Marine flow meter DFM 900D

for work boatsfor tugboatsmachine

Overview
DFM 900D from Technoton is a differential fuel flow meter designed for engines with typical consumption of 100–120 L/h and supports flow rates per chamber from 150 to 900 L/h. It fills the capacity gap between the DFM 500D and the DFM Marine series and can operate as a standalone meter or be integrated into fleet telematics solutions for reporting and analysis.

Designed for heavy-duty applications

• 300–400 kW diesel generator sets (gensets)
• Mid-size tugboats
• Heavy excavators and mining dump trucks (40–60 tons)
• Large bulldozers
• Railway maintenance and track machines

Key operational notes
In typical operation these machines burn around 100 L/h while flow in the supply line can reach up to 800 L/h. Where installers previously paired two single-chamber meters in differential mode, DFM 900D reduces space, connection count and installation time by combining the function into a single compact unit.

Fuel monitoring and telematics
DFM 900D provides measured fuel burn (not estimates). It transmits fuel data to telematics platforms for consumption monitoring, supports more accurate CO₂ emissions calculations, and enables remote diagnostics and predictive maintenance by detecting abnormal flow patterns.

DFM 900D technical specifications
Parameter — Value
Minimum flow per chamber — 150 L/h
Maximum flow per chamber — 900 L/h
Nominal diameter — DN 15 mm
Connection thread — G 1/2"
Measuring chamber material — Brass (machined from solid stock)
Calibration interval — 900,000 liters

DFM 900D within the Technoton lineup
Model — Max flow per chamber — Engine consumption — Typical applications
DFM 100D — 100 L/h — 10–15 L/h — Pickups, small tractors, light trucks
DFM 250D — 250 L/h — 20–30 L/h — Mid-size tractors, long-haul trucks, mid-range gensets, small boats
DFM 500D — 500 L/h — 50–70 L/h — Large tractors, agricultural machinery, small tugboats, diesel generator sets
DFM 900D — 900 L/h — 100–120 L/h — 300–400 kW gensets, mid-size tugboats, heavy construction equipment, railway machinery, mining equipment

Use cases

• Gensets: Containerized and stationary 300–400 kW diesel generator sets requiring compact fuel monitoring.
• Marine: Mid-size tugboats, workboats and river dry cargo ships with tightly routed rigid fuel lines.
• Construction and mining: Heavy excavators, mining dump trucks and bulldozers where fast field installation reduces downtime.
• Railway equipment: Motor trolleys, shunting vehicles and track maintenance machines with engines consuming 100–120 L/h.

Choosing a fuel flow meter: DFM 900D or two DFM Marine 1000 meters?
Choose DFM 900D when:

• installation space is limited and a compact meter is required
• installation speed matters (single device installs faster)
• fuel supply and return lines are located close to each other

Choose two DFM Marine 1000 meters when:

• supply and return lines are far apart
• extra headroom is needed for supply-line flow
• there is sufficient space to mount two devices

Caractéristiques / spécifications techniques

• Model: DFM 900D
• First differential fuel flow meter for flow rates up to 900 L/h
• Intended engine consumption range: 100–120 L/h (typical)
• Minimum flow per chamber: 150 L/h
• Maximum flow per chamber: 900 L/h
• Nominal diameter: DN 15 mm
• Connection thread: G 1/2"
• Measuring chamber material: Brass (machined from solid stock)
• Calibration interval: 900,000 liters
• Applications: 300–400 kW gensets, mid-size tugboats, heavy construction and mining equipment, railway machinery