote displays.)
Code Entry:
1. Hold a magnet over the calibration point for ve seconds. Two middle rows
of LEDs come on.
2. Swipe the magnet to select the program to be changed; a row of LEDs come
on with each swipe.
Brightness Adjustment:
1. Top 2 rows on - set daytime brightness.
2. Top 3 rows on - set nighttime brightness.

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3. Wait 5 seconds to enter the program.
4. Each swipe changes the LEDs brightness—ten levels that are stepped through
and then repeated.
5. Hold the magnet over the calibration point for ve seconds to load the new
setting. The display blinks three times to conrm setting is loaded.
Programming the MaxVision to Display Foam A, Foam B or Water:
Code Entry:
● Hold a magnet over the calibration point for ve seconds. Two middle rows
of LEDs come on.
Swipe 4 times to set the display for one of the following options:
●Water (Default option)—displays alternate Blue LEDs
●Foam A—displays alternate Green LEDs
●Foam B—displays alternate Yellow LEDs
1. Wait 5 seconds to enter the program.
2. Each swipe changes the choice from Water, to Foam A, to Foam B—the three
options are stepped through and then repeated.
3. Hold the magnet over the calibration point for ve seconds to load and save the
new setting. The display ashes or blinks three times to conrm setting is saved
and updated.
Programming the Color Pattern for the MaxVision:
The default setting for the color pattern is to have this synchronized with the primary
display (as described on page 29, Fig. 10). If it is required to have the MaxVision synchronize
with the primary display, activate the "Code Entry" (as mentioned on page 15), select Pattern
#10, wait for 5 seconds and swipe the magnet once. Save the setting by holding the magnet
for 5 seconds at the calibration point.
However, these same six color patterns from Fig. 10 (shown in Fig. 5) can be "locked
in" for the MaxVision only, separately from the color pattern shown on the primary display.
Additionally, there are three color patterns to display the status level of either Foam A
(all Green LEDs) , Foam B (all Yellow LEDs) or Water (all Blue LEDs). This allows for
customizing of up to nine different "locked-in" color patterns on the MaxVision display
(separate from the primary display).
Perform the following steps to select the locked in color pattern for the MaxVision:
1. Start the "Code Entry" by holding the magnet the calibration point for ve seconds.
Two middle rows of LEDs come on.
2. Swipe the magnet to select the program to be changed; a row of LEDs come on
with each swipe.

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Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 Pattern 6
3. Swipe the magnet once and in ve seconds the previously saved color pattern will
be displayed. The Red LEDs will all light up and scroll upward (as shown in Pattern
10). The Red LEDs scrolling upward means the MaxVision display is synchronized
with the primary display. The color pattern on the MaxVision will be identical to
the one on the primary display. (This is the default setting).
Each swipe changes the choice from each of the nine color patterns—the nine
options are stepped through and then repeated.
4. Hold the magnet over the calibration point for ve seconds to save the new color
pattern setting. The display ashes or blinks three times to conrm setting is saved
and updated.
Pattern 10Pattern 7
Water
Pattern 8
Foam A
Pattern 9
Foam B
Red LEDs Scrolling Upward—
symbolizes the color pattern on
MaxVision is synchronized with
the color pattern on the primary
display (default color pattern
setting for MaxVision)
Figure 5. MaxVision Color Pattern Programming
Note: Reset the power if Pattern
#10 is selected and saved.

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Figure 6. MaxVision LED Display Mounting Dimensions
14 3/8"
13 1/4"
11 1/2"
5 3/4"
5 3/4"
6 5/8"
6 5/8"
7/8"
7/8"
7/8"
1 7/8"
Front
View
Side
View
Rear
View
Three locations are
available for the wires to
exit the rubber gasket.
Drain
Notch
Mounting holes are
clearance or tapped
for #10 screws.
Calibration
Point
(behind "R")
Photo
Sensor
Note: Do not use Loctite on any screws near the Lexan lens.
Lexan lenses can become brittle and prone to cracking when
exposed to Loctite compounds.

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Install Remote Light Driver
The remote light driver is water proof to allow for exibility in the mounting location.
1. Measure and mark mounting location for light driver. Make sure there is clearance
for driver and cable before drilling holes. Refer to Figure 5 for dimensions.
2. Drill and tap two 10-32 holes.
3. Secure remote light driver with two screws.
4. Connect cable and wires. (Refer to Wiring section.)
Figure 7. Remote Light Driver
2 3/4"
1 3/8"
3 1/2"
4"
1"
Install Buzzer
Install the buzzer close to the TankVisionPro so the audible warning is easily
associated with the TankVisionPro. A cutout hole diameter of 1-1/4" is required.
(Refer to the wiring section.)

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OPERATION
No operator input is required for the TankVisionPro to be operational. When power
is on, the display is operating. The signal from the pressure sensor is processed and
the volume of liquid in the tank shows on the display.
Note: Calibrating the TankVisionPro display to the tank is required before
operations. (Refer to Calibration section.)
Primary Display Module
All LEDs are on when the tank is full. Each LED goes off starting at the top and
working down as the liquid in the tank decreases.
The bottom 3 LEDs flash when the tank is less than 1/4 full.
(For the WLA400 Series, the visual warning indicator signal is synchronized
with the ashing LED on the display.)
All LEDs rapidly down-chase when the tank is almost empty.
Options
Programmable LED Display
LED Indicator lights can be programmed to be Red for all 9/10 rows, or one of
the patterns shown on pages 27-29.
12 Pin Connector with Additional Features:
Visual warning output. (Active ground; Maximum 150mA)
Silence button input for audio warning only. (Active ground)
Separate Valve control output. (Active ground; Maximum 150mA)
Separate ground connection for the level sensor
Remote Display Module
The remote display repeats exactly what is shown on the master display.
Cab Miniature Display
All 5 LEDs is on when the tank is full. The LEDs will show full, 3/4, 1/2, 1/4,
and empty tank.
MaxVision LED Display
The LED display repeats exactly what is shown on the master display.