Patent ID: 8010303
Filing Date: 2011-08-30
Classification: G01F,Y10T

Abstract:
1. A fluid flow controller comprising: a flow sensor comprising a bypass with a plurality of bypass tubes, a sensor conduit in fluid communication with the bypass, a sensor assembly operatively coupled to the sensor conduit to generate a measured signal representative of a flow rate of a fluid through the sensor conduit; a processor operatively configured to receive the measured signal and to generate a flow rate representation based at least partially on the measured signal and a characteristic function of the flow sensor, the characteristic function at least partially defined by a dynamic pressure of fluid flowing through the bypass; wherein the characteristic function is represented by a relationship defined during calibration of the flow sensor at a plurality of flow rates with at least one calibration fluid: where a flow regulator fluidly connected to the flow sensor and configured to receive a control signal from the processor that is at least partially based on the flow rate representation and a desired fluid flow.