Flow meter device according to the vortex measuring principle, measuring tube for same, and method for measuring the flow rate or the flow speed of a medium
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United States of America Patent
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Aug 9, 2022
Grant Date -
Nov 19, 2020
app pub date -
Dec 10, 2018
filing date -
Dec 29, 2017
priority date (Note) -
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Abstract
A measuring tube for guiding a fluid for a flow meter device according to the vortex measuring principle, wherein the measuring tube has an inflow-side opening in an inflow-side end face and an outflow-side opening in an outflow-side end face, between which the measuring tube extends in the axial direction includes: a bluff body which is arranged in the measuring tube, wherein the bluff body functions to bring about a Kármán vortex street with a flow-rate-dependent vortex frequency when a fluid flows through the measuring tube; at least one vortex detector for detecting vortexes of the vortex street and for providing vortex-dependent signals; and a control valve between the vortex detector and the outflow-side end face and axially spaced apart from the vortex detector, which annularly constricts the flow cross-section of the measuring tube.
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