The fuel flow meter of Mass Flow online measures the differential fuel utilization of vehicles, where if is possible to utilize the single-chamber fuel meter. It can be utilized with vehicle tracking systems and fuel monitoring systems equipped on motor vehicles with the modern Euro Tier of 3,4 or 5 diesel engines. The unit has a strong metal moulded case. It also has flow meter design that gives a fuel flow even when measuring ring has stopped.The device can be mounted in any position and it consist of built-in fuel filter. Its sustainable product design leads to low power consumption. The flow ranges model is DFM-100D with minimum of 10 l/h and maximum of 100 l/h. It has engine that accommodates 100 kW or 134 hp.