Description
DUT-E S7 wireless sensor allows to measure current fuel volume and its changes in a fuel tank. DUT-E S7 is used as a part of vehicle telematics system (GPS vehicle tracking system) and provides reliable information on remaining fuel volume, fuel tank fill-up and draining volumes and helps fleets to set up clear fuel accounting and prevent fuel theft from vehicle’s tank. DUT-E S7 wireless fuel level sensor is also used for fuel level monitoring in stationary tanks.
Wireless data transfer is carried out using S7 Technology via BLE channel. BLE signal from DUT-E S7 can be received by compatible vehicle tracking unit (telematics unit) and/or any Android device.
DUT-E S7 can also be used as a “night watchman” to alert driver on fuel theft from vehicle’s tank, for example, when resting at night parking.
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Tasks
Monitoring of fuel tank fuelling and draining
Fuel theft detection
Fuel usage monitoring
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Advantages of DUT-E S7
- wireless data transfer using S7 Technology via BLE (Bluetooth 4.X Low Energy);
- operation in BLE-radio mode without pairing with receiver – simultaneous data transfer to telematics unit, smartphones, tablets with Bluetooth
- built-in battery – DUT-E S7 works without external power supply;
- very low power consumption allows autonomous operation of sensor within 5…10 years;
- explosion protection confirmed by “On the Safety of Equipment for Operation in Explosive Environment“
No cable
Explosion- and fire-safety of sensor.
No cable
Quick installation of sensor and telematics unit.
No cable
Increased resistance to vandalism.
DUT-E S7 has all the advantages of “classical” DUT-E fuel level sensor models:
- shortening/extending length of measuring probe;
- bottom spring for higher rigidity of mounting into tank;
- screen filter for probe protection from water and mud in a tank;
- digital self-diagnostics feature for sensor operation quality check;
- automatic temperature correction with adjustable coefficient;
- automatic compensation of ambient temperature effect on sensor’s parts.
- holes for sealing sensor in order to avoid unauthorized dismounting;
- bayonet mounting plate allows to reduce mounting time;
- ergonomic grooves for comfortable grip when fastening in bayonet mounting;
- full set of mounting accessories;
- conformity with European and national automotive standards.

Fuel Tank Monitor app features:
- displaying information about the sensors (serial number, firmware version, address within S7 network);
- saving and uploading sensor profile to / from other android devices;
- keeping fuel level sensor’ “Empty” / “Full” calibration parameters;
- keeping fuel tank calibration table;
- display notifications on fuel tank fill-up / discharging;
- fuel level sensor self-diagnostics information;
- data logging from DUT-E S7 fuel level sensor.
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BLE module activation
DUT-E S7 has the following 3 modes of operation, which are defined by BLE-module state:
- “Safekeeping” — in this mode DUT-E S7 is kept from the date of production. BLE-module of the sensor is deactivated, no signal is sent;
- “Technological” — limited functionality mode, enabled only for serial number and firmware version check through S7 app.
To activate Technological mode, touch sensor head’s cap with permanent magnet (see figure 9 a). After 4 hours or after re-touch of cap with the magnet, BLE-module of the sensor will switch back into Safekeeping mode. - “Working” – full functionality operation mode of DUT-E S7. “Working” operation mode is enabled when installing the sensor into a fuel tank. After enabling this operation mode, it becomes possible to adjust configurations related to a particular sensor and monitor its values using Service DUT-E S7.
In “Working” mode, BLE-module of DUT-E S7 becomes active for the remaining lifetime of the sensor without possibility of switching to any other mode.
To enable “Working” mode, small screwdriver and permanent magnet should be used. A screwdriver should touch both tubes (i.e. make a short circuit of measuring probe) and permanent magnet should touch sensor head’s cap.
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