公开(公告)号：US11408757B2

公开(公告)日：2022-08-09

申请号：US16958936

申请日：2018-12-10

Applicant: Endress+Hauser Flowtec AG

Inventor： Ranier Höcker ,  Christian Lais

IPC: G01F1/32 ,  G01F1/325

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.