Patent ID: 6910387

Claim:
A vortex flow sensor for measuring a fluid flowing in a pipe, particularly for measuring a flow velocity, a volumetric flow rate, and/or a mass flow rate of the fluid, the vortex flow sensor comprising: a flow tube connected into the pipe for conducting the flowing fluid; a bluff body disposed in the lumen of the flow tube and serving to shed Karman vortices; and a vortex sensor device responsive to pressure fluctuations caused by the vortices, said vortex sensor device including a sensor vane extending into the flowing fluid downstream of the bluff body and being moved, particularly repeatedly, by the vortices, and at least one sensing element mechanically coupled to the sensor vane and responsive to motions of the sensor vane; wherein the vortex flow sensor further comprises a first temperature sensor and at least a second temperature sensor for sensing temperatures in the flowing fluid, said first and second temperature sensors being disposed within the sensor vane and being fitted therein in such a way as not to be wetted in operation by the flowing fluid.