Flowtrecs APP for Android DIESEL

Wireless Fuel Computer for Android - Diesel Version (Single Engine)

Flowtrecs APP Diesel is a modern, wireless fuel consumption measuring system designed specifically for motorboats and yachts equipped with a single diesel engine (with a fuel return line). It turns your Android device (phone or tablet) into a professional board computer.

Unlike standard petrol versions, this system includes two flow sensors and a dedicated Bluetooth transmitter unit. It measures both the fuel flow to the engine and the return flow to the tank (differential measurement), calculating the real-time net consumption with high reliability.

The system uses reliable and durable aluminum alloy sensors with sapphire bearings. The data is displayed directly on your mobile device via the free Flowtrecs App (available on Google Play), allowing you to optimize your speed for maximum fuel savings without installing expensive dedicated screens.

Main features:

1. Differential Fuel Measurement – precise net consumption for Diesel engines.
2. Current fuel consumption (l/h)
3. Total fuel consumption
4. Fuel Economy indicator (km/l or l/km)
5. Fuel in tank (remaining) and Range
6. Speed (via GPS)
7. Battery Voltage
8. Engine hour counter (MTH)
9. MOB function (Man Overboard)
10. Units selection: km/h, knots, l/h, gal/h (UK/US)
11. Engine speed (RPM) — requires a suitable engine-speed signal

Package includes:

• 1 x Wireless Bluetooth Interface for Diesel (12V)
• 2 x FS-40 Flow Sensors (1 x Feed & 1 x Return)
• User Manual
• Cable ties
• Note: Tablet/Smartphone is NOT included.

IMPORTANT NOTICE - SENSOR SELECTION FOR DIESEL:

For Diesel engines equipped with a fuel return line, selecting the correct sensors requires knowing your fuel pump's capacity, not just the engine's fuel consumption.

In diesel systems, the fuel pump circulates much more fuel than the engine actually consumes (the excess returns to the tank). Therefore, the flow sensors must handle the full flow rate of the feed pump.

Example: if an engine consumes 50 l/h while its feed line carries 100 l/h, the feed sensor must accommodate 100 l/h, not just the 50 l/h consumed. XL may be suitable. We confirm the final selection after checking the minimum and maximum flow in both the feed and return lines and the installation requirements, including allowable pressure loss.

Installation Notes:

• RPM readings: An additional Hall sensor may be required if the engine does not provide a suitable electronic RPM signal.
• Pulsation: Depending on the condition of your engine's feeding pump, additional components like one-way valves or pulsation dampers may be necessary to stabilize readings.

Available Flow Sensor Versions (per sensor):

• S for engines 20 - 60 HP (0.5 - 20 l/h) (1.2 mm nozzle diameter)
• M for engines 60 - 130 HP (1 - 40 l/h) (2 mm nozzle diameter)
• L for engines 130 - 250 HP (1.5 - 90 l/h) (3 mm nozzle diameter)
• XL for engines 250 - 300 HP (2 - 120 l/h) (4 mm nozzle diameter)
• XXL for engines 300 - 350 HP (3 - 180 l/h) (4.5 mm nozzle diameter)
• 3XL for engines 350 HP and more (5 - 300 l/h) (6 mm nozzle diameter)

Live fuel-consumption and fuel-economy readings help you adjust speed, trim and load distribution. Choosing efficient settings can reduce fuel use and running costs; savings depend on the boat, conditions and the skipper’s adjustments.

After purchasing, please specify your engine model and pump capacity in the order comments, and we will verify the best sensor fit for you.

Download the App:

► Download Flowtrecs App (Google Play)