Abstract: A fuel flowmeter has a flowmeter with rotating impellers with meshed lobes rotatable in partially cylindrical housings joined in a case having an inlet at one side and an outlet at an opposite side. Fuel moves in the inlet filling voids between lobes in both impellers and moves cylindrically around opposite partially cylindrical walls and turning the impellers until reaching the outlet. Flow conditioners in the inlet and outlet allows smooth flow, reducing turbulence and promoting lamellar flow into and out of the case. One of the rotors may have a magnetic marker. A transmitter with a Hall effect sensor is mounted on the case. A signal conditioning software is connected to the Hall effect sensor for adjusted transmitted information according to measured pulse rate and a standard flow.