Fuel Flow Meter DFM

DFM Flow Meters - Fuel flow meter DFM is designed for measuring fuel consumption by engine of the machine 

    • Trucks;
    •Tractors ;
    • Plant Machinery -Loaders,Graders,Dozers;
    • Genset;


Actual fuel consumption and Vehicle working time



Diesel fuel consumption measuring



Fuel accounting both autonomously

DFM Flow Meters - Ordering Information

The range of DFM devices includes the following models:

Autonomous fuel flow meter with display (fuel counter);
Fuel flowmeter with pulse interface;
Differential fuel flow meter.





DFM Models Choice for Internal Combustion Engine/Boiler


Engine power,
Boiler heat
productivity, kW
inline fuel meters
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
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

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,
  MIN flow rate,
  MAX flow rate,
DFM 50 AK, B, C, CK   6   0.5   1   50   1
DFM 90 AP   6   0.5   3   90   2
DFM 100 AK, B, C, CK   6   0.5   2   100   1
DFM 220 AP   8   2   8   220   2
DFM 250 AK, C, CK   8   2   5   250   1
DFM 500 AK, C, CK   12   5   10   500   1

Differential fuel flow meters measurement scope and accuracy.


Warranty period is 12 months from the date of purchase.