Patent ID: 7983856
Filing Date: 2011-07-19
Classification: G01F

Abstract:
1. A mass flow meter, comprising: a volumetric flow meter that includes an obstruction valve with an orifice covered by a deflectable petal that deflects as a function of fluid flow through said orifice to provide for increased flow area and thus capable of generating a signal proportional to the volumetric flow of a liquid through said flow meter, wherein a support structure is configured to fully support said entire petal as it becomes deflected to prevent damage thereto; a plurality of tubes concentrically arranged so as to share a common central axis through which said liquid flows, wherein capacitance across such tubes is measured to generate a signal proportional to the density of the liquid flowing through said flow meter; and a processor for computing a mass flow as a function of said volumetric flow signal and said density signal.