Patent ID: 7707898

Claim:
A system for determining at least one property of a fluid flow through a conduit, wherein the system comprises: a bearing, wherein: the bearing is coupled with an interior of the conduit; and the bearing comprises an inner race, wherein the inner race rotates with respect to the conduit; at least one blade member, wherein: the at least one blade member is coupled with the inner race of the bearing; the at least one blade member extends from the inner race of the bearing toward the interior of the conduit; the at least one blade member rotates with respect to the conduit when a fluid flows through the interior of the conduit; and the inner race of the bearing rotates with respect to the conduit when the at least one blade member rotates; and a monitoring device, wherein the monitoring device is configured to determine a rate of rotation of the at least one blade member with respect to the conduit, and wherein at least one property of the fluid flow may be determined based at least in part on the rate of rotation of the at least one blade member with respect to the conduit.