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Fuel Tank Preparation

1. Select the location for Omnicomm LLS-Ex 5 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:

Selection of the location for Omnicomm LLS-Ex 5 sensor

  • When installed, the sensor should not be in contact with reinforcement ribs and auxiliary equipment inside the tank
  • Installation of two sensors in one fuel tank allows for significant reduction of the fuel level dependence on the vehicle inclination angle:

Installation location of two Omnicomm LLS sensors

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 of Omnicomm LLS sensor installation location

The mounting hole diameter depends on the tank material:

  • ø 4 mm – for metal tanks with wall thickness over 3 mm (cut M5 thread)
  • ø 7 mm – for plastic and metal tanks with wall thickness up to 3 mm (for rivets)
  • ø 4 mm – for plastic tanks with wall thickness over 3 mm

Sensor Preparation

1. Cut the sensor measuring probe according to the following recommendations:

  • The length of the sensor measuring part should be 20mm less than the depth of the tank.
  • The REF channel must be at least 100 mm shorter than the measuring part of the sensor. If the difference is less than 100 mm, trim the REF channel according to the figure:

2. Install the central partition into the sensor measuring part at the depth of 1 cm.

Cut the REF channel (only if the length of the REF channel and the measuring part is less than 100 mm):

1. Install the central partition in the REF channel in close proximity to the cut point.

2. Cut with a cutting wheel (max. 125 mm in diameter)

3. Remove a section of the REF channel rod

The REF channel rod is shorter than the main measuring rod and is located on the right when looking at the sensor body on the connector side.