Patent ID: 6796173
Filing Date: 2004-09-28
Classification: G01F

Abstract:
Fuel flowmeter apparatus comprising a first flowmeter, partially cylindrical housings, rotating impellers having meshed lobes rotatable in the partially cylindrical housings joined in a case having an inlet at one side and an outlet at an opposite side, fuel moving in the inlet and filling voids between the lobes in the impellers and moving cylindrically around opposite partially cylindrical walls and turning the impellers until reaching the outlet, the inlet and the outlet having flow conditioners for smoothing flow, reducing turbulence and promoting lamellar flow into and out of the case, a magnetic marker on at least one of the impellers, a transmitter mounted on the case, the transmitter having a Hall effect sensor for sensing passage of the marker as a pulse, a first signal conditioning software connected to the Hall effect sensor for adjusting transmitted information according to measured pulse rate and a standard flow, the transmitter having a temperature sensor, and a second signal conditioning software connected to the temperature sensor for adjusting transmitted flow rate signals according to a difference between sensed temperature and standard temperature.