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公开(公告)号：EP4189346A1
公开(公告)日：2023-06-07
申请号：EP21735247.5
申请日：2021-06-21
发明人： ALIOLI, Mattia , KUMAR, Vivek , RIEDER, Alfred , ECKERT, Gerhard
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公开(公告)号：EP3277998A1
公开(公告)日：2018-02-07
申请号：EP16712322.3
申请日：2016-03-24
发明人： KUMAR, Vivek
IPC分类号： F16L55/027 , F15D1/02 , G01F1/42
CPC分类号： F15D1/025 , F16L55/02718 , G01F1/6842
摘要： A flow conditioner comprising a perforated disk that has a central hole and four or more concentric circular paths which are arranged radially in relation to the central hole and on which holes are located, is characterized in that the majority of holes on a central circular path have a greater hole diameter than the majority of holes on the innermost circular path and the majority of holes on the outermost circular path.
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3.发明公开
公开(公告)号：EP2739944A1
公开(公告)日：2014-06-11
申请号：EP12742830.8
申请日：2012-07-17
发明人： RIEDER, Alfred , DRAHM, Wolfgang , ZHU, Hao , HUBER, Christof , KUMAR, Vivek , KIRST, Michael
CPC分类号： G01F25/0007 , G01B11/06 , G01B21/085 , G01F1/8436 , G01F1/8477 , G01K3/04 , G01N3/56 , G01N17/008
摘要： The invention relates to a method for detecting a deposit formation or an abrasion on a first measuring tube (A) of a flow meter (2) through which a medium flows. A first temperature time curve is detected by means of a first temperature sensor (30), which is arranged on the first measuring tube (A) in such a way that at least one measuring tube wall of the first measuring tube (A) is formed between the first temperature sensor (30) and the medium. At the same time, a second reference temperature time curve is detected by a second temperature sensor (38) that is at a distance from the first temperature sensor (30), which second temperature sensor is thermally coupled to the medium. From this, at least one variable that is characteristic for a heat exchange from the medium via the measuring tube wall to the first temperature sensor (30) is determined and a deposit formation or an abrasion on the first measuring tube (A) is detected, if the at least one measured characteristic variable or a variable derived therefrom differs by more than one threshold value from a pre-determined reference variable.
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公开(公告)号：EP2519805A2
公开(公告)日：2012-11-07
申请号：EP10795009.9
申请日：2010-12-22
发明人： KUMAR, Vivek , ANKLIN, Martin
CPC分类号： G01F1/8477 , G01F1/8413 , G01F1/8418 , G01F1/8427 , G01F1/8431 , G01F1/8436 , G01N11/02
摘要： The measuring system comprises a vibration-type transducer (MW) through which a medium flows when the transducer is operated and which produces primary signals that correspond to parameters of the flowing medium, especially a mass flow rate, a density and/or a viscosity, and a transducer electronic system (ME) electrically coupled to the transducer for controlling the transducer and for evaluating the primary signals supplied by the transducer. The transducer comprises at least one measuring tube (10; 10') for carrying a flowing medium, at least one electro-mechanical vibration stimulator for stimulating and/or maintaining vibrations of the at least one measuring tube, a first vibration sensor (51) for detecting inlet-side vibrations at least of the at least one measuring tube and for producing a first primary signal (S
1 ) of the transducer representing vibrations at least of the at least one measuring tube, and a second vibration sensor (52) for detecting outlet-side vibrations at least of the at least one measuring tube and for producing a second primary signal (S
2 ) of the transducer representing vibrations at least of the at least one measuring tube. The transducer electronics supplies at least one driver signal (i
exc ) for the vibration stimulator effecting vibrations of the at least one measuring tube and uses the first primary signal and the second primary signal as well as a Reynolds number measured value representing a Reynolds number,
Re , for medium flowing in the transducer to produce a pressure differential measured value (X
Δp ) which represents a pressure difference occurring in the flowing medium between two defined reference points.-
公开(公告)号：EP4022262A1
公开(公告)日：2022-07-06
申请号：EP20754190.5
申请日：2020-08-03
发明人： RIEDER, Alfred , KUMAR, Vivek , ALIOLI, Mattia
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公开(公告)号：EP2370793B1
公开(公告)日：2019-04-03
申请号：EP09774892.5
申请日：2009-12-11
发明人： KUMAR, Vivek , WIEST, Achim
IPC分类号： G01F1/66
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公开(公告)号：EP3325923A1
公开(公告)日：2018-05-30
申请号：EP16730433.6
申请日：2016-06-22
发明人： KUMAR, Vivek , HOLLMACH, Marc
摘要： The invention relates to a flowmeter (1) based on the vortex flow measurement principle, comprising: a measuring tube (2); a bluff body (4) in the measuring tube (2) for generating a Karman vortex sheet with a flow-dependent vortex frequency; a first pressure fluctuation measuring arrangement (12, 14) for detecting and signaling vortex-related pressure fluctuations and for providing pressure fluctuation-dependent signals; a second pressure fluctuation measuring arrangement (16, 18) for detecting and signaling vortex-related pressure fluctuations and for providing pressure fluctuation-dependent signals, wherein the first pressure fluctuation measuring arrangement (12, 14) is arranged at a distance from the second pressure fluctuation measuring arrangement (16, 18) in the longitudinal direction of the measuring tube; and an analyzing unit (20) for determining a vortex frequency and a flow measurement value based on the vortex frequency. The analyzing unit (20) is additionally designed to determine the current Reynolds number and/or the kinematic viscosity of the medium flowing in the measuring tube using the ratio of the amplitudes of the signals of the first pressure fluctuation measuring arrangement (12, 14) and the second pressure fluctuation measuring arrangement (16, 18) or variables derived therefrom.
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公开(公告)号：EP3080560A1
公开(公告)日：2016-10-19
申请号：EP14793095.2
申请日：2014-11-03
CPC分类号： G01F1/8472 , G01F1/8468 , G01N9/002 , G01N11/02 , G01N11/16 , G01N2009/006
摘要： The invention relates to a density measuring device which is used to measure a density, ρ, of a flowable medium and comprises measuring-device electronics (ME) and a measuring transducer (MW) electrically connected to the measuring-device electronics. The measuring transducer comprises a measuring tube (10), a vibration exciter (41) for exciting and maintaining vibrations, and a vibration sensor (51) for sensing vibrations of the at least one measuring tube. The measuring device electronics are designed to adjust, by means of a vibration measurement signal (s
1 ) and an exciter signal (e
1 ), a driving force that causes useful vibrations, namely vibrations having a specified useful frequency, f
N , of the measuring tube, in such a way that a phase shift angle, φ
Ν , by which a velocity response, V
N , of the measuring tube is phase-shifted with respect to a useful force component, F
N , of the driving force is less than -20° and greater than -80° during a specified phase control interval, and/or the useful frequency has a frequency value that is more than 1.00001-times but less than 1.001-times a frequency value of an instantaneous resonance frequency of the measuring tube. Furthermore, the measuring device electronics are designed both to determine at least one frequency measured value, X
f , representing the useful frequency for said phase control interval on the basis of the vibration measurement signal (s
1 ) present during the phase control interval and to generate a density measured value, X
ρ , representing the density, ρ, by using the frequency measured value, X
f .-
10.发明公开MESSWANDLER VOM VIBRATIONSTYP SOWIE MESSGERÄT MIT EINEM SOLCHEN MESSWANDLER 审中-公开MESSWANDLER从振动式和测量设备与此类MESSWANDLER
公开(公告)号：EP2457067A1
公开(公告)日：2012-05-30
申请号：EP10726082.0
申请日：2010-06-22
IPC分类号： G01F1/84
CPC分类号： G01F1/8477 , G01F1/8409 , G01F1/8431
摘要： The invention relates to a transducer, in particular also for the use in a Coriolis mass-flow measuring device, comprising at least one measuring tube (10), which is at least temporarily vibrating during operation, for guiding flowing medium, and a sensor array (50) serving to detect vibrations of the measuring tube (10). The measuring tube extends between a first measuring tube end on the inlet side and a second measuring tube end on the outlet side, having a vibration length (L
10 ) and performing vibrations about a pivoting axis that is parallel or coincident to an virtual connecting axis which imaginarily connects the two ends of the measuring tube, for example in a bending vibration mode. The sensor array generates a first primary transducer signal representing vibrations of the measuring tube (10) by means of a first vibration sensor (51) disposed on the measuring tube (10), and generates a second primary transducer signal representing vibrations of the measuring tube (10) by means of a second vibration sensor (52) disposed on the measuring tube (10) at a distance from the first vibration sensor (51), wherein the length of an area extending between the first and second vibration sensor of the first measuring tube (10) defines a measuring length (L
50 ) of the transducer. In a transducer according to the invention, the vibration sensors of the sensor array are placed in the transducer in such a way that a sensitivity (S
IST ) of the transducer, with respect to a theoretical sensitivity at a measuring length (L
10 = L
50 ) that maximally corresponds to the vibration length, as well as a signal amplitude (A
IST ) of the primary signals, effectively obtained during operation and with respect to a theoretically maximal possible signal amplitude (A
MAX ) at the location of a maximal vibration amplitude, meet the condition (I).
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