Patent ID: 8656772

Claim:
A flow sensor assembly for measuring the flow rate of a fluid over a defined range of flow rates, comprising: a housing that defines a flow path that includes an inlet flow port, an outlet flow port, and a fluid channel extending between the inlet flow port and the outlet flow port; a flow sensor in communication with the flow path, the flow sensor configured to sense a measure related to a flow rate of a fluid flowing through the flow path over at least the predefined range of flow rates; a filter situated in the flow path, the filter having a predetermined acoustic impedance; and a processing element in communication with the flow sensor, wherein the processing element is configured to output a measure related to the flow rate of the fluid flowing through the flow path sensed by the flow sensor, and a measure related to a differential pressure produced by the fluid flowing through the flow path, the measure related to the differential pressure is based, at least in part, on the sensed flow rate.