-
公开(公告)号：US12117325B2
公开(公告)日：2024-10-15
申请号：US17607962
申请日：2020-03-31
发明人： Hao Zhu , Alfred Rieder , Yaoying Lin
CPC分类号： G01F1/8436 , G01N9/002 , G01N11/16 , G01F1/8477 , G01N2009/006
摘要： The disclosure relates to a measuring device for characterizing a non-homogeneous, flowable medium, and for determining the density, the mass flow rate and/or the viscosity of the medium measuring tube for guiding the medium. includes at least one mode of oscillation, the natural frequency of which depends on the density of the medium An exciter for exciting the mode of oscillation and an operation and evaluation circuit designed to apply an excitation signal to the exciter, to capture signals from the oscillation sensor, to determine current values of the natural frequency of the oscillator and fluctuations of the natural frequency on the basis of the signals from the oscillation sensor.
-
2.发明授权公开(公告)号：US12098944B2
公开(公告)日：2024-09-24
申请号：US17754074
申请日：2020-08-20
发明人： Alfred Rieder , Hao Zhu , Wolfgang Drahm , Andreas Güttler
摘要： An arrangement includes a pipeline and a Coriolis volumetric flow meter for measuring a mass flow rate of a medium flowing through the pipeline. A first pressure sensor is attached at an inlet-side of the pipeline and a second pressure sensor is attached at an outlet-side of the pipeline, or wherein a differential pressure sensor is configured to detect a difference between an inlet-side and an outlet-side. The pressure sensors and/or the differential pressure sensor are configured to measure a media pressure and to determine, for each differential pressure, a volumetric flow velocity of the medium through the pipeline. A first monitoring sensor is attached at an inlet-side portion of the pipeline and a second monitoring sensor is attached at an outlet-side portion of the pipeline, wherein the monitoring sensors are configured to monitor a measurement variable different from the media pressure to identify a static media state.
-
3.发明申请公开(公告)号：US20220333971A1
公开(公告)日：2022-10-20
申请号：US17754074
申请日：2020-08-20
发明人： Alfred Rieder , Hao Zhu , Wolfgang Drahm , Andreas Güttler
摘要： An arrangement includes a pipeline and a Coriolis volumetric flow meter for measuring a mass flow rate of a medium flowing through the pipeline. A first pressure sensor is attached at an inlet-side of the pipeline and a second pressure sensor is attached at an outlet-side of the pipeline, or wherein a differential pressure sensor is configured to detect a difference between an inlet-side and an outlet-side. The pressure sensors and/or the differential pressure sensor are configured to measure a media pressure and to determine, for each differential pressure, a volumetric flow velocity of the medium through the pipeline. A first monitoring sensor is attached at an inlet-side portion of the pipeline and a second monitoring sensor is attached at an outlet-side portion of the pipeline, wherein the monitoring sensors are configured to monitor a measurement variable different from the media pressure to identify a static media state.
-
公开(公告)号：US10928233B2
公开(公告)日：2021-02-23
申请号：US16474732
申请日：2017-11-22
发明人： Ennio Bitto , Christof Huber , Alfred Rieder
摘要： A measuring system comprises a measuring and operation electronic unit (ME) and a transducer device electrically coupled thereto. The transducer device has two tubes through which a fluid flows and causes to vibrate, a vibration exciter, two vibration sensors on the inlet and outlet sides, respectively, for generating vibration signals, and an inlet-side temperature sensor coupled to a wall of the tube for thermal conduction and an outlet-side temperature sensor coupled to a wall of the tube for generating temperature measurement signals. The measuring and operation electronic unit feeds electrical power into the vibration exciter in order to effect mechanical vibrations of the tube. Furthermore, the ME generates a mass flow sequence, by means of each of the vibration signals and each of the temperature measurement signals in such a way that mass flow measurement values are independent of the temperature difference.
-
公开(公告)号：US10712189B2
公开(公告)日：2020-07-14
申请号：US16312137
申请日：2017-05-18
发明人： Hao Zhu , Alfred Rieder
摘要： A method serves for operating a measuring transducer of vibration-type having at least two oscillators, each of which is formed by a pair of measuring tubes, wherein the pairs of measuring tubes are arranged for parallel flow, wherein the two oscillators have mutually independent oscillator oscillations with mutually differing eigenfrequencies for corresponding oscillation modes. The method includes steps of determining a first value of a primary measurement variable, or of a variable derived therefrom, using the first oscillator, determining a second value of the primary measurement variable, or of a variable derived therefrom, using the second oscillator, checking an actual ratio between the first value and the second value by comparison with an expected ratio between the first value and the second value, and outputting a signal when the actual ratio does not correspond to the expected ratio.
-
公开(公告)号：US20190383658A1
公开(公告)日：2019-12-19
申请号：US16471648
申请日：2017-11-22
发明人： Hao Zhu , Alfred Rieder , Ennio Bitto , Gerhard Eckert
摘要： The present disclosure relates to a vibration-type sensor for measuring the density and/or the mass flow rate of a medium, having at least one first oscillator, the sensor including: a curved first measuring tube; a curved second measuring tube; at least one first elastic vibration coupler that couples the first measuring tube and the second measuring tube to each; and at least one exciter for exciting oscillator vibrations in a bending vibration mode. The oscillator has a first oscillator resonant frequency for when the measuring tubes vibrate approximately in phase in the bending vibration mode and a greater second oscillator resonant frequency for when the measuring tubes vibrate approximately in counterphase in the bending vibration mode. The first and second measuring tubes have resonant frequencies differing from their arithmetic mean by no more than 8%, no more than 4%, no more than 2% or no more than 1%.
-
公开(公告)号：US10371553B2
公开(公告)日：2019-08-06
申请号：US15125315
申请日：2015-02-23
发明人： Alfred Rieder , Hao Zhu , Ennio Bitto , Gerhard Eckert , Josef Hubensteiner , Michael Wiesmann , Yaoing Lin
摘要： transducer apparatus comprises a transducer housing, a tube, a temperature sensor as well as a temperature sensor. The tube is arranged within a cavity of the transducer housing, in such a manner that an intermediate space is formed between a wall of the transducer housing facing the cavity inner surface and an outer surface of a wall of the tube facing the cavity. Furthermore, the tube is adapted to guide a fluid in its lumen, in such a manner that an inner surface of the wall of the tube facing the lumen is contacted by fluid guided in the lumen. Each of the temperature sensors is formed by means of a temperature detector arranged within the intermediate space as well as by means of a coupling body coupling the respective temperature detector thermally conductively with the wall of the tube and is additionally adapted to register a particular measurement location temperature, and to transduce such into a corresponding temperature measurement signal, namely an electrical measurement signal representing the particular measurement location temperature.
-
公开(公告)号：US20180231411A1
公开(公告)日：2018-08-16
申请号：US15749888
申请日：2016-07-26
发明人： Hao Zhu , Alfred Rieder , Gerhard Eckert
摘要： The invention relates to a method for ascertaining a physical parameter of a gas using a measuring transducer having a measuring tube for conveying the gas, wherein the measuring tube is excitable to execute bending oscillations of different modes and eigenfrequencies, the method includes: ascertaining the eigenfrequency of the f1-mode and f3-mode; ascertaining preliminary density values for the gas based on the eigenfrequencies of the f1-mode and f3-mode; ascertaining a value for the velocity of sound of the gas, and/or, dependent on the velocity of sound and the eigenfrequency of a mode, at least one correcting term and/or density error for the preliminary density value; and/or a correcting term for a preliminary mass flow value for determining a corrected mass flow measured value based on the first preliminary density value, the second preliminary density value, the eigenfrequencies of the f1-mode and f3-mode.
-
公开(公告)号：US20170356777A1
公开(公告)日：2017-12-14
申请号：US15540048
申请日：2015-11-18
发明人： Hao Zhu , Alfred Rieder
CPC分类号： G01F1/8413 , G01F1/8422 , G01F1/8477 , G01F25/0007
摘要： A Coriolis mass flow measuring device 100 includes four bent measuring tubes 110a, 110b, 110, 110dd, two actuator arrangements 140a, 140c, and two sensor arrangements 142a-1, 142a-2, 142c-1, 142c-2, wherein all four measuring tubes (110a, 110b, 110c, 110d) are joined inlet end and outlet end with collectors (120), wherein the measuring tubes are connected inlet end and outlet end pairwise with node plates 132a, 132c, 134a, 134c to form oscillators, wherein the actuator arrangements 140a, 140c are adapted to excite bending oscillation wanted modes between the two measuring tubes of an oscillator, wherein the first oscillator and the second oscillator have bending oscillation wanted modes with first and second wanted mode eigenfrequencies (f11, f12), wherein the magnitude of the difference of the wanted mode eigenfrequencies of the two oscillators (|f11−f12|) amounts to at least 0.1 times, for example, at least 0.2 times and especially at least 0.4 times the lower of the two wanted mode eigenfrequencies, wherein the sensor arrangements are adapted to register oscillations of the oscillators.
-
公开(公告)号：US20170350742A1
公开(公告)日：2017-12-07
申请号：US15537904
申请日：2015-11-18
发明人： Hao Zhu , Alfred Rieder , Ennio Bitto
CPC分类号： G01F1/8477 , G01F1/8413 , G01N9/002
摘要： A Coriolis mass flow measuring device and/or density measuring device (100) includes two bent measuring tubes (110a, 110b), which extend mirror symmetrically to a first mirror plane between the measuring tubes, an actuator arrangement (140) and at least one sensor arrangement (142a, 142b); at the inlet end and at the outlet end, in each case, a collector (120a, 120a), with which the measuring tubes are joined, wherein the collectors (120a, 120b) each fulfill the functionality of a node plate; a support body (124), which connects the collectors (120a, 120b) rigidly with one another; and inlet end and outlet end, in each case, at least one plate-shaped coupler (132a, 132b, 134a, 134b), which connect the measuring tubes pairwise with one another, in order to form an oscillator, wherein the couplers have tube openings for measuring tubes, wherein the measuring tubes are connected at least sectionally with the couplers, wherein inlet end and outlet end, in each case, at least one coupler (132a, 132b, 134a, 134b) has, between the measuring tubes (110a, 110b), a tuning opening (146) for influencing the oscillation characteristics of the oscillator.
-
-
-
-
-
-
-
-
-
搜索结果
88 条记录 (耗时 0.032 秒)
