Patent ID: 9507351
Filing Date: 2016-11-29
CPC Classification: G05D,Y10T

Claim Text:
1. A system for determining a flow rate of a compressible fluid, comprising: at least one conduit comprising a fluid inlet and a fluid outlet, the conduit defining a flow path along which the fluid flows; an inlet block comprising an inlet aperture, one or more restrictors coupled to the inlet aperture, and an inlet channel fluidly coupled to the conduit, wherein the one or more restrictors are sized and configured to prevent pressure perturbations of a magnitude that will interfere with the performance of a flow sensor when fluid flow into the system resumes after a rate of decay measurement, and wherein the one or more restrictors comprise a restrictive element disposed within the inlet aperture; and at least one pressure sensor that generates a pressure sensor signal, which is indicative of the pressure of the fluid through the conduit, the at least one pressure sensor being coupled to a controller that is operable to generate a pressure sensor based pressure measurement for the fluid, wherein the flow sensor generates a flow sensor signal that is proportional to a mass flow rate of the fluid through the conduit, the at least one flow sensor being coupled to the controller, the controller is configured to generate a flow sensor based mass flow rate for the fluid, the flow sensor based mass flow rate being determined at least in part from the flow sensor signal.