公开(公告)号：US20240418552A1

公开(公告)日：2024-12-19

申请号：US18704885

申请日：2022-10-25

Applicant: Endress+Hauser Flowtec AG

Inventor： Rainer Höcker ,  Carsten Hersberger

IPC: G01F1/74 ,  G01F1/36 ,  G01F1/44 ,  G01F1/88 ,  G01F15/04

Abstract: A method for determining a gas phase mass fraction or mass flow rate of a multi-phase medium flowing in a measuring tube, which includes a break-away edge exposed to the flow and three pressure taps, each influenced differently by the break-away edge, the method including: determining a first pressure drop between the first and second pressure taps; determining a second pressure drop between the third pressure tap and one of the first or second pressure taps; and determining the mass fraction or mass flow rate of the gas phase from the first and second pressure drops, the first pressure tap arranged upstream of the break-away edge and both the second and third pressure taps downstream thereof, one normal vector substantially axis-parallel to the second pressure tap and one normal vector perpendicular to the third pressure tap, the second pressure tap point positioned at or close to a pressure minimum.