Patent ID: 6874372

Claim:
A device for measuring the flow rate of a stream of fluid in a pipe, comprising a tubular stator intended to be fixed in the pipe so as to be traversed, in use, by said stream, a rotor axially mounted within the stator, the rotor having a central hub from which extends a plurality of blades and which is capable of being operated in rotation by said stream, like a turbine, at a velocity variable according to the flow rate, and at least one permanent magnet integral with the rotor, disposed eccentrically with respect to the axis of rotation of said rotor; there being fixed to the hub of the rotor a shaped support bush mounted rotatable about a fixed pin or shaft which extends, projecting in the opposite direction to the operational direction of flow of said stream, from a central support integral with the axial outlet portion of the stator; said at least one magnet being held in a housing defined between the support bush and the rotor.