Omnicomm LLS 4 Manuel utilisateur

Omnicomm LLS 4 Fuel Level

Sensors

User Manual

23.03.2018

Contents

General

Specifications

Preparation

Fuel Tank Preparation

Sensor Preparation

Setting

“Empty/Full” Calibration

Omnicomm LLS 4 Sensor Setting

Installation and Connection

Gauging

Sealing

Appendix. List of equipment for Omnicomm LLS 4 fuel level sensors installation

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

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