Patent ID: 8286506

Claim:
A flow sensor apparatus for measuring a property related to fluid flow through a flow channel, the flow channel defined by flow channel walls, comprising: a housing having at least a portion that extends from a flow channel wall and into the flow channel but substantially less than all the way across the flow channel terminating at a housing distal end, whereby the housing distal end is spaced a distance from the flow channel wall; the housing defining a bypass channel; the portion of the housing that extends into the flow channel having at least one upstream tap fluidly coupled to an upstream port of said bypass channel, and at least one downstream tap fluidly coupled to a downstream port of said bypass channel; a flow sensor; and the bypass channel is configured to direct fluid from said at least one upstream tap, to the flow sensor, and then to the at least one downstream tap, wherein the flow sensor is configured to provides a measure related to the fluid flow through the flow channel.