Differential fuel level sensor
Various fuel types (summer diesel, winter diesel and especially biodiesel) have different permittivity values. That explains the difference in fuel volume measurement when capacitive fuel sensors are used. To take those differences into account, DUT-E 2Bio differential fuel level sensor is made.
DUT-E 2Bio has three measuring electrodes, what allows sensor to detect various fuel types automatically. Advantages of DUT-E 2Bio differential fuel level sensor:
- automatically detects changes in fuel composition by predefined pattern
- makes automatic correction and measure fuel volume precisely
- detects tank fill-up and fuel draining volumes
- identifies composition of fuel and indirectly evaluates fuel quality
- automatic detection of fuel type in a fuel tank.
DUT-E 2Bio is used as part of GPS tracking system, vehicle telematics and fuel monitoring systems or as a replacement for standard vehicle FLS.
Tasks
Monitoring of fuel tank fuelling and draining
Fuel theft prevention
Fuel consumption monitoringАdvantages of DUT-E 2Bio
Detection of fuel type change
Third measuring electrode of DUT-E 2Bio ensures automatic detection of fuel type change. Automatic detection of fuel type makes DUT-E 2Bio useful for preventing misuse or theft of different fuel types filled in fuel tank.
Employs S6 Technology
CAN/S6 interface of DUT-E 2Bio allows to connect up to 16 sensors into a single network together with other S6-compatible equipment. Data protocol is shared, data transfer and power supply of all units occurs via a single bus cable.
Built on new IoT Burger technology
IoT Burger Technology turns DUT-E 2Bio into a smart sensor able to process and analyze fuel level data before sending to GPS tracker unit. That includes temperature correction, signal filtration and linearization, self-diagnostics of sensor’s operation. Data refining allows to get clear and precise information on fuel volume remaining in tank, refueling and fuel discharges from tank. Self-diagnostics gives possibility to detect mistakes done during installation and configuration, and choose proper way of problem resolution before coming and dismounting sensor from fuel tank.
Detection of fuel type change
Third measuring electrode of DUT-E 2Bio ensures automatic detection of fuel type change. Automatic detection of fuel type makes DUT-E 2Bio useful for preventing misuse or theft of different fuel types filled in fuel tank.
Employs S6 Technology
CAN/S6 interface of DUT-E 2Bio allows to connect up to 16 sensors into a single network together with other S6-compatible equipment. Data protocol is shared, data transfer and power supply of all units occurs via a single bus cable.
Built on new IoT Burger technology
IoT Burger Technology turns DUT-E 2Bio into a smart sensor able to process and analyze fuel level data before sending to GPS tracker unit. That includes temperature correction, signal filtration and linearization, self-diagnostics of sensor’s operation. Data refining allows to get clear and precise information on fuel volume remaining in tank, refueling and fuel discharges from tank. Self-diagnostics gives possibility to detect mistakes done during installation and configuration, and choose proper way of problem resolution before coming and dismounting sensor from fuel tank.
Adjusting DUT-E 2Bio probe length
DUT-E 2Bio S7: Innovation in fuel level measurement
DUT-E 2Bio S7 is a smart sensor that automatically adapts to changing fuel types, ensuring maximum accuracy in tank level monitoring. With built-in Bluetooth, it offers not only precise measurement but also exceptional ease of use.
- Wireless technology: Data transmission via Bluetooth Low Energy with no need for signal cables.
- Standalone operation: Up to 5 years without external power thanks to the built-in battery.
- Rugged design for harsh environments: Reinforced housing designed for demanding conditions.
- Safe for explosive atmospheres: IECEx-certified — for use in fuel storage, on fuel tankers, at mining sites, and across other high-risk operations. The equipment is certified to IEC 60079-0 and IEC 60079-11 under IECEx Certificate IECEx FTZU 25.0021X
- Easy installation: No cabling means faster installation and lower maintenance costs.
- Full compatibility: Seamless integration with telematics systems and mobile devices across your fleet.
- Convenient configuration: Sensor setup and control via a mobile app — no PC connection required.
- BLE radio: Simultaneous data transmission to multiple receiving devices — terminal, smartphone, and tablet.
Accessories for installation of DUT-E 2Bio fuel level sensor
Operation principle …………………………………………… Capacitive
Measurement inaccuracy………………………………….. ±1.0%
Supply voltage, V ……………………………………………… 10 .. 45, protection up to 100 (DUT-E 2Bio); built-in battery (DUT-E 2Bio S7)
Operation temperature, °С ………………………………. –40 .. +85 (DUT-E 2Bio); –30 .. +80 (DUT-E 2Bio S7)
Current consumption (DC 24/12V), mA …………… ≤ 25/50; ≤ 75/150 for DUT-E 2Bio CAN
Probe length, mm …………………………………………….. 700, 1000 (can be manufactured up to 6000 mm on request; up to 10 000 mm for Ø8 mm probe versions manufactured after 01.02.2026)
Output signal…………………………………………………….. CAN j1939/S6, RS-232/485 Modbus, voltage or frequency, current
Wireless data specification ………………………………… Bluetooth 5.X S7 technology — DUT-E 2Bio S7
Specifications
| Operation principle | Capacitive |
| Measurement inaccuracy | ±1.0% |
| Supply voltage, V | 10 .. 45, protection up to 100 (DUT-E 2Bio); built-in battery (DUT-E 2Bio S7) |
| Operation temperature, °С | –40 .. +85 (DUT-E 2Bio); –30 .. +80 (DUT-E 2Bio S7) |
| Current consumption (DC 24/12V), mA | ≤ 25/50; ≤ 75/150 for DUT-E 2Bio CAN |
| Probe length, mm | 700, 1000 (can be manufactured up to 6000 mm on request; up to 10 000 mm for Ø8 mm probe versions manufactured after 01.02.2026) |
| Output signal | CAN j1939/S6, RS-232/485 Modbus, voltage or frequency, current |
| Wireless data specification | Bluetooth 5.X S7 technology — DUT-E 2Bio S7 |
