WO2013015211A1 - 粘度測定装置 - Google Patents
粘度測定装置 Download PDFInfo
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- WO2013015211A1 WO2013015211A1 PCT/JP2012/068426 JP2012068426W WO2013015211A1 WO 2013015211 A1 WO2013015211 A1 WO 2013015211A1 JP 2012068426 W JP2012068426 W JP 2012068426W WO 2013015211 A1 WO2013015211 A1 WO 2013015211A1
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- rotor
- magnet
- sample container
- magnetic field
- container
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
- G01N2011/147—Magnetic coupling
Definitions
- the present invention relates to a viscosity measuring apparatus that measures the viscosity of a substance using a rotor.
- Viscosity of substances is measured in quality control, performance evaluation, manufacturing process for pharmaceuticals, foods, paints, inks, cosmetics, chemicals, paper, adhesives, fibers, plastics, beer, detergents, concrete admixtures, silicon, etc. This is an indispensable measurement technology for raw material management, research and development, etc.
- a method for measuring the viscosity of such a substance there are a capillary method, a method of bringing a vibrator into contact, a method using a rotor, and the like.
- a conductive rotor (sphere) is submerged in a sample container filled with a sample solution, and a rotating magnetic field is applied to the rotor from the outside of the sample container.
- a current is generated in the rotor provided with the rotating magnetic field due to the rotating magnetic field, and the rotor rotates by the action of Lorentz force generated between the current and the rotating magnetic field applied to the rotor.
- the rotational speed of the rotor is delayed with respect to the rotational speed of the rotating magnetic field in accordance with the viscosity of the sample liquid. Viscosity can be calculated by using this rotational speed delay. That is, the relationship between the difference between the rotation speed of the rotor and the rotation speed of the rotating magnetic field and the rotation speed of the rotor is expressed by a linear expression, and the slope of the linear expression is the viscosity.
- Patent Document 1 is configured to apply a rotating magnetic field to the rotor through the side surface of the sample container. That is, the rotating magnetic field is generated by an electromagnet pair or a permanent magnet pair disposed in the rotating surface of the rotor.
- the rotating magnetic field is generated by an electromagnet pair or a permanent magnet pair disposed in the rotating surface of the rotor.
- a rotating magnetic field is generated by sequentially exciting different polarities at the facing positions.
- a rotating magnetic field is generated by rotating a pair of permanent magnets arranged with the rotor sandwiched between the opposing positions having different polarities in the plane.
- any configuration it is necessary to arrange a plurality of electromagnets or permanent magnets (hereinafter simply referred to as magnets) in the same plane.
- magnets electromagnets or permanent magnets
- the sample container is disposed between the opposed magnets, it is difficult to reduce the interval between the opposed magnets. Therefore, a relatively large area and volume are required as a viscosity measuring device.
- the sample container is disposed between the opposing magnets, the shape of the sample container that can be measured is limited.
- the present invention has been made in view of such problems of the prior art, and an object of the present invention is to provide a viscosity measuring apparatus that can be miniaturized and that has a relatively high degree of freedom in the shape of a sample container.
- the viscosity measuring apparatus includes a sample container, a conductive rotor, a magnet, a variable magnetic field driving unit, and a viscosity detecting unit.
- the sample container contains a sample solution.
- the conductive rotor is immersed in the sample liquid in the sample container.
- the magnet is arranged in a state facing the sample container at a position away from the rotation surface of the rotor by a predetermined distance in the direction of the rotation axis of the rotor.
- the magnet applies a magnetic field to the rotor from the outside of the sample container.
- the variable magnetic field driving unit applies a magnetic field that varies with time to the rotor by driving the magnet.
- a magnet can be comprised with a permanent magnet or an electromagnet.
- the fluctuating magnetic field can be generated by the movement of the permanent magnet.
- the fluctuating magnetic field can be generated by controlling the current applied to the electromagnet.
- a rotating magnetic field can be used as the fluctuating magnetic field that imparts rotational torque to the rotor.
- the magnet is arranged in a state facing the sample container at a position away from the rotation surface of the rotor by a predetermined distance in the rotation axis direction of the rotor without surrounding the sample container. That is, since the magnet is arranged on one side with respect to the sample container, the occupation area (footprint) and volume of the apparatus can be greatly reduced as compared with the conventional apparatus.
- this configuration it is also possible to obtain the viscosity of the sample liquid in the sample container having an arbitrary shape. For example, in a factory or the like, it is also possible to continuously obtain in-line the viscosity of a liquid material or liquid product flowing in a pipe installed on a production line.
- a viscosity measuring device having a temperature adjustment mechanism can be configured as a device that is smaller and can be adjusted in a short time compared to the conventional one.
- the magnet In the viscosity measuring apparatus, it is possible to employ a configuration in which the magnet generates magnetic lines of force parallel to the rotating surface on the rotating surface of the rotor.
- “parallel” includes not only the case of being completely parallel but also the case of being substantially parallel.
- the magnet a magnet having N and S poles composed of strip-like regions parallel to each other on a plane spaced a predetermined distance from the rotation surface of the rotor in the rotation axis direction of the rotor can be employed.
- the viscosity measuring apparatus may further include a storage container that stores the magnet.
- the wall surface of the storage container is disposed between the sample container and the magnet.
- the distance from the container surface to the sample container between the sample container and the magnet can be easily maintained at a predetermined distance.
- the sample container can be disposed in contact with the wall surface of the storage container between the sample container and the magnet.
- the sample container can be disposed close to the magnet by setting a small distance between the container wall surface between the sample container and the magnet and the magnet. That is, a magnetic field can be efficiently applied to the rotor.
- the storage container wall surface between a sample container and a magnet comprises the wall surface of the vertical direction in a storage container, arrangement
- positioning of a sample container will be very easy.
- the housing container wall surface between the sample container and the magnet may employ a configuration having a fitting portion that fits into the sample container. In this case, even if the bottom surface of the sample container is a curved surface, the sample container can be easily arranged at the specified position. Further, the storage container wall surface between the sample container and the magnet may be flat. In this case, it is possible to easily dispose a support member or the like that disposes the sample container at a specified position on the wall surface.
- the magnet for generating the variable magnetic field is arranged on one side with respect to the sample container, the occupation area and volume of the apparatus can be greatly reduced compared to the conventional apparatus. Can do. Moreover, since it is not necessary to arrange a magnet for generating a variable magnetic field in a state of surrounding the sample container, a sample container having an arbitrary shape can be used. Furthermore, an additional unit such as a temperature adjusting mechanism can be easily arranged only around the sample container.
- FIG. 1 is a schematic configuration diagram showing the overall configuration of a viscosity measuring apparatus according to an embodiment of the present invention.
- FIG. 2A and FIG. 2B are schematic configuration diagrams showing a modification of the viscosity measuring apparatus according to the embodiment of the present invention.
- FIG. 3 is a schematic configuration diagram illustrating a modified example of the viscosity measuring apparatus according to the embodiment of the present invention.
- FIG. 4 is a schematic configuration diagram illustrating a modified example of the viscosity measuring apparatus according to the embodiment of the present invention.
- FIG. 5 is a schematic configuration diagram showing a modified example of the viscosity measuring apparatus according to the embodiment of the present invention.
- FIG. 1 is a schematic configuration diagram showing the overall configuration of a viscosity measuring apparatus according to an embodiment of the present invention.
- FIG. 2A and FIG. 2B are schematic configuration diagrams showing a modification of the viscosity measuring apparatus according to the embodiment of the present invention.
- FIG. 3 is a schematic configuration diagram illustrating a
- FIG. 6 is a schematic configuration diagram illustrating a modified example of the viscosity measuring apparatus according to the embodiment of the present invention.
- FIG. 7A and FIG. 7B are schematic cross-sectional views showing a modification of the viscosity measuring device according to one embodiment of the present invention.
- the present invention is embodied as a viscosity measuring device that generates a rotating magnetic field using a permanent magnet.
- FIG. 1 is a schematic configuration diagram showing an example of a configuration of a viscosity measuring apparatus in the present embodiment.
- the viscosity measuring apparatus 100 includes a sample container 1, a rotor 2, magnets 3 (3 a and 3 b), a variable magnetic field drive unit 4, and a viscosity detection unit 9.
- the sample container 1 contains a sample liquid 8 to be measured for viscosity.
- the material of the sample container 1 is not particularly limited as long as a magnetic field is generated inside by the magnet 3.
- a test tube made of quartz glass having an open end arranged vertically upward is used as the sample container 1.
- the rotor 2 is made of a conductive material and is immersed in the sample liquid 8 in the sample container 1.
- the part which touches the sample container 1 has a convex curved surface.
- the rotor 2 is composed of an aluminum sphere having a radius smaller than the radius of curvature of the bottom of the test tube that is the sample container 1.
- the rotor 2 is disposed in the sample container 1 in a state where part or all of the rotor 2 is submerged in the sample liquid 8. In the example of FIG. 1, since the rotor 2 rotates around the vertical axis, the rotation surface of the rotor 2 is parallel to the upper surface of the sample liquid 8 accommodated in the sample container 1.
- the magnet 3 made of a permanent magnet is disposed below the sample container 1 so as to face the sample container 1 and applies a magnetic field to the rotor 2 from the outside of the sample container 1.
- the magnet 3 includes a magnet 3 a in which the south pole is disposed in a state facing the sample container 1 and a magnet 3 b in which the north pole is disposed in a state facing the sample container 1. Further, the surface of the magnet 3 a facing the sample container 1 (S pole) and the surface of the magnet 3 b facing the sample container 1 (N pole) are arranged in parallel with the rotating surface of the rotor 2.
- the magnet 3 a and the magnet 3 b have a band shape in plan view, and are fixed on a turntable 30 that is rotationally driven in a plane parallel to the rotation surface of the rotor 2.
- the sample container 1 is installed in a state in which the rotation axis of the turntable 30 and the center axis of the test tube that is the sample container 1 coincide with each other, and the rectangular parallelepiped magnet 3a and the magnet 3b are connected to the rotation axis. It is arranged symmetrically with respect to the containing surface.
- the magnet 3 a and the magnet 3 b By arranging the magnet 3 a and the magnet 3 b in this way, the magnet 3 generates magnetic lines of force parallel to the rotation surface on the rotation surface of the rotor 2.
- the magnet 3 a and the magnet 3 b are arranged in parallel with respect to the above-described plane whose longitudinal sides include the rotation axis of the turntable 30.
- the sample stage 6 for placing the sample container 1 in contact with the magnet 3 is provided so that the distance between the magnet 3 and the rotor 2 is always constant. And the sample container 1.
- a material that does not obstruct the application of the magnetic field to the rotor 2 by the magnet 3, such as a nonmagnetic material or a thin magnetic material can be used.
- the upper surface of the sample table 6 is parallel to the rotation surface of the rotor 2 and the rotation surface of the rotation table 30. In this configuration, the sample container 1 can be disposed close to the magnet 3 by setting the distance between the sample stage 6 and the magnet 3 small. That is, a magnetic field can be efficiently applied to the rotor 2.
- the variable magnetic field drive unit 4 drives the magnet 3 to apply a magnetic field that changes over time to the rotor 2.
- the variable magnetic field drive unit 4 is configured by a motor 4 having a rotation drive shaft 5 arranged coaxially with the rotation shaft of the turntable 30. Therefore, in this example, the variable magnetic field drive unit 4 applies a rotating magnetic field to the rotor 2 as a variable magnetic field by rotationally driving the magnet 3.
- An induced current is excited in the rotor 2 by the rotating magnetic field.
- a rotational torque is applied to the rotor 2 by Lorentz interaction between the induced current and the rotating magnetic field, and the rotor 2 rotates.
- the rotation axis of the rotor 2 and the rotation axis of the turntable 30 coincide with each other.
- the viscosity detector 9 obtains the viscosity of the sample liquid 8 based on the rotation state of the rotor 2 and the time fluctuation state of the fluctuation magnetic field.
- the rotation state of the rotor 2 is captured by a CCD (Charge Coupled Device) camera 7 disposed above the sample container 1.
- the image showing the rotation state of the rotor 2 acquired by the CCD camera 7 is processed by the image processing unit 11 and the rotation number of the rotor 2 is obtained.
- the image processing unit 11 obtains the number of rotations of the rotor 2 by detecting a mark added to the upper portion of the rotor 2.
- the time-varying state of the varying magnetic field can be acquired as the number of rotations of the rotating magnetic field.
- the rotation speed of the rotating magnetic field matches the rotation speed of the rotary drive shaft 5. Therefore, the rotational speed of the rotating magnetic field can be acquired by acquiring the rotational speed of the motor that is the variable magnetic field driving unit 4 and the rotational speed of the turntable 30.
- the rotational speed can be obtained by using image processing in the same manner as the rotational speed of the rotor 2.
- the rotational speed of the rotating magnetic field is controlled by the drive control unit 12 that controls the rotational speed of the variable magnetic field driving unit 4. It is configured to acquire the rotation speed.
- the viscosity detector 9 acquires the rotation speed of the rotor 2 and the rotation speed of the rotating magnetic field from the image processing section 11 and the drive control section 12, respectively, and based on the acquired rotation speed of the rotor 2 and rotation speed of the rotating magnetic field.
- the viscosity of the sample liquid 8 is calculated. Viscosity is calculated using a delay in the rotational speed of the rotor with respect to the rotational speed of the rotating magnetic field, generated according to the viscosity of the sample liquid, as in the prior art.
- the slope of the linear expression is used as the viscosity.
- the viscosity of the sample liquid 8 can be calculated as the product of the ratio of the slope and the slope of the linear equation obtained in advance for a sample liquid (standard sample) having a known viscosity and the viscosity of the standard sample.
- the calculation method of the said viscosity is the same as that of the past, detailed description here is abbreviate
- the viscosity detection unit 9, the image processing unit 11, and the drive control unit 12 are, for example, a dedicated arithmetic circuit or a processor and a memory such as a RAM (Random Access Memory) or a ROM (Read Only Memory). And hardware stored in the memory and software operating on the processor.
- the magnet 3 does not surround the periphery of the sample container 1 and is disposed on one side with respect to the sample container 1. Therefore, compared with the conventional apparatus, the occupation area (footprint) and volume of the apparatus can be significantly reduced. Further, in this configuration, since the magnet 3 is not disposed so as to surround the sample container 1, the viscosity of the sample liquid in the sample container having an arbitrary shape can be obtained. Furthermore, since no magnet is disposed in a state surrounding the periphery of the sample container, it is possible to dispose a temperature adjustment mechanism only around the sample container. That is, a viscosity measuring device having a temperature adjustment mechanism can be configured as a device that is smaller and can be adjusted in a short time compared to the conventional one.
- FIGS. 2A and 2B are schematic configuration diagrams showing an example of a configuration in which an electromagnet is employed as a magnet that applies a varying magnetic field to the rotor 2.
- FIG. 2A is a plan view
- FIG. 2B is a front view.
- the outer shapes of the sample container 1 and the rotor 2 are indicated by broken lines.
- electromagnet pairs 13 and 14 are arranged below the sample container 1 so as to face the sample container 1.
- the electromagnet pair 13 is composed of a pair of electromagnets 13a and 13b arranged to face each other with the rotation axis of the rotor 2 interposed therebetween.
- the electromagnet pair 14 is configured by a pair of electromagnets 14 a and 14 b disposed to face each other with the rotation axis of the rotor 2 interposed therebetween.
- the arrangement direction of the electromagnet pairs 13 and the arrangement direction of the electromagnet pairs 14 are orthogonal to each other in plan view.
- Each of the electromagnets 13 a, 13 b, 14 a, 14 b is wound with a coil so as to generate a magnetic field along the rotation axis of the rotor 2 (the central axis of the test tube that is the sample container 1), and faces the sample container 1.
- a single magnetic pole is generated on the surface (here, the upper surface) of each electromagnet 13a, 13b, 14a, 14b.
- a current is applied to a pair of electromagnets constituting each electromagnet pair at the same time, and when a current is applied, the magnetic fields having opposite polarities are generated.
- the surface of the other electromagnet 13b facing the sample container 1 is the S pole.
- variable magnetic field drive unit 4 is configured by a current source that controls the current applied to each electromagnet pair 13, 14, and the application timing of the current to each electromagnet pair 13, 14 is determined by the drive control unit 12. Be controlled.
- I 0 is a constant and t is time.
- a rotating magnetic field can be generated in the same manner as the configuration for rotating the turntable 30 described above.
- the rotational speed of the rotor 2 can be detected not only by the above method but also by any method.
- the rotation number of the rotor 2 is detected from above the sample container 1.
- the rotation number may be detected from below the sample container 1, that is, from the sample stage 6 side.
- 3 and 4 are schematic configuration diagrams showing an example of a configuration for detecting the rotation speed of the rotor 2 from the sample stage 6 side. 3 and 4, the configuration using the permanent magnet described in FIG. 1 is adopted as the mechanism for generating the rotating magnetic field. For this reason, the same reference numerals are given to components having the same functions and effects as those shown in FIG. 1, and detailed descriptions thereof are omitted.
- the rotational drive shaft 5 of the motor that is the variable magnetic field drive unit 4 is hollow, and an optical fiber 16 that functions as an optical waveguide is installed in the hollow portion.
- the tip of the optical fiber 16 is exposed on the surface of the turntable 30 in a state of facing the rotor 2 rotating in the sample container 1.
- the other end of the optical fiber 16 is connected to a rotation speed detection unit 15 installed on the opposite side of the turntable 30 with a motor serving as the variable magnetic field drive unit 4 interposed therebetween.
- the rotation speed detection unit 15 includes a light emitting unit that irradiates the rotor 2 with the laser light 17 through the optical fiber 16, and a laser beam reflected from the rotor 2 that rotates through the optical fiber 16.
- the rotational speed detection unit 15 detects the rotational speed by detecting a change in the reflection / interference pattern due to the rotation of the rotor 2 in the light receiving unit.
- at least portions of the sample stage 6 and the sample container 1 that exist on the path of the laser beam 17 are made of a translucent material.
- the optical waveguide 18 is installed on the sample table 6 on the side of the variable magnetic field driving unit 4.
- the optical waveguide 18 is disposed between the sample stage 6 and the magnet 3 in the horizontal direction from directly below the rotor 2 rotating in the sample container 1 to the outside of the turntable 30 in plan view.
- the outer end of the turntable 30 is connected to the above-described rotation speed detector 15.
- the laser light 17 irradiated from the light emitting unit of the rotation number detection unit 15 and propagated in the optical waveguide 18 in the horizontal direction is directed to the direction of the rotor 2 (vertical).
- the reflection surface reflects the laser beam 17 reflected by the rotating rotor 2 toward the light receiving unit of the rotation speed detection unit 15.
- the rotation number detection unit 15 detects the rotation number by detecting a change in the reflection / interference pattern caused by the rotation of the rotor 2 in the light receiving unit. Even in this configuration, at least portions of the sample stage 6 and the sample container 1 that are present on the path of the laser beam 17 are made of a translucent material.
- the magnet 3a and the magnet 3b can also be arrange
- the sample stage 6 constitutes part or all of the wall surface (here, the upper surface) of the storage container 20 facing the sample container 1.
- the example in which the surface of the sample table 6 in contact with the sample container 1 is a flat surface has been described. If the surface of the sample stage 6 that comes into contact with the sample container 1 is a flat surface, for example, when using a plurality of sample containers having different shapes, a support member or the like corresponding to each sample container is easily sampled on the surface. It can be placed on the table 6. As a result, even when a plurality of sample containers having different shapes are used, the rotor 2 in each sample container can be arranged at a predetermined specified position.
- FIGS. 7A and 7B are diagrams showing another example of the sample stage 6.
- FIG. 7A is a diagram showing a state where the sample container 1 is not installed
- FIG. 7B is a diagram showing a state where the sample container 1 is installed.
- the surface of the sample stage 6 that comes into contact with the sample container 1 includes a fitting portion 23 that fits into the sample container 1.
- the rotor 2 in the sample container 1 is set in advance. It can be easily arranged at a predetermined position.
- the magnet for generating the fluctuating magnetic field is arranged on the one surface side with respect to the sample container. Therefore, the occupied area and volume of the device can be greatly reduced as compared with the conventional device. Moreover, since it is not necessary to arrange a magnet for generating a variable magnetic field in a state of surrounding the sample container, a sample container having an arbitrary shape can be used. Furthermore, it is also possible to easily arrange various additional units including a temperature adjusting mechanism only around the sample container.
- the above-described embodiments do not limit the technical scope of the present invention, and various modifications and applications can be made within the scope of the present invention other than those already described.
- the configuration in which two magnetic poles exist at a position facing the sample container has been described.
- the arrangement of the magnet may be any as long as it can generate a variable magnetic field that applies rotational torque to the rotor.
- a configuration can be adopted.
- one magnetic pole may exist at a position facing the sample container.
- the sample container has a relatively high degree of freedom in shape and can be miniaturized, and is useful as a viscosity measuring device.
Abstract
Description
1 試料容器
2 回転子
3、13、14 磁石(磁石対)
3a、3b 永久磁石
13a、13b、14a、14b 電磁石
4 変動磁界駆動部
5 回転駆動軸
6 試料台
7 CCDカメラ
8 試料液
9 粘度検出部
15 回転検知部
20 収容容器
21 温調容器
22 配管
Claims (8)
- 試料液を収容する試料容器と、
前記試料容器内の試料液に浸された導電性の回転子と、
前記回転子の回転面から前記回転子の回転軸方向に所定距離離れた位置に前記試料容器と対向して配置され、前記試料容器の外部から前記回転子に対して磁界を付与する磁石と、
前記磁石を駆動して前記回転子に時間的に変動する磁界を付与し、前記回転子に誘導電流を励起するとともに、当該誘導電流と前記変動磁界とのローレンツ相互作用により前記回転子に回転トルクを与えて、前記回転面内において前記回転子を回転させる変動磁界駆動部と、
前記回転子の回転状態および前記変動磁界の時間変動状態に基づいて、前記試料液の粘性を求める粘度検出部と、
を備える、粘度測定装置。 - 前記磁石は、前記回転子の回転面において、当該回転面と平行な磁力線を生成する、請求項1記載の粘度測定装置。
- 前記磁石が、前記回転子の回転面から前記回転子の回転軸方向に所定距離離れた面において、互いに平行な帯状の領域からなるN極およびS極を有する、請求項1または2記載の粘度測定装置。
- 前記磁石を収容する収容容器をさらに備え、
前記試料容器と前記磁石との間に前記収容容器の壁面が配置される、請求項1から3のいずれか1項に記載の粘度測定装置。 - 前記試料容器が、前記試料容器と前記磁石との間の収容容器壁面に当接して配置される、請求項4記載の粘度測定装置。
- 前記試料容器と前記磁石との間の収容容器壁面が、前記収容容器における鉛直方向上向きの壁面を構成する、請求項4または5記載の粘度測定装置。
- 前記試料容器と前記磁石との間の収容容器壁面が、前記試料容器と嵌合する嵌合部を有する、請求項4から6のいずれか1項に記載の粘度測定装置。
- 前記試料容器と前記磁石との間の収容容器壁面が平面である、請求項4から6のいずれか1項に記載の粘度測定装置。
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DE112012003121.0T DE112012003121B4 (de) | 2011-07-27 | 2012-07-20 | Viskositätsmessvorrichtung |
US14/130,400 US9372141B2 (en) | 2011-07-27 | 2012-07-20 | Viscosity measuring apparatus |
JP2013525704A JP6128650B2 (ja) | 2011-07-27 | 2012-07-20 | 粘度測定装置 |
CN201280037481.2A CN103718017A (zh) | 2011-07-27 | 2012-07-20 | 粘度测定装置 |
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JP2011-163889 | 2011-07-27 | ||
JP2011163889 | 2011-07-27 |
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JP (1) | JP6128650B2 (ja) |
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WO2015012071A1 (ja) | 2013-07-23 | 2015-01-29 | 京都電子工業株式会社 | 回転速度検出装置、該装置を用いた粘度測定装置、回転速度検出方法及び該方法に用いる回転体 |
JP2015045621A (ja) * | 2013-08-29 | 2015-03-12 | 国立大学法人 東京大学 | 粘性・弾性測定装置及びその方法 |
JP2021032795A (ja) * | 2019-08-28 | 2021-03-01 | 国立大学法人 東京大学 | 粘性又は弾性の測定装置及び方法 |
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US9372141B2 (en) | 2016-06-21 |
DE112012003121B4 (de) | 2016-01-14 |
JPWO2013015211A1 (ja) | 2015-02-23 |
JP6128650B2 (ja) | 2017-05-17 |
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US20140165710A1 (en) | 2014-06-19 |
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