Fuel level sensors

Smart sensors for fuel tank monitoring

Example of sensor data

Purpose of use

DUT-E sensors are designed for accurate fuel level measurement in all types of vehicle tanks and in tanks of stationary objects. DUT-E can be used as a part of fuel monitoring system or replace standart vehicle fuel meter.

Fuel level sensor DUT-E transmits data about current fuel level to GPS tracker. Fleet monitoring system determines location and time of this transfer using GPS. User receives information about the events and parameters of the vehicle in the form of graphs and tables.

Send a request

Principle of operation

DUT-E fuel level sensors are based on capacitance principle. Depending on fuel level in tank, the capacitance changes. Embedded software of the sensors instantly analyzes capacitance and generates corresponding output signal.

Major benefits of that principle:
1) extra solidity due to absence of moving parts
2) high accuracy and sensitivity of measurement
3) easy probe cutting/extending right at installation place

Features

Configuratable thermal correction for automatic compensation based on ambient temperature *;
digital self-diagnostics to control data reliability *;
no recalibration required for up to 30% length reduction of the sensor (DUT-E А5, DUT-E А10, DUT-E I);
length increase with additional sections of DUT-E – up to 236.22 inch *;
ergonomic bayonet-type fastening to save mounting time;
sealing openings to prevent tampering;
all the necessary mounting items and cords in delivery set;
filter for secure protection from water and mud;
convenient ready output signal showing fuel level in the tank in mm, fuel volume in liters, percentage of full tank capacity.

* – DUT-E AF, DUT-E 232, DUT-E 485, DUT-E CAN.

Specifications

Measurement inaccuracy, %, not more than	0.2 for stationary fuel tanks and stationary vehicles 1 for moving vehicles
Supply voltage, V	10-50
Overvoltage protection, V	up to 100
Consumption current at power supply voltage, mA	≤25 (24 V) ≤50 (12 V)
Nominal length of the measuring part, inch	DUT-E A5, A10, F – 13.78, 19.69, 27.56 DUT-E AF, 232, 485, CAN – 13.78, 27.56, 39.37

Operating principle	capacitive
Operating temperature, ^оF	from -40 to +185
Output signal	DUT-E AF: Analog, Voltage / Frequency 1-9 V / 500-1500 Hz; DUT-E A5: Analog, Voltage 1.5-4.5 V; DUT-E A10: Analog, Voltage 2.5-9 V; DUT-E F: Frequency 1-9 V 500-1500 Hz; DUT-E I: Analog, Current 6.7-20 mA; DUT-E 485: digital, DUT-E COM protocol; DUT-E 232: digital, DUT-E COM protocol; DUT-E CAN: digital, SAE J1939 protocol.
Warranty	2 years from the date of manufacturing

DUT-E models selection

DUT-E

Classic fuel level sensor

DUT-E – standard fuel level sensor with cable interface designed to measure fuel level and volume in tanks of vehicles and stationary objects. Usually used as part of a vehicle’s fuel control and monitoring systems. Output signals: analog, voltage, frequency, current, digital interface (RS-232, RS-485, CAN j1939 / S6).

DUT-E S7

Wireless fuel level sensor (BLE)

DUT-E S7 – wireless fuel level sensor with built-in battery transmits data via BLE (Bluetooth 4.X) simultaneously to several devices, such as GPS tracker, display in a driver’s cab, smartphones / tablets. The absence of a cable provides explosion and fire safety, quick installation, resistance to vandalism.

DUT-E 2Bio

Differential fuel level sensor

DUT-E 2Bio – differential fuel level sensor with automatic recognition of fuel type and thermal compensation measures the amount of fuel in the tank with the same accuracy for all types of fuel. Output signals: analog, voltage, frequency, current, digital interface (RS-232, RS-485, CAN j1939 / S6).

DUT-E GSM

Fuel level sensor with GPS and GSM

DUT-E GSM combines properties of fuel level sensor and GPS tracker, transmits data about fuel volume, temperature, location, route, other via GSM 2G/3G/LTE network to telematics server, sends reports by e-mail and SMS. DUT-E 2Bio and DUT-E sensors can be connected to DUT-E GSM for monitoring fuel in several tanks as well as other telematics devices. Remote sensor configuration via the Internet.

Send a request

INSTALLATION

DUT-E has a standard 5-bolted flange and can be installed instead of standart fuel meter or separately in fuel tank. All parts required for the installation and sealing of DUT-E sensor are present in DUT-E mounting kit.

It is recommended to install DUT-E in the geometric center of the tank.

After DUT-E installation, it is necessary to perform fuel tank calibration.

Calibration table is used by fuel management system to determine fuel volume in tank.

DUT-E sensors are able to calculate fuel volume (in liters or as a percentage of the full tank) independently and send this data to the output message. To do this, the calibration table must be stored in the sensor memory using the SK DUT-E service kit.