Fuel flow meter

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 used for consumption measurement of the following fluids: diesel fuel heating oil other liquid fuels and mineral oils with kinematic viscosity of 1.5 to 6 mm2/s. DFM is a tool for direct measurement of fuel consumption, which is used as a part of GPS tracking system, vehicle telematics system or as an stand-alone (autonomous) solution for fuel consumption monitoring. One-chamber DFM fuel flow meters are mainly intended for small and medium engines with indirect injection fuel system. Digital Counters and built-in battery All data is registered in digital Counters in internal memory of DFM fuel flowmeters. That ensures data safety and protection against tampering and interference by third party. Also, Counters are registering data even if external power supply is switched off. After the power supply is back all data is sent to telematics unit. Protection against cheating DFM has two special Counters, which register third party influence attempts on flow meter operation – “Tampering” and “Interference” Counters. “Interference” Counter protects DFM from magnetic field impact aimed on stopping fuel consumption measurement. “Tampering” Counter registers attempts of third party to tamper flow meter data by generating artificial fuel consumption (e.g. by blowing the air through measuring chamber). In both situations DFM will start recording duration of influence and will send alarm to a telematics unit.

Fuel consumption and operating time Counters

Fuel consumption

  • Instant fuel consumption, L/H
  • Hourly fuel consumption in “Forward” line
  • Hourly fuel consumption in “Return” line
  • Total fuel consumption, L
  • Total fuel consumption in “Idling” mode of engine operation
  • Total fuel consumption in “Optimal” mode of engine operation
  • Total fuel consumption in “Overload” mode of engine operation
  • Total fuel consumption in “Negative” mode of flow meter operation (return exceeds supply)

Engine operating time

  • Total operating time, h
  • Total operating time in “Idling” engine operation mode
  • Total operating time in “Optimal” engine operation mode
  • Total operating time in “Overload” engine operation mode
  • Total operating time in “Negative” flow meter operation mode
  • Total operating time of Supply chamber
  • Total operating time of Return chamber
  • Operating time of Supply and Return chambers in each mode of engine operation

Special

  • Engine operating time in “Tampering” mode, h
  • Engine operating time in “Interference” mode, h
  • Current engine operation mode as per fuel consumption rate
  • Fuel temperature
  • Temperature correction status
  • Correction coefficient value
  • Battery charge

DFM Type

Fuel counter (fuel meter) with LCD. Autonomous low-cost solution for fuel consumption measurement.

Fuel flow meter with output (interface) cable for sending signal to tracking unit. Efficient solution for online fuel consumption monitoring within telematics system.

Output signal cable + in-built LCD display. Combination of autonomous fuel counter and online solution for fuel monitoring within telematics system.

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