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Buses/
City buses, Latvia

SOLUTION

Telematics system provider proposed to install fuel tank monitoring system, based on DUT-E S7
wireless fuel level sensors and telematics unit.

DUT-E S7 measures fuel level in fuel tank with accuracy of 0,1 mm. Fuel data is transmitted using
wireless S7 Technology via BLE-channel (Bluetooth 4.X Low Energy) to receiver - telematics unit with
BLE. It is also possible to monitor data on the screen of Android smartphone or tablet. Data is
transferred without pairing with receiver, simultaneously to several devices - in BLE radio mode.

Installation of fuel tank monitoring system based on DUT-E S7 takes place twice as fast as when
installing standard capacitive sensor - there is no need to lay connecting cables behind the
sheathing of passenger's compartment. Errors during electrical connection of sensor to telematics
unit are eliminated. DUT-E S7 operates without external power supply. Built-in battery provides
completely autonomous operation for 5 years.

Each complex shape fuel tank was
equipped with two or three sensors. This
made it possible to accurately measure
DUT-E S7 wireless
fuel volume in such a case. When several fuel level sensor
sensors are installed in fuel tank,
monitoring system provides fuel
measurement without "blind spots" – so
that, measurement inaccuracy does not
exceed ± 1%, regardless of the amount
of fuel in tank.

Data on fuel volume is transmitted to Teltonika telematics unit and,
thereafter, to telematic service − Skybrake vehicle tracking system.
Three DUT-E S7 sensors in a fuel tank
of a complex shape – accurate fuel tank
measurement without blind spots

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