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公开(公告)号：US12111369B2
公开(公告)日：2024-10-08
申请号：US17756327
申请日：2020-11-09
发明人： Mohammad Sadegh Ebrahimi , Franco Ferraro , Romuald Girardey , Raphael Kuhnen , Izabella Sandor , Ralf Wacker
IPC分类号： G01R33/02 , G01F23/296 , G01K7/36 , G01N9/00 , G01N11/16
CPC分类号： G01R33/02 , G01F23/2966 , G01K7/36 , G01N9/002 , G01N11/16 , G01N2009/006
摘要： A method for monitoring the condition of a coil, wherein the coil is part of a device for determining at least one process variable of a medium in a container, includes applying an electrical excitation signal to the coil and receiving an electrical reception signal from the coil, determining a first value for the reception signal at a first predefinable measurement time, comparing the first value for the reception signal at the first measurement time with a reference value, and determining a condition indicator for the coil on the basis of the comparison. Disclosed also is a device that is designed for carrying out the disclosed method.
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公开(公告)号：US12104998B2
公开(公告)日：2024-10-01
申请号：US17702220
申请日：2022-03-23
CPC分类号： G01N11/00 , G01N11/16 , G01N2011/0086 , G01N2011/147
摘要： The present invention relates to devices for measuring property changes via in-situ micro-viscometry and methods of using same. The aforementioned device is inexpensive and can be used to quickly and accurately measure numerous physical and chemical property changes, including but not limited to the rate of chemical cure, change in tack, and rate of mass loss, for example, rate of moisture, solvent and/or plasticizer change.
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3.发明公开公开(公告)号：US20240255406A1
公开(公告)日：2024-08-01
申请号：US18159586
申请日：2023-01-25
发明人： Wei-Chih Wang , Fiona Marie Wang
CPC分类号： G01N11/16 , G02B6/132 , G01N2011/008
摘要： Provided is a method for measuring fluid's viscosity and mass flow, including the steps of immersing one end of an optical fiber into fluid, emitting a light beam by a light source, receiving the light beam by the optical fiber; and measuring the viscosity and the mass flow of the fluid in a sink based on a displacement of the one end of the optical fiber. The method further includes tapering the one end of the optical fiber and coating a surface of the one end of the optical fiber with a deposited gold thin film as a mirror. The light source is an unpolarized diode laser. Accordingly, the size of the measurement system setup is reduced by using ultra-small sensors. Moreover, the present disclosure also provides methods for fluid's viscosity and mass flow measurement by using intensity modulating sensors, elliptical core two-mode fiber-optic sensors and Fabry-Perot interferometer sensors.
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公开(公告)号：US12044659B2
公开(公告)日：2024-07-23
申请号：US17618329
申请日：2020-05-06
CPC分类号： G01N29/4436 , G01N29/14 , G01N29/326 , G01N9/24 , G01N11/16
摘要： A device and a method for determining and/or monitoring at least one process variable of a medium include a sensor unit having a mechanically oscillatable unit, at least a first piezoelectric element, a temperature detection unit for determining and/or monitoring a temperature of the medium and an electronics unit. The device is embodied to excite the mechanically oscillatable unit by means of an excitation signal such that mechanical oscillations are executed, to receive mechanical oscillations of the oscillatable unit and convert them into a first received signal, to transmit a transmitted signal and to receive a second received signal. The electronics unit is embodied, based on the first and/or second received signal, to determine the at least one process variable and, based on a third received signal received from the temperature detection unit, to determine the temperature of the medium.
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公开(公告)号：US12013275B2
公开(公告)日：2024-06-18
申请号：US17639020
申请日：2020-08-03
发明人： Alfred Rieder , Vivek Kumar , Mattia Alioli
摘要： A method for determining a viscosity of a medium based on damping of an oscillation mode of a measurement tube comprises exciting oscillations of an oscillation mode; detecting a sequence of provisional damping measurement values for the measurement tube oscillation mode; and calculating target measurement values. The influence of the cross-sensitivity of the damping for the flow rate of the medium is corrected by determining rectified damping measurement values that correspond to damping when the medium is at rest and determining viscosity on the basis of the rectified damping measurement values, or correcting the influence of the cross-sensitivity of the damping for the flow rate of the medium by determining provisional intermediate values of a damping-dependent variable, determining rectified intermediate values that correspond to the intermediate values when the medium is at rest, and determining the target measurement values on the basis of the rectified intermediate values.
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公开(公告)号：US11994420B2
公开(公告)日：2024-05-28
申请号：US17618590
申请日：2020-05-06
IPC分类号： G01F1/66 , G01F23/296 , G01N9/00 , G01N11/16
CPC分类号： G01F1/66 , G01F23/296 , G01N9/002 , G01N11/16
摘要： A device and a method for determining and/or monitoring at least one process variable of a medium include a sensor unit having a mechanically oscillatable unit, at least a first piezoelectric element, a pressure detection unit for determining and/or monitoring a pressure, and an electronics unit. The device is embodied to excite the mechanically oscillatable unit using an excitation signal such that mechanical oscillations are executed, to receive mechanical oscillations of the oscillatable unit, to convert them into a first received signal, to transmit a transmitted signal and to receive a second received signal. The electronics unit is embodied, based on the first and/or second received signal, to determine the at least one process variable of the medium.
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公开(公告)号：US11965808B2
公开(公告)日：2024-04-23
申请号：US17195208
申请日：2021-03-08
CPC分类号： G01N11/02 , G01N9/002 , G01N11/10 , G01N11/16 , G01N2011/008
摘要： A sensing device for measuring physical properties of fluid medium uses fiber based cantilevers embedded in a cartridge. The cartridge may include: at least one fluidic channel, at least one light channel, at least one chamber located at the intersection of the fluidic channel and the light channel, and at least one light guide placed in the light channel. The light guide is at least partially contained in the respective chamber. The light guide has a movable section. The vibration of the movable section may be externally actuatable.
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公开(公告)号：US11921022B2
公开(公告)日：2024-03-05
申请号：US17366700
申请日：2021-07-02
申请人： Anton Paar GmbH
CPC分类号： G01N11/14 , G01N11/162
摘要： A method for determining the density of an at least flowable, in particular liquid, specimen with a rheometer, in particular a rotational rheometer, includes providing the rheometer with a first measurement component for receiving the at least flowable, in particular liquid, specimen, and a second measurement component with a known volume to be immersed into the specimen. The first and second measurement components are movable relative to one another. The perpendicular force between the two measurement components is measured after the immersion of the second measurement component into the specimen. The measured perpendicular force corresponds to the buoyancy force acting between the specimen and the second measurement component. The density of the specimen is calculated based on Archimedes' principle by reference to the known volume of the second measurement component and the measured perpendicular force. A rheometer for carrying out the method is also provided.
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公开(公告)号：US20240019349A1
公开(公告)日：2024-01-18
申请号：US18199301
申请日：2023-05-18
发明人： Yui OKANO , Nobuaki OKUBO
IPC分类号： G01N11/16
CPC分类号： G01N11/16
摘要： In measuring dynamic viscoelasticity, a problem that a viscous fluid sample such as polymer melt index, thermosetting resin, adhesive, or paint cannot be measured for dynamic viscoelasticity can be solved. Disclosed is a sample container 1 used to measure dynamic viscoelasticity according to temperature changes occurring when heating or cooling a sample. The sample container 1 includes a lower-end-closed sample cup with an opening at an upper end, and an insertion jig 5 having a cross section smaller in area than the opening of the sample cup 2, being insertable into the sample cup 2 through the opening, and being capable of transferring vibration to a sample contained in the sample cup 2.
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公开(公告)号：US20230324273A1
公开(公告)日：2023-10-12
申请号：US18209961
申请日：2023-06-14
发明人： Qiong HE , Jinhua SHAO , Jin SUN , Houli DUAN , Qiang WANG
CPC分类号： G01N11/16 , A61B8/0858 , A61B8/485 , A61B8/5207 , G06T7/40 , G01N2203/0094
摘要： A method for quantifying viscoelasticity of a medium includes: obtaining a position-time graph of vibration propagation after the medium is subjected to a vibration excitation, determining an angle with maximum signal energy in the position-time graph by using angle projection, where the angle with the maximum signal energy corresponds to a slope of the position-time graph and the slope of the position-time graph is the propagation velocity of the vibration in the medium. Since the propagation velocity of the vibration in the medium is related to the viscoelasticity of the medium, a viscoelasticity parameter of the medium can be quantitatively calculated after the slope of the position-time graph is obtained. The method does not need to select a feature point from the position-time graph to calculate the slope of the position-time graph, and can efficiently and accurately quantifies viscoelasticity of the medium.
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