Does ship rolling affect fuel consumption measurement?

Fuel flow measurement is independent of tank shape and ship rolling because consumption is measured in the fuel line rather than inferred from changing tank level.

Can the system work with NMEA 2000 equipment?

Yes. Supported fuel-meter configurations can use an NMEA 2000 interface option so fuel data can work together with compatible NMEA 2000 onboard equipment.

How are high-power main engines monitored?

A typical configuration uses one high-flow Direct meter in the supply line and one in the return line; actual consumption is calculated from the difference.

Can I monitor fuel remaining in each tank?

Yes. Eurosens Dominator capacitive level sensors are used for fuel-tank level / calibrated volume.

Can wastewater and freshwater tanks be monitored?

Yes. Eurosens MWS 2 radar liquid-level sensors are used for clean-water and wastewater tanks.

Can the system monitor vessel bunkering / refueling?

Yes. An optional bulk fuel meter can be installed in the bunker receiving line to record how much fuel is transferred onboard, the transfer flow and the timing of the bunkering operation.

Marine Fuel & Vessel Monitoring

Fuel & Vessel Monitoringfor Boats and Ships

Track the vessel, measure actual fuel consumption of every engine and generator, monitor fuel and service tanks, and integrate the data with NMEA 2000 or a remote telematics platform.

Main + auxiliary engines
Fuel + water tanks
NMEA 2000 option
Cellular + satellite telemetry
Bunkering control option

Configure My Vessel Monitoring System See System Architecture

Main engine

2× Direct

Aux engine / genset

Delta

Fuel tanks

Dominator

Water / wastewater

MWS 2

NMEA 2000 / CAN

Remote tracker

Cellular / satellite

What the System Monitors

One Vessel. One Monitoring Architecture.

Layer	What is monitored	Typical data
Navigation	Vessel movement	Location, route, speed, activity / operating mode
Bunkering / fuel receiving	Fuel transferred onboard	Total received volume, instantaneous flow, start/stop time, duration
Fuel consumers	Main engines, auxiliary engines, gensets, boilers	Instant flow, total consumption, runtime / operating data
Fuel inventory	Fuel tanks	Level and calibrated volume
Service tanks	Fresh water / wastewater	Level / volume, high-level condition
Onboard network	NMEA 2000 / CAN equipment	Fuel data available to compatible onboard equipment
Remote telemetry	GSM / satellite tracker	Data transfer to monitoring platform / control center

Interactive Vessel Architecture

Product Names Are the Result of the Architecture

Main engine

2 × Eurosens Direct high-flow meters

Main Engines

High-Flow Measurement for Main Propulsion Engines

Supply flow−Return flow=Actual main-engine fuel consumption

For high-flow main engines, the typical marine configuration is a pair of high-capacity Eurosens Direct meters — one on the fuel supply line and one on the return line.

Model	Flow range	Role
Direct 1500	30–1,500 L/h	High-flow main engine / large diesel consumer
Direct 3000	60–3,000 L/h	Higher-flow main engine
Direct 5000	250–5,000 L/h	Very high-flow main engine / industrial marine diesel

±1% maximum measurement error; 10–50 V supply; −40…+85 °C; IP67; RS485 / MODBUS / CAN and NMEA 2000 option; threaded and flange connection options. Final model selected against actual supply and return flows.

Auxiliary Engines, Gensets & Boilers

Differential Measurement Without Rebuilding the Fuel Circuit

Eurosens Delta differential fuel meter for auxiliary marine engines

Key benefit

Installed in the existing supply and return lines without changing the original fuel-supply scheme.

Range

10–500 L/h

Accuracy

±1%

Temperature

−40…+85 °C

Warranty

2 years

RS485 / MODBUS / CAN SAE J1939 interfaces, temperature compensation in both measuring channels. Where air / gas bubbles are present in the return line, an optional Eurosens Deaerator is installed before the return chamber.

Positioned for auxiliary / medium-flow consumers and selected propulsion engines where its flow range is appropriate — not the universal choice for every marine engine.

Discuss My Auxiliary Engine

Fuel Tank Inventory

Know How Much Fuel Remains in Every Tank

Eurosens Dominator fuel level sensor for vessel fuel tanks

Flow meters answer "how much was consumed". Dominator answers "how much fuel is currently in the tank" — complementary, not competing, measurement methods.

· Capacitive fuel level sensor, modular sensor / electrode design
· Tank calibration table converts level to volume
· Universal LLS / MODBUS / CAN J1939 protocols
· ±1%; 10–50 V; −40…+85 °C; IP67
· RS232/RS485, CAN and analog/frequency versions available

Discuss My Fuel Tanks

Fuel flow meter	Fuel level sensor
Measures fuel passing through the engine fuel line	Measures current fuel level / volume in the tank
Consumption measurement is not based on tank geometry	Provides current onboard fuel inventory
Not dependent on ship rolling	Shows refilling / draining and remaining stock
Best for actual consumption by consumer	Best for tank balance and inventory

Consumption + Inventory = A Complete Fuel Picture

Water & Wastewater Tanks

Non-Contact Level Monitoring for Service Tanks

Eurosens MWS 2 radar liquid level sensor

Eurosens MWS 2 mounted through a plastic tank wall, dead-zone diagram

· Contactless distance / liquid-surface measurement
· Measuring range 100–10,000 mm
· 10–50 V; −40…+85 °C; IP67
· RS485 output, LLS and MODBUS RTU protocols

Can measure through plastic walls transparent to electromagnetic waves, enabling selected plastic-tank installations without drilling — engineering confirmation required for the exact tank material and geometry.

Discuss My Service Tanks

Optional Bunkering Control

Measure Every Bunkering Operation

Bunker source / shore or barge→Transfer hose→Bulk meter→Vessel fuel tanks

A bulk fuel meter installed in the vessel bunker receiving line measures the fuel transferred onboard during bunkering — visible in the same monitoring environment as engine consumption and tank inventory.

Total fuel received, L / m³

Instantaneous transfer flow, L/min

Bunkering start / stop time

Bunkering duration

Presented as an operational bunkering-control instrument. "Custody transfer", "fiscal meter" or billing-accuracy claims require confirmation for the exact model and target market. Exact bulk-meter model, flow range, connection and certification are project-specific.

Ask About Bunkering Control

NMEA 2000 Integration

Fuel Monitoring That Works with Your NMEA 2000 Equipment

Eurosens fuel-consumption meters can be supplied / configured with an NMEA 2000 interface option, allowing fuel-consumption data to work together with compatible NMEA 2000 onboard equipment and the vessel's standard marine CAN network.

NMEA 2000 OPTIONWORKS WITH NMEA 2000 EQUIPMENTUSE THE EXISTING MARINE CAN NETWORK

NMEA 2000 drop connection	Example role
Eurosens fuel meter	Fuel flow / consumption data
Marine multifunction display	Onboard visualization
Chartplotter / instrument display	Display of compatible vessel data
NMEA 2000 gateway	Network / telemetry integration
Other NMEA 2000 equipment	Shared onboard marine network

NMEA 2000 is an interface option for supported fuel-meter configurations, not a native feature of every Eurosens product.

Tell Us Your Onboard Equipment

Remote Monitoring

From Engine Room to Shore

Onboard

Eurosens sensors / flow meters → CAN / RS485 / NMEA 2000 → onboard equipment.

Remote

Eurosens sensors / flow meters → telematics gateway / GPS tracker → GSM or satellite → monitoring platform / dispatch center.

Real Installations

Marine Use Cases

Auxiliary marine engine — Yanmar

Eurosens Delta CAN installed on a Yanmar marine diesel without changing the original supply/return fuel-circulation scheme.

Eurosens Delta CAN · CAN

Optional Deaerator

Removes gas impurities / bubbles from the return fuel line before the Delta return chamber — an optional engineering accessory, not a mandatory component for every installation.

Additional marine case photography (river cargo vessel, tug / workboat, fishing vessel, passenger ferry, bunkering operation) is being added to this portfolio as project photography is approved.

Discuss My Vessel

Integration

Designed for Marine and Telematics Ecosystems

NMEA 2000CAN SAE J1939RS485MODBUS RTUPulse

Marine Trust

Measurement Equipment for Professional Marine Installations

River Register

Measuring instrument approval — Belarus

Measuring instrument approval — Kazakhstan

Measuring instrument approval — Russia

UNECE / EMC documentation (where applicable)

Eurosens fuel flow meters used in this solution are presented as River Register certified and included in measuring-instrument registers in Belarus, Kazakhstan and Russia. Only certificates that apply to the specific product and current modification offered for the target market are shown — not every sensor in the complete system carries the same marine approval.

Documentation Center

Documents for Marine Integrators

Direct 1500/3000/5000Specification, manual, protocol documentation DeltaSpecification, manual, CAN J1939 messages DominatorSpecification, manual, RS485 protocol, certificates MWS 2Specification, manual, RS485 / MODBUS protocol

FAQ

Questions from Vessel Operators and Integrators

Flow meters measure actual fuel consumed by individual engines and other consumers; level sensors show current tank inventory. Together they provide consumption plus stock balance.

Final step

Tell Us About Your Vessel — We'll Configure the Monitoring System

Engines, tanks and onboard network — enough for Eurosens engineering to preselect meters, level sensors and interfaces.