Patent ID: 6796172
Filing Date: 2004-09-28
Classification: G01F

Abstract:
A flow sensor system for measuring the rate of flow of a fluid, the system comprising:a flow channel configured to contain the fluid flow, wherein the flow channel includes at least one side wall, and wherein the flow channel defines a central longitudinal axis, a boundary region and a free stream region, a monolithic substrate providing a plurality of paths, each path conducting a signal, the substrate disposed in the flow channel; a plurality of transducers disposed on the substrate in the flow channel, the transducers configured to respond to the fluid flow by modifying the signals in relation to the fluid flow, the transducers arranged with at least one of the transducers disposed closer to the central axis than at least one other transducer, at least one transducer disposed on the substrate in the free stream region and a signal processor coupled to at least two of the signals, the signal processor calculating the rate of flow of the fluid as a function of the at least two signals.