User guide

Ultrasonic Fuel Sensor User Guide
ACCEUF100UG001 - 13 -
on the surface.
Supply/Return Tube
Dip Tube Fuel
Sending Unit
Supply / Return
Tube
Float Fuel
Sending Unit
Figure 5. Locations and Structures of Obstacles in Square Fuel Tank
4.1.3. Locate the Installation Area
According to the principle of the ultrasonic fuel sensor, the gauged liquid depth could be wrong if
the ultrasonic wave is hindered by the obstacles such as supply or return tube and fuel sending unit.
Therefore, the area covering the fuel sending unit and supply or return tube at the top of the fuel
tank can not be used for installation. Meanwhile, the detector should be installed close to the
center of the fuel tank in order to minimize the interference. As shown in Figure 6, select an area
with
20CM X 20CM in the center of the fuel tank as the installation area after lining out the area
not suitable for installation. The installation area can be bigger or smaller, depending on the actual
situation of the fuel tank. If the obstacles are located right in the center of the fuel tank, please
select an area near the center without obstacles to install the detector.
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