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：US20220407536A1

公开(公告)日：2022-12-22

申请号：US17756124

申请日：2020-11-09

Applicant: Endress+Hauser Flowtec AG

Inventor： Jannis Kappertz ,  Alexander Stutz ,  Markus Wucher

IPC: H03M1/12 ,  H04L25/03 ,  H03K7/04

Abstract: A method for determining an inverse impulse response of a communication channel by means of a PAM receiver comprises the following method steps: switching on the PAM receiver; if a second PAM transceiver is switched on, setting a difference between a clock frequency of the data signal and a sampling frequency of the first PAM transceiver; comparing a symbol that is output by the interpreter with a state that is supplied to the interpreter, and outputting an error value, wherein in each case a symbol associated with a sampling clock is compared with a state associated with the same sampling clock; adapting m filter coefficients of the equalizer to minimize error values; repeating the third method step and the fourth method step until an error limit value is reached.

公开(公告)号：US20220404185A1

公开(公告)日：2022-12-22

申请号：US17638504

申请日：2020-08-03

Applicant: ENDRESS+HAUSER FLOWTEC AG

Inventor： Beat Tschudin ,  Simon Mariager

IPC: G01F1/58 ,  G01F1/60 ,  G01N11/00

Abstract: A magnetic-inductive flow meter includes: a housing; a first and a second measurement electrode in galvanic contact with a flowing medium in a pipe; a magnetic field-generating device positioned in the housing and including a measurement circuit configured to determine a first measurement variable, and wherein measurement values of the first measurement variable are measured between two measurement electrodes or at a measurement electrode in relation to a reference potential; and an evaluation circuit configured to determine a Reynolds number and/or a kinematic viscosity value of the medium using measurement values of the first measurement variable and of a second measurement variable, which differs from the first measurement variable, wherein the measurement electrodes are positioned such that, during a test measurement, quotients of current measurement values of the first and of the second measurement variable correspond bijectively with the Reynolds number of the medium in the pipe.

公开(公告)号：US11530967B2

公开(公告)日：2022-12-20

申请号：US16754107

申请日：2018-09-27

Applicant: Endress+Hauser Flowtec AG

Inventor： Ennio Bitto ,  Alfred Rieder ,  Yaoying Lin ,  Martin Josef Anklin

IPC: G01N9/00 ,  G01F1/84 ,  G01N9/32 ,  G01N11/04

Abstract: The present disclosure relates to a transducer comprising a tube, a converter unit, an electromechanical exciter arrangement for stimulating and sustaining forced mechanical vibrations of the converter unit, and a sensor arrangement for detecting mechanical vibrations of the converter unit and for generating a vibration signal representing mechanical vibrations of the converter unit. The converter unit includes two connection elements connected to a displacer element and is inserted into the tube and connected thereto. The converter unit is configured as to be contacted by a fluid flowing through the tube and enabled to vibrate such that the connection elements and the displacer elements are proportionately elastically deformed. The transducer can be a constituent of a measuring system adapted to measure and/or monitor a flow parameter of the flowing fluid and further includes an electronic measuring and operating system coupled to the exciter arrangement and the sensor arrangement of the transducer.

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：US20220334038A1

公开(公告)日：2022-10-20

申请号：US17616973

申请日：2020-05-04

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Michael Wiesmann

IPC: G01N9/32 ,  G01N11/04 ,  G01F1/84

Abstract: A measuring device for determining the density, the mass flow and/or the viscosity of a gas-charged liquid includes an oscillator, having a media-conducting measuring tube and two vibrational modes having media-density-dependent natural frequencies; an exciter for exciting the two vibrational modes; a vibrational sensor for detecting vibrations of the oscillator; and an operating and evaluating circuit to apply an excitation signal to the exciter, detect signals of the vibration sensor, determine current values of the natural frequencies of the two vibrational modes of the oscillator and fluctuations of the natural frequencies. The operating and evaluating circuit is designed to determine a first media state value, wherein the operating and evaluating circuit is furthermore designed to determine a second media state value which represents a gas charge of the medium.

公开(公告)号：US20220291031A1

公开(公告)日：2022-09-15

申请号：US17636126

申请日：2020-08-03

Applicant: Endress+Hauser Flowtec AG

Inventor： Benjamin Schwenter

IPC: G01F1/84 ,  G01F15/00 ,  G01N9/00

Abstract: A measurement tube of a Coriolis sensing element for measuring a density and a mass flow rate of a medium flowing through a measurement tube includes a measurement tube wall and a measurement tube lumen, characterized in that the measurement tube wall has a sintered ceramic material or is produced from a sintered ceramic material.

公开(公告)号：US11435219B2

公开(公告)日：2022-09-06

申请号：US15569178

申请日：2016-04-26

Applicant: Endress + Hauser Flowtec AG

Inventor： Peter Ploss ,  Stefan Rupitsch ,  Michal Bezdek ,  Thomas Frohlich ,  Beat Kissling

IPC: G01F25/10 ,  G01F1/667 ,  G01F15/02 ,  G01F1/66 ,  G01N29/12

Abstract: A method for ascertaining at least one pipe wall resonance frequency of a pipeline in the region of a measuring point by means of a field device of process measurements technology having at least a first ultrasonic transducer, which is placed on the pipeline at the measuring point, comprising steps as follows: providing a first transfer function Utransducer(f) at least of the first or a plurality of ultrasonic transducers located in the region of the measuring point; ascertaining a received spectrum Urec(f) from a received signal Urec(t) after transmission of an ultrasonic signal; ascertaining a second transfer function Umeasuring point(f) from the first transfer function Utransducer(f) of the first or the plurality of ultrasonic transducers and from the received spectrum urec(f), wherein the second transfer function Umeasuring point(f) is characteristic for the measuring point; and ascertaining the at least one pipe wall resonance frequency fres, especially a plurality of resonance frequencies, in the region of the measuring point by evaluating the second transfer function Umeasuring point(f) from step III, as well as a clamp-on, ultrasonic, flow measuring device, a method for ascertaining flow, a method for ascertaining a change of the measuring point and an identification device.

公开(公告)号：US20220236160A1

公开(公告)日：2022-07-28

申请号：US17612540

申请日：2020-04-15

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Gerhard Eckert ,  Ennio Bitto ,  Alfred Rieder ,  Marc Werner

IPC: G01N9/00 ,  G01F1/84

Abstract: A measuring transducer includes a tube assembly including two pair of structurally identical tubes, each connected at their respective ends to each of two flow dividers, thereby forming four parallel flow paths, and each including alternating, adjoining straight and arcuate segments, wherein each of the first and third arcuate segments has a segment length corresponding to an extended length of a virtual center line of the segment, an arc radius corresponding to a radius of the virtual center line and a center point angle corresponding to a ratio between the segment length and the arc radius, such that each of the first arcuate segments are identical in both shape and size, and such that each of the third arcuate segments are identical in both shape and size, wherein the measuring transducer further includes an exciter assembly and a sensor assembly, each connected to the tube assembly.

公开(公告)号：US11378432B2

公开(公告)日：2022-07-05

申请号：US16764105

申请日：2018-10-30

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Alfred Rieder

IPC: G01F1/84

Abstract: The Coriolis flowmeter according to the present disclosure includes: a measuring sensor including a bent measuring tube mirror-symmetrical with respect to a transverse plane, wherein a measuring tube center line runs in a longitudinal plane oriented perpendicular to the transverse plane, wherein an equatorial surface runs perpendicular to the longitudinal plane along the measuring tube center line; an exciter for exciting measuring tube bending vibrations; a first pair of vibration sensors for capturing the bending vibrations of the measuring tube; and an operating and evaluation circuit for driving the exciter, for capturing signals from the vibration sensors, and for determining a mass flow measured value, wherein the measuring sensor has a second pair of vibration sensors, which are arranged in a mirror-symmetrical manner with respect to the transverse plane, wherein the first pair of vibration sensors is separated from the second pair of vibration sensors by the equatorial surface.