公开(公告)号：US20220260403A1

公开(公告)日：2022-08-18

申请号：US17627532

申请日：2020-06-18

Applicant: Endress+Hauser Flowtec AG

Inventor： Johan Pohl ,  Ennio Bitto

IPC: G01F1/84

Abstract: A Coriolis measuring sensor of a Coriolis measuring device includes: at least a pair of measuring tubes; a support body; at least one exciter; and at least two electromagnetic sensors per pair of measuring tubes, wherein the electromagnetic sensors are configured to mask interference magnetic fields and to detect local inhomogeneous magnetic fields generated by magnet devices of the sensor according to a winding direction and/or an interconnection configuration of coils of the magnet devices.

公开(公告)号：US12140465B2

公开(公告)日：2024-11-12

申请号：US17638913

申请日：2020-08-03

Applicant: Endress+Hauser Flowtec AG

Inventor： Severin Ramseyer ,  Benjamin Schwenter ,  Johan Pohl

IPC: G01F25/10 ,  G01F1/84 ,  G01N9/00

Abstract: The present disclosure relates to a Coriolis measuring sensor of a Coriolis measuring device for measuring a density or a mass flow of a medium flowing through a pipeline, including: at least one measuring tube for conducting a medium; a support body for supporting the at least one measuring tube; at least one vibration generator for generating measuring tube vibrations; at least two vibration sensors for sensing measuring tube vibrations, wherein the vibration sensors each have at least one permanent magnet and at least one sensor coil, and wherein the vibration generator in each case has at least one permanent magnet and at least one exciter coil, characterized in that the Coriolis measuring sensor includes an amplitude sensor designed to sense a vibration amplitude of the measuring tube vibrations.

公开(公告)号：US20240344869A1

公开(公告)日：2024-10-17

申请号：US18290957

申请日：2022-07-04

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Johan Pohl ,  Alfred Rieder

IPC: G01F1/84

CPC classification number: G01F1/8431 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/8477

Abstract: A method for operating a Coriolis mass flowmeter having at least one vibratable measuring tube for conducting a medium includes exciting a first symmetrical bending vibration mode of the at least one measuring tube, and exciting a second symmetrical bending vibration mode of the at least one measuring tube. A first mass flow rate measurement value is determined on the basis of a first Coriolis deformation of the at least one measuring tube and a first stored mode-specific zero point error value. A second mass flow rate measurement value is determined on the basis of a second Coriolis deformation of the at least one measuring tube and a second stored mode-specific zero point error value. A zero point deviation value of the mass flow rate measurement is determined as a function of a deviation between the first mass flow rate measurement value and the second mass flow rate measurement value.

公开(公告)号：US20240210228A1

公开(公告)日：2024-06-27

申请号：US18563153

申请日：2022-04-20

Applicant: Endress+Hauser Flowtec AG

Inventor： Alfred Rieder ,  Rémy Scherrer ,  Johan Pohl

IPC: G01F1/84 ,  G01F25/10

CPC classification number: G01F1/845 ,  G01F1/8436 ,  G01F25/10

Abstract: Monitoring a mass flowmeter includes ascertaining a resonant frequency of a bending oscillation, wanted mode, and a density measured value of a medium as a function of the frequency. A bending oscillation is excited outside of resonance with an excitation signal having an amplitude and a frequency (μ times the resonant frequency of the bending oscillation, wanted mode). An amplitude of a sensor signal of the bending oscillation outside of resonance is ascertained. A value of an integrity function of the measuring tube depending on a ratio of the sensor signal amplitude to the excitation signal amplitude of the bending oscillation is ascertained. The integrity function depends further on a density term of a transfer function that models contributions of a plurality of oscillation modes to the sensor signal. This function is reduced to reference conditions, and/or transformed to an integrity value, which has no cross sensitivities for media density.

公开(公告)号：US20240344870A1

公开(公告)日：2024-10-17

申请号：US18294811

申请日：2022-07-22

Applicant: Endress+Hauser Flowtec AG

Inventor： Johan Pohl ,  Rémy Scherrer ,  Hao Zhu

IPC: G01F1/84 ,  G01N9/32

CPC classification number: G01F1/8436 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/8459 ,  G01N9/32

Abstract: A method for operating a Coriolis measurement device comprises: recording the measured voltages from the sensors and creating an asymmetric sequence of values using the amplitudes of the measured voltages for the purpose of diagnosing the Coriolis measurement device; checking whether the asymmetric sequence of values satisfies at least one invalidity criterion; and creating a stabilized asymmetric sequence of values on the basis of the asymmetric sequence of values by replacing asymmetric measured values with substitute values. While an invalidity criterion is satisfied a last valid measured value of the asymmetric sequence of values is used as the current value of the stabilized asymmetric sequence of values, or the stabilized asymmetric sequence of values is set to a predetermined value, a first invalidity criterion being based on a scattering parameter of the asymmetric value exceeding a first limit value.

公开(公告)号：US20220412785A1

公开(公告)日：2022-12-29

申请号：US17757120

申请日：2020-11-20

Applicant: Endress+Hauser Flowtec AG

Inventor： Alfred Rieder ,  Robert Lalla ,  Marcel Braun ,  Ennio Bitto ,  Johan Pohl

IPC: G01F1/84 ,  G01R33/00 ,  G01R33/07

Abstract: The measuring system comprises a vibration-type measuring sensor, a sensor housing, a magnetic-field detector, and measuring-system electronics electrically coupled both to an oscillation exciter and to oscillation-sensing devices of the measuring sensor. The measuring sensor is inside the sensor housing and the magnetic-field detector is outside the sensor housing. The magnetic-field detector is designed to convert changes in the magnetic field into a magnetic-field signal having an amplitude dependent on a magnetic flux through the magnetic-field detector and/or on an area density of said magnetic flux. The measuring-system electronics are designed to determine, on the basis of oscillation measurement signals of the measuring sensor, the mass-flow-rate measurement values representing the mass flow rate and to at least qualitatively determine, on the basis of the magnetic-field signal, whether an external magnetic field is established inside the measuring sensor.

公开(公告)号：US20220357257A1

公开(公告)日：2022-11-10

申请号：US17634460

申请日：2020-07-10

Applicant: Endress+Hauser Flowtec AG

Inventor： Alfred Rieder ,  Martin Josef Anklin ,  Severin Ramseyer ,  Benjamin Schwenter ,  Marco Oliver Scherrer ,  Johan Pohl ,  Dirk Butzbach

IPC: G01N9/32 ,  G01F1/84 ,  G01F15/02

Abstract: The present disclosure relates to a method for calculating a quality pertaining to at least one measuring tube of a Coriolis measuring device for measuring a density or a mass flow of a medium flowing through the measuring tube, wherein a determination regarding a state of the measuring tube can be made by determining various vibration properties.

公开(公告)号：US20240027251A1

公开(公告)日：2024-01-25

申请号：US18256858

申请日：2021-11-26

Applicant: Endress+Hauser Flowtec AG

Inventor： Ennio Bitto ,  Benjamin Schwenter ,  Marc Werner ,  Johan Pohl

IPC: G01F1/84

CPC classification number: G01F1/8477 ,  G01F1/8422 ,  G01F1/8427

Abstract: A modular Coriolis flowmeter includes: a measuring tube module, including a measuring tube for guiding the medium, an excitation magnet on a vibration exciter for exciting the measuring tube, and a sensor magnet on a vibration sensor for detecting a vibration of the measuring tube; a receiving module including a receptacle for receiving the measuring tube module, an excitation coil on the vibration exciter, a sensor coil on the vibration sensor, and a receiving module body, including a ferromagnetic material and an opening, wherein a coil holder for the excitation coil and/or sensor coil is disposed in the opening, the coil holder including a coil holder body including an electrically insulating material.

公开(公告)号：US11841258B2

公开(公告)日：2023-12-12

申请号：US17627532

申请日：2020-06-18

Applicant: Endress+Hauser Flowtec AG

Inventor： Johan Pohl ,  Ennio Bitto

IPC: G01F1/84

CPC classification number: G01F1/8427 ,  G01F1/8422 ,  G01F1/8431 ,  G01F1/8459

Abstract: A Coriolis measuring sensor of a Coriolis measuring device includes: at least a pair of measuring tubes; a support body; at least one exciter; and at least two electromagnetic sensors per pair of measuring tubes, wherein the electromagnetic sensors are configured to mask interference magnetic fields and to detect local inhomogeneous magnetic fields generated by magnet devices of the sensor according to a winding direction and/or an interconnection configuration of coils of the magnet devices.

公开(公告)号：US20230168115A1

公开(公告)日：2023-06-01

申请号：US17995176

申请日：2021-03-08

Applicant: Endress+Hauser Flowtec AG

Inventor： Johan Pohl ,  Hao Zhu

IPC: G01F1/84 ,  G01F25/10 ,  G01F15/02

CPC classification number: G01F1/8436 ,  G01F1/8427 ,  G01F1/8422 ,  G01F25/10 ,  G01F15/022 ,  G01F1/8477 ,  G01F15/06

Abstract: A method for operating a Coriolis measurement device comprises the following steps: recording the measured voltages of sensors for sensing measuring tube vibrations and creating an asymmetric sequence of values by way of the amplitudes of the measured voltages for the purpose of diagnosing the Coriolis measurement device, recording at least one stabilization variable and creating a stabilized asymmetric sequence of values based on the stabilization variable, wherein the stabilization variable is one of the following variables or a first or further temporal derivative thereof: a resonant frequency of the measuring tube containing medium or a variable derived therefrom, time or phase difference between measurement signals from the first sensor and the second sensor or a variable derived therefrom, temperature of the measuring tube wall, temperature difference between two measurement points of the measuring tube wall.