Omnicomm LLS 4 User manual

Omnicomm LLS 4 Fuel Level
Sensors
User Manual
23.03.2018

Contents
General
3
Specifications
4
Preparation
5
Fuel Tank Preparation
5
Sensor Preparation
7
Setting
8
“Empty/Full” Calibration
10
Omnicomm LLS 4 Sensor Setting
11
Installation and Connection
11
Gauging
13
Sealing
16
Appendix. List of equipment for Omnicomm LLS 4 fuel level sensors installation
18

Omnicomm LLS 4 Fuel Level Sensors
General
This User Manual is designed for Omnicomm LLS 4 fuel level sensors.
Omnicomm LLS 4 is a fuel level sensor with RS-232 and RS-485 interfaces.
While carrying out installation, observe the safety rules and regulatory requirements
for this type of work.
Minimum allowable length of the measuring piece is 150 mm.
The dielectric permeability of the measured medium should be constant. Failure to
comply with this requirement will lead to increased measurement error.
General
Omnicomm LLS 4 Fuel Level Sensors 3

Specifications
Parameters Value
Power supply voltage, V 7 – 80
Power consumption, W 0,4
Measurement range, mm 0…700, 1000, 1500, 2000,
2500, 3000
Main reduced error of measurement of the sensor, % ±1
Relative humidity at 25 °С (without moisture condensation),
%
From 5 to 95
Atmospheric pressure, kPa From 84 to 107
Maximum relative humidity at 25 °С (without moisture
condensation), %
100
Working temperature range, °С From - 60 to + 85
Body protection rating IP69k
Operating mode Continuous
Internal filter size From 0 to 30
Measurement time period, s 1
Overall dimensions, cm 78×74×(24+length of
measuring piece)
Specifications
Omnicomm LLS 4 Fuel Level Sensors 4

Weight, kg Not more than 2
Average service life, years 8
Output interface for measured values RS-232, RS-485
Programmable interface transmission rate, bit/s 2400, 4800, 9600, 19200,
38400, 57600, 115200
Digital reading range corresponding to the maximum level
measurement value
1…4095
Digital reading range corresponding to the minimum level
measurement value
0…1023
Temperature measuring range, °С From - 40 to +80
Absolute error in temperature measurement within the
entire temperature measuring range, °С
±2
Parameters Value
Preparation
Fuel Tank Preparation
1. Select the location for Omnicomm LLS 4 sensor installation subject to the following
requirements:
Installation location should be as close as possible to the geometric center and
placed at the deepest level of the tank:
Preparation
Omnicomm LLS 4 Fuel Level Sensors 5

When installed, the sensor should not be in contact with reinforcement ribs inside
the tank
Installation of two sensors in one tank allows for significant reduction of the fuel
level dependence on the vehicle inclination angle:
2. Steam out the tank to ensure compliance with the safety rules
3. Drill out the central bore by bimetal core drill ø35 mm
4. Drill out four mounting holes according to the diagram:
Preparation
Omnicomm LLS 4 Fuel Level Sensors 6

The mounting hole diameter depends on the tank material:
ø 4 mm – for metal tank with wall thickness over 3 mm (cut M5 thread)
ø 7 mm – for plastic and metal tank with wall thickness up to 3 mm (for rivets)
ø 4 mm – for plastic tank with wall thickness over 3 mm
Sensor Preparation
1. Measure the tank depth. Cut the sensor measuring piece so that its length is 20
mm less than the depth of the tank. Ensure that shearing line is perpendicular to
the sensor longitudinal axis
2. Use oil-and-petrol resistant non-conductive sealant to fill the vendor furnished
insulation cap up to 1/4–1/5 of its volume. Recommended sealants: PERMATEX™
MotoSeal® Black, ABRO™ Black, ABRO™ Red
3. Put the insulation cap on the Omnicomm LLS 4 sensor central rod
Preparation
Omnicomm LLS 4 Fuel Level Sensors 7

Setting
Connect the sensor to PC or tablet.
Connect Omnicomm LLS 4 sensors according to the diagram:
Launch Omnicomm Configurator on PC or tablet.
Setting
Omnicomm LLS 4 Fuel Level Sensors 8

Omnicomm Configurator (PC):
Fuel level is displayed without regard for filtration.
Setting
Omnicomm LLS 4 Fuel Level Sensors 9

Omnicomm Configurator (Android):
“Empty/Full” Calibration
Perform calibration in the fuel, in which the fuel level sensor Omnicomm LLS will
operate.
1. Fill the measuring container with fuel
2. Immerse the Omnicomm LLS sensor in the fuel to the full length of the measuring
piece
3. Wait for green indicator “Level Stabilized” to appear.
In the “Settings” tab, “Empty/Full Calibration” section, press “Full” button, then the
value corresponding to the full tank will be set
4. Take the Omnicomm LLS sensor out of the container and allow the fuel to flow
down the measuring piece for 1 minute. In the “Empty/Full Calibration” section,
press “Empty” button, then the value corresponding to the empty tank will be set
5. Press the “Write to Device” button
Setting
Omnicomm LLS 4 Fuel Level Sensors 10

Omnicomm LLS 4 Sensor Setting
“Network address” (1 to 254) – set the network address for the Omnicomm LLS fuel
level sensor. When several sensors are connected to one external device, they should
have unique network addresses.
“Maximum reading” (1 to 4095) – select the maximum reading for the LLS fuel level
sensor. Default value – 4095.
“Minimum reading” (0 to 1023) – select the minimum reading for the LLS fuel level
sensor. Default value – 0.
“Filtration” – set the output signal filtration parameters:
“None”– no filtration is performed. This option is used, when filtration is carried out
by external device.
“Minimum”– this filtration is used in stationary fuel storages and non-mobile
machinery
“Medium”– this filtration is used in case of vehicle's operation in normal road
conditions
“Maximum”– this filtration is used in case of vehicle's operation in severe road
conditions
“Automatic data output”– select:
“No output” – no independent data output (without request) is performed
“Binary” – independent binary data output
“Character” – independent character data output
“Data output interval” (1 to 255 seconds) – set the independent data output interval
Automatic data output mode may be used only with maximum one Omnicomm LLS 4
sensor connected to one interface.
“Severe operating conditions” mode – switch on to enable additional filtration of
measurement values taking into account the rough working conditions.
“Data rate” – select the rate for data exchange with external device. Default value –
19,200 bit/s.
Installation and Connection
Installation and Connection
Omnicomm LLS 4 Fuel Level Sensors 11

1. Put the vendor furnished mounting point gasket on the Omnicomm LLS sensor
measuring piece
2. Put the Omnicomm LLS sensor into the tank and fix:
when fixing with rivets, use a rivet driver
when bolting, put on a seal (per bolt), a spacer and a spring washer
when fixing to plastic tanks with wall thickness over 3 mm, use vendor furnished
self-tapping screws and a seal (per self-tapping screw)
3. Connect the Omnicomm LLS sensors to an external device according to the
diagram:
Omnicomm LLS 4:
Functions of mounting cable wires
Name of signal Wire Color
RS-485 A Orange-white
RS-485 B Whitish-blue
RS-232 Tx Pink
Installation and Connection
Omnicomm LLS 4 Fuel Level Sensors 12

RS-232 Rx Grey
+V Power Brown
Ground White
Name of signal Wire Color
4. Connect the fuse holder to the LLS sensor power cable (brown wire) in close vicinity
to the vehicle power supply circuit
5. Install the fuse in the fuse holder 6. If necessary, seal the bolt (self-tapping screw)
and the connection
Several Omnicomm LLS 4 sensors will be connected side-by-side via the RS-485
interface.
Gauging
Gauging of the fuel tank is necessary to verify conformity of the color code issued by
the Omnicomm LLS 4 sensor to the fuel volume in the particular fuel tank.
Gauging of the fuel tank is the fuel tank filling up – from empty to full, with certain
filling interval, and recording the Omnicomm LLS 4 sensor readings in the gauging
table.
A container may be gauged by draining.
Gauging of a container with several Omnicomm LLS 4 sensors will be similar to
gauging with one sensor. Before the gauging, add the necessary quantity of sensors
and specify the network addresses. Gauging is performed for all sensors at the same
time. Connect several sensors to PC or tablet using a KTZ splitter.
Gauging of the container with one Omnicomm LLS 4 sensor:
1. Empty the fuel tank
2. Connect the sensor to PC or tablet according to the diagram in the Setting section
3. Launch Omnicomm Configurator on PC or tablet. Select “Container gauging”
operating mode
Omnicomm Configurator (PC):
Gauging
Omnicomm LLS 4 Fuel Level Sensors 13

If the sensor reading column is not displayed, press the “Add sensor” button. Select
the type of sensor. Specify the network address set in the sensor during setting.
Gauging
Omnicomm LLS 4 Fuel Level Sensors 14

Omnicomm Configurator (Android):
If during gauging the Omnicomm Configurator (Android) does not display all the
connected Omnicomm LLS sensors, select “Refresh the list of devices” in the
menu.
4. Set the flow interval in liters
Perform filling by a measuring container or under control of a fluid flowmeter with
predefined interval. The container should have metrological calibration test
certificate.
5. Press the “Start/continue gauging” button
6. Fill in the fuel volume equal to the flow interval
7. Press “Add line”
The filling volume equal to the predefined flow interval will be displayed in the
“Liters” column.
The value equal to the filling volume will be displayed in the “Sensor” column.
8. Press “Add line”
9. Repeat items 6, 7 and 8 according to the number of control points. The minimum
recommended number of control points – 20
Gauging
Omnicomm LLS 4 Fuel Level Sensors 15

10. Press “Finish gauging” button
11. Save the gauging table in the gauging file (.ctb), Omnicomm Online (.xml) file in
the Terminal or Indicator, by pressing the “Export” button
When performing the gauging table export to the Omnicomm Online (.xml) file, the
“Export” window will open. Specify the Omnicomm LLS sensor number to display in
Omnicomm Online.
Sealing
For Omnicomm LLS 4 sensors the bolt or self-tapping screw and the connection may
be sealed:
1. Install the bolt or self-tapping screw through a hole in the seal
2. Close the seal cover with a snap
3. Enter the seal and cover numbers in the report
Put the sealing tie on the Omnicomm LLS 4 connector:
Sealing
Omnicomm LLS 4 Fuel Level Sensors 16

1. Connect the Omnicomm LLS 4 connector and the mounting cable connector until
their typical clicking position
2. Run the seal flexible piece through the connectors
3. Run the seal flexible piece through the hole in the seal body
4. Tighten up the connection
5. Cut off the extended section of the seal flexible piece
Sealing
Omnicomm LLS 4 Fuel Level Sensors 17

Appendix. List of equipment for
Omnicomm LLS 4 fuel level sensors
installation
№ Name Number
1 Bimetal core drill ø35 mm 1 No.
2 Core drill shank 1 No.
3 Metal drill ø7 mm or ø4 mm 1 No.
4 Hacksaw 1 No.
5 Spanner 8 mm 1 No.
6 Tap M5 with holder 1 No.
7 Snap-seal for bolt/self-tapping screw 1 No.
8 Personal computer 1 No.
9 Omnicomm Configurator program 1 No.
10 Omnicomm UNU-USB (or UNU) setting device 1 No.
11 DC power supply unit 10–15 V, 0.5 A (only with UNU used) 1 No.
12 Measuring container 1 No.
13 Fuel
Appendix. List of equipment for Omnicomm LLS 4 fuel level sensors installation
Omnicomm LLS 4 Fuel Level Sensors 18

14 Gauging container 1 No.
№ Name Number
Appendix. List of equipment for Omnicomm LLS 4 fuel level sensors installation
Omnicomm LLS 4 Fuel Level Sensors 19

[e-mail]
www.omnicomm-world.com