Fuel Flow Meter by Technoton

Fuel flow meter DFM is designed for diesel fuel consumption  measuring in the fuel line of the following vehicles:

  • trucks;
  • tractive vehicles;
  • tractors of various types;
  • loaders;
  • graders;
  • road-building machinery;
  • marine ships;
  • boats;
  • boilers;
  • burners;
  • technological transport;
  • fixed installations with diesel engines etc.
  Buy online Fuel Flow Meter   Fuel flow meter DFM 50AK

Inline fuel meter DFM can be applied for fuel accounting both autonomously and as a part of vehicle tracking and fuel monitoring system.

Fuel gauge DFM allows to solve the following tasks:
  • fuel consumption control;
  • fuel consumption rationing;
  • fuel theft detecting and preventing;
  • fuel comsumption optimization and real-time monitoring;
  • engine fuel consumption testing.
Fuel counter DFM 100C
Fuel meter DFM enables to receive objective information about actual fuel consumption and vehicle working time. It also permits to reduce fuel and repairing costs. It is possible to develop fuel consumption rates for selected routes and technological operations. The economic effect of using the fuel accounting devices is different at various companies, usually about 10 to 40%, depending on the baseline situation and management persistence. Differential fuel flow meter DFM 250D

Recommended Tracking Devices for Fleet Monitoring

Find the information about the compatibility of DFM and different tracking devices here. To receive more information about compatibility of other tracking devices that were not included into this table, please contact us at info@jv-technoton.com

 Fuel flowmeters DFM compatibility with tracking devices  

Ordering Information

The range of DFM devices includes the following models:
DFM fuel flow meters order information
DFM Models Choice for Internal Combustion Engine/Boiler
Engine power, kW Boiler heat productivity, kW Recommended inline fuel meters Recommended mounting kits
under 80 under 400 DFM 50 MK20
80-150 400-800 DFM 90, DFM 100 MK20, MK40
150-300 800-1500 DFM 220, DFM 250 MK40
300-600 1500-3500 DFM 500 MK45

Operating Principle

Fuel gauge DFM has three-dimension ring type measuring chamber. DFM generates an impulse, when the volume of fuel (which is equal to volume of the measuring chamber) passes through it. For detailed operating principle for every DFM model please visit product pages.

Measured Fluids

Fuel flow meter DFM can be used for consumption measuring of the following fluids:
  • diesel fuel;
  • heating oil;
  • engine oil;
  • other types of liquids with kinematic viscosity from 1.5 to 6 mm2/sec*.

* Application for more viscous liquids is also possible, but the maximum consumption may get less than critical and the pressure on the meter gets down. All the meters DFM are tested with diesel fuel. Please specify the fuel type and viscosity in your order.

The materials resistant to gasoline are used for DFM manufacturing. Use safety means in accordance with the national laws when working with gasoline.


  • protection against unauthorized interference and tampering with the meter;
  • resistant to vibration and hydraulic impacts;
  • big in-built mud filter;
  • meets road standards of electromagnetic compatibility, mechanical and climatic influences;
  • durable and precise measurement zinc-aluminum chamber;
  • full set of mounting accessories;
  • all the fuel flow meters DFM are tested on the metrologically certified installation when produced.


Connecting thread M14x1.5
Nominal pressure, MPa 0.2
MAX pressure, MPa 2.5
Supply voltage, V 10-50
Overvoltage protection, V ≤100
Current consumption, mA ≤25 (24 V) ≤50 (12 V)
Operating temperature, °C without display: from -40 to +80; with display: from -20 to +60

Choose an installation scheme

Animation shows the detailed algorithm to select proper DFM fuel flow meter model, mounting scheme, accessories and mounting kit.


DFM Installation Video

The video demonstrates how to install DFM fuel flow meter after the fuel pump.



We strongly recommend to seal pipe connections after the fuel flow meter output.

To get detailed information about DFM installation please contact Technical Support.

Measurement Scope and Accuracy

Model The nominal bore Start-up consumption, l/h MIN flow rate, l/h MAX flow rate, l/h Inaccuracy, ±%
DFM 50 AK, A232, A485, ACAN, B, C, CK, C232, C485, CCAN 6 0.5 1 50 1
DFM 90 AP 6 0.5 3 90 2
DFM 100 AK, A232, A485, ACAN, B, C, CK, C232, C485, CCAN 6 0.5 2 100 1
DFM 220 AP 8 2 8 220 2
DFM 250 AK, A232, A485, ACAN, B, C, CK, C232, C485, CCAN 8 2 5 250 1
DFM 500 AK, A232, A485, ACAN, C, CK, C232, C485, CCAN 12 5 10 500 1


Warranty period for DFM logofuel flow meters is 3 years from the date of manufacture under condition the flowmeter was re-calibrated in accordance with the values above.

Useful Links