Fuel Volume
Eurosens Dominator
Measures fuel level / volume in each tanker compartment. Use the data to track loading, transit changes and unloading.
Fuel Delivery & Tanker Cargo Monitoring
Know What Was Loaded.Know What Was Delivered.
A multi-layer monitoring system for fuel tankers: compartment volume, hatch and valve access, bottom-valve operation, complete drain confirmation and telematics integration.
Every compartment
Independent cargo-volume and discharge monitoring.
4 control layers
Volume + access + valve operation + drain completion.
RS485 network
One industrial sensor network for wired devices.
Hazardous-area architecture
Eurosens Defender MAX intrinsic-safety barrier.
Compartment 1
VolumeAccessValveDrain
Compartment 2
VolumeAccessValveDrain
Compartment 3
VolumeAccessValveDrain
Compartment 4
VolumeAccessValveDrain
Compartment 5
VolumeAccessValveDrain
Distribution box
Access
5-compartment semi-trailer — every zone independently monitored
What the System Controls
One Tanker. Four Independent Checks for Every Compartment.
Compartment Access
Eurosens Degree RS/CAN or Degree BT
Monitors hatch / cover angular position. Can also monitor the fuel-distribution-box lid.
Bottom-Valve Operation
Eurosens DPS
Pressure data is used to record bottom-valve opening time.
Complete Drain Confirmation
Eurosens LPS
Detects whether fuel is still present in the drain line after unloading.
These four sensors are not interchangeable alternatives — they solve four different control tasks and form one chain of evidence.
Interactive Tanker Diagram
Tap Any Monitored Zone
Fuel-level probe
Volume in compartment
One Compartment, Four Checks
From Compartment Volume to the Last Drop in the Drain Line
- 01
Before departure
Fuel volume is known; hatches and distribution box are closed.
- 02
In transit
Any unexpected change in level or unauthorized hatch / box access becomes visible to the telematics system.
- 03
At delivery
Bottom-valve opening is registered; fuel leaves the compartment.
- 04
After unloading
LPS confirms whether fuel is still present in the drain line.
Eurosens System Components
Five Devices. One RS485 Sensor Network.
Fuel Volume
Eurosens Dominator
- · Capacitive modular fuel-level sensor, one per compartment
- · Interfaces: analog/frequency, RS232/RS485, CAN — LLS, MODBUS, CAN J1939
- · 10–50 V; ±1%; −40…+85 °C; IP67
- · Modular design, replaceable / extendable electrodes
Hatch & Cover Position
Eurosens Degree RS/CAN
- · Digital tilt-angle sensor for hatch openings in fuel tankers
- · RS485 or 29-bit CAN
- · 0…180° by 3 angles; ±1°; −40…+85 °C; IP67
- · Motion detection and position-change registration; Ex-certified execution available
Wireless Access Alternative
Eurosens Degree BT
- · Wireless tilt-angle sensor, Bluetooth Low Energy
- · Self-powered by built-in ER14505 AA battery
- · ±1° inclination error; −40…+85 °C; IP67
- · Ex-certified execution available for the applicable modification
Bottom-Valve Operation
Eurosens DPS
- · Pressure sensor; used on tankers with pneumatic bottom-valve control
- · Analog, RS485 and CAN variants; SAE J1939 and LLS protocols
- · 8–32 V; −40…+85 °C; IP67
- · Pressure range and opening-detection threshold selected per project
Complete Drain Confirmation
Eurosens LPS
- · Detects fuel residue in the drain / outlet line
- · Installed behind the drain cock, as a spacer in the outlet assembly
- · RS485, LLS protocol
- · Output: fuel present / fuel absent
5-Compartment Example
A 5-Compartment Tanker Can Have 21 Monitored Points
| Device | Qty in example | Function |
|---|---|---|
| Eurosens Dominator | 5 | Fuel level / volume — one per compartment |
| Eurosens Degree | 5 | Compartment hatch / lid position — one per compartment |
| Eurosens DPS | 5 | Bottom-valve operation — one per compartment |
| Eurosens LPS | 5 | Fuel presence / complete-drain confirmation — one per outlet |
| Eurosens Degree | 1 | Fuel-distribution-box lid / access |
| Total | 21 | Sensor points in the example |
This is an example configuration for a 5-compartment semi-trailer, not a universal requirement. Final configuration depends on the tanker design and project.
Configure My TankerDefender MAX
Safety Barrier. Sensor Gateway. Remote Diagnostics.
Hazardous area→Defender MAX→External RS485→GPS tracker / telematics
- · Intrinsic-safe power / signal limitation for the connected certified field devices.
- · RS485 polling of sensors in the hazardous area.
- · Sensor data forwarded to the external RS485 interface.
- · Current-consumption monitoring for remote serviceability diagnostics.
You do not need the GPS tracker to read 21 independent raw sensor streams. The system can provide only required values or generalized statuses such as "all compartments drained" or "all compartments closed".
Delivery Event Timeline
One Event History, Combined with GPS Time and Position
| Event | Data source | What the customer can verify |
|---|---|---|
| Loading | Dominator | Volume increase by compartment |
| Departure | Degree + Dominator | Compartments closed; starting cargo volume |
| Transit | Dominator + Degree | Unexpected level change or access event |
| Arrival / delivery start | GPS platform + Degree / DPS | Location + authorized access / bottom-valve operation |
| Unloading | Dominator + DPS | Volume decrease and valve-operation interval |
| Delivery complete | LPS | Drain line no longer contains fuel |
Location, geofence, timestamps, alerts and reports are functions of the connected GPS / telematics platform, enabled by Eurosens sensor data.
Real Installations
Built for Real Fuel Delivery Operations
LPS at the drain-line / outlet assembly
Real installation: Eurosens LPS mounted at a tanker outlet valve, confirming whether fuel remains in the drain line after unloading.
Bayonet-mount connector detail
Close-up of the field-serviceable connector and mount shared across the Eurosens sensor family used in this architecture.
Additional complete-tanker case photography (Dominator in a compartment, Degree on a hatch, DPS in the valve control circuit, Defender MAX installed in the equipment box) is being added to this portfolio as project photography is approved.
See Real Installation — Discuss My TankerBusiness Outcomes
From Engineering Architecture to Business Results
Cargo Accountability
Compartment-by-compartment fuel volume data throughout the route.
Unauthorized Access Visibility
Hatch / distribution-box position changes become telematics events.
Delivery Verification
Valve-operation data plus volume change and final drain-line status.
Audit Trail
The connected platform can combine sensor events with time and GPS position.
Reduced Disputes
Use measured events to investigate loading / unloading discrepancies.
Remote Diagnostics
Defender MAX current monitoring adds serviceability insight for wired field devices.
Optional Expansion
Grounding Control & Dispensing Flow Meter
Grounding Control
Optional grounding-control sensor / interlock data can be integrated according to the project.
Dispensing Flow Meter
Fuel dispensing flow-meter data can be connected to extend delivery verification. Exact meter / electronic-output adapter is selected per project.
Neither module is a standard part of every system — both are optional, project-specific extensions.
Telematics Integration
Connect the Tanker to the Telematics Platform You Already Use
Eurosens sensors→RS485 network→Defender MAX→GPS tracker / gateway→Telematics platform
GPS Tracker Manufacturers
TeltonikaQueclinkJimi IoT / ConcoxRuptelaSuntech / ST SUNLABTOPFLYtechNavtelecomGalileoskySensata / XirgoCalAmp
Telematics Platforms
WialonGeotabSamsaraWebfleetPowerfleetMotiveNavixyGpsGateTraccarflespi
Designed for integration with leading telematics ecosystems. Compatibility depends on the tracker model, interface and firmware — send us your device model and we will confirm the connection scheme.
Hazardous-Area Design
Designed for Hazardous-Area Sensor Networks
Architecture for intrinsically safe sensor connection in hazardous areas. Eurosens Degree tilt sensors are available in Ex-certified execution. For the complete system, exact Ex markings / certificates and installation zones are published for the final BOM rather than a generic system-wide statement.
Defender MAX — Ex ia IIB T6 X
Degree RS/CAN — Ex-certified execution
Degree BT — Ex-certified execution
Dominator — hazardous-environment conformity
DPS — per project execution
LPS — per project execution
Important: The presence of an intrinsic-safety barrier does not automatically certify every connected field device for every hazardous zone. The exact approved device + barrier architecture must be confirmed for the target tanker configuration and market before publication of a specific compliance claim.
Documentation Center
Documents Engineers Need to Evaluate the System
DominatorSpecification, operation manual, RS485 protocol, certificates, dimensions / CADDegree RS/CANSpecification, leaflet, operation / configuration, Ex certificate / markingDegree BTSpecification / leaflet, configuration, battery / BLE details, Ex certificateDPSSpecification, operation manual, configurator, E-mark / applicable certificatesLPSSpecification, operation manualDefender MAXSpecification, operation manual, explosion-protection documentation
FAQ
Questions from Fleet and Logistics Engineers
The architecture is modular. A 5-compartment example gives 21 sensor points. Final configuration depends on the tanker design and project requirements.
Final step
Tell Us About Your Tanker. We'll Configure the Monitoring System.
A two-step form so we can preselect the right sensor set for your compartments and telematics platform.
Send photos or a tanker drawing after submission for a more accurate configuration.