DFM fuel flow meter is designed for fuel consumption measurement of vehicles and stationary machines, and for monitoring machinery operation hours in different engine working modes. DFM also can be used for monitoring of heating oil and other liquids with kinematic viscosity of 1.5-6 mm2/s.DFM fuel flow meter is designed for fuel consumption measurement of vehicles and stationary machines, and for monitoring machinery operation hours in different engine working modes. DFM also can be used for monitoring of heating oil and other liquids with kinematic viscosity of 1.5-6 mm2/s.