Technoton DFM D Differential Fuel Flow Meter


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Technoton DFM D Differential Fuel Flow Meter

DFM D differential fuel flow meter is designed for diesel fuel consumption measurement in fuel lines of vehicles and stationary engines, and is used as part of GPS vehicle tracking system. In addition, DFM D registers working time of engine in various modes of operation. DFM D is used for consumption monitoring of:

  • diesel fuel
  • heating oil
  • other liquid fuels and mineral oils with kinematic viscosity of 1.5 to 6 mm2/s.

DFM D fuel flow meters, which re-equipped with display, are used as a stand-alone (autonomous) solution for accounting fuel consumption, not requiring any connection to a web-server. DFM D are more suitable for modern engines (Common rail or pump injector fuel systems) of vehicles and stationary units.

Features & Benefits:

  • Built-in battery
  • Differential measurement of fuel consumption
  • Replaceable mud filter
Connecting ThreadM14x1.5
Nominal Pressure2 bar
Max. Pressure25 bar
Supply Voltage10-45 V
Overvoltage Protection≤100 V
Current Consumption25 / 50 mA (12 V / 24 V), mA
Operating Temperature-40 … +85 °C (without display)
-20 … +60 °C (with display)
Ingress Protection RatingIP54
Relative Accuracy Error per Chamber1%, not more than


ModelChamber VolumeMin. flow rate in each chamberMax. flow rate in each chamber
DFM 100D5 ml10100
DFM 250D12.5 ml50 l/h250 l/h
DFM 500D20 ml100 l/h500 l/h

Technoton DFM D Differential Fuel Flow Meter

* A symbol is not specified for differential fuel flow meters.

** For autonomous fuel flow meters Z version is not used.

*** This version is delivered upon special order. Designation U is available only for one-chamber flowmeters.

GillSC 4142 Fuel Flow Meter


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