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公开(公告)号：EP0314467A3
公开(公告)日：1990-09-26
申请号：EP88310091.9
申请日：1988-10-27
发明人： Olivier, James P. , Kane, Mary F. , Orr, Clyde, Dr. Jr. , Laughinghouse, Charles L. , Wagner, Jack J. , Tidwell, Samuel Vince
CPC分类号： G01N23/10 , G01N15/02 , G01N15/04 , G01N35/1095
摘要： An x-ray sedimentation particle size analyzer in which data is taken only at particular positions along the sedimentation cell, and each such position is individually calibrated. Presentation of the data in the form of a particle size distribution curve can be accomplished very accurately using interpolation techniques. The sedimentation cell design is free of the effects of undesirable density gradients capable of detecting and removing bubbles, capable of attaining a highly uniform dispersion of sample prior to sedimentation, and including a safety interlock device for blocking x-ray projection when the cell is being accessed.
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2.发明公开A temperature controlling apparatus for use with pore volume and surface area analyzers and method for operating the same 失效装置和温度控制在分析仪使用的孔体积和多孔材料的表面面积的方法。
公开(公告)号：EP0239221A1
公开(公告)日：1987-09-30
申请号：EP87301313.0
申请日：1987-02-16
摘要： An apparatus 10 for maintaining a constant temperature within a vessel 12 immersed in a liquid 20 by surrounding a portion of the vessel 12, extending above the surface 22 of the liquid 20, with a wick 50. The wick 50 conducts liquid 20 up to a predetermined point on the vessel 12 and maintains the liquid 20 at that point, regardless of changes in the level of the liquid 20 due to evaporation. The wick 50 is encased within a layer of heat insulating or heat conducting material 60 to further aid in maintaining a constant temperature within the vessel 12. A second embodiment, including alternating layers of heat conducting 160 and heat insulating 180 material, is disclosed for increased temperature control. The disclosed apparatus 10 is particularly useful for maintaining a constant temperature within a vessel 12 attached to a scientific instrument, such as a pore volume and surface area analyzer.
摘要翻译： 浸渍在装置10用于通过围绕所述容器12的一部分保持在液体20的容器12内的恒定温度下，该液体20的表面22上方延伸，与芯50的芯50进行液体20达到一个 在液体20的水平由于蒸发预定点上的容器12和保持液体20在点那样，不管变化的。 燃烧芯50的热绝缘或热而在容器12内保持恒定温度的第二实施例，包括交替的热传导160和热层绝缘180材料导电材料60つweiterer辅助层内包裹，被光盘游离缺失增加 温度控制。 盘装置游离缺失10是用于附连到科学仪器的容器12中，试验作为孔体积和表面积分析仪内保持恒定的温度是特别有用的。
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公开(公告)号：EP3746767B1
公开(公告)日：2024-06-19
申请号：EP19743722.1
申请日：2019-01-28
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公开(公告)号：EP0755508A1
公开(公告)日：1997-01-29
申请号：EP95916401.0
申请日：1995-04-14
IPC分类号： G01N15
CPC分类号： G01N15/0211
摘要： An apparatus and method are disclosed for obtaining and analyzing light scattering data to determine the size distribution of a group of dispersed particles that scattered the light. The apparatus and method use a two-dimensional array of photosensitive pixels such as a charge-coupled device (CCD) or an array of solid-state photodiodes. The analyzer illuminates the particles with a dose of light in a collimated beam from a light source so as to scatter light of the beam, and at least a portion of the light interacting with the particles is detected with the photosensitive pixel array. The pixels are fuctionally equivalent and the analyzer dynamically configures and re-configures at least a portion of the pixels into a variable number of data collection areas which correspond to a selected set of scattering angles. The analyzer also determines whether and, from the pixel output data, where an unscattered center of the incident light beam intersects the pixel array. Thus, no precision mechanical alignment of the light source and the pixel array detector is required prior to operation of the analyzer. Furthermore, the ability of the analyzer to determine the unscattered beam center allows the analyzer to classify each of at least a portion of the pixels to data collection areas according to a function of the geometric relationship the pixel bears to the location of the beam center.
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公开(公告)号：EP0501811A1
公开(公告)日：1992-09-02
申请号：EP92301688.5
申请日：1992-02-28
IPC分类号： G01N15/08
CPC分类号： G01N15/0893
摘要： An apparatus and method are disclosed for obtaining adsorption data to be used for surface area and pore volume analysis. The apparatus and method utilize the differential pressures between a pair of dosing systems to indicate the amount of gas adsorbed by a sample. The system doses a sample chamber and a null chamber from essentially equal volumes of gas, and causes the chambers to be dosed such that any pressure difference between them, caused by adsorption, is eliminated. The resulting differential pressure between the essentially equal volumes of gas then indicates the amount of gas adsorbed by the sample. The system may be operated to dose in equilibrated increments or in a scanning mode in which adsorbate gas is continuously leaked into the sample chamber. A feedback circuit then controls dosing into the null chamber to eliminate the pressure difference caused by adsorption onto the sample surface. A differential pressure transducer connecting the volumes from which the gas is released then indicates the amount of gas adsorbed.
摘要翻译： 公开了用于获得用于表面积和孔体积分析的吸附数据的装置和方法。 该装置和方法利用一对给料系统之间的压差来指示样品吸附的气体量。 该系统从基本相同体积的气体中分配样品室和无效室，并且使得室被配量，使得它们之间由吸附引起的任何压力差被消除。 因此，基本相同体积的气体之间的所得差压表示样品吸附的气体量。 该系统可以以均衡的增量或扫描模式进行操作，其中吸附气体被连续地泄漏到样品室中。 然后，反馈电路控制向零空间的定量，以消除由吸附到样品表面上的压差。 连接释放气体的体积的差压传感器表示吸附气体的量。
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公开(公告)号：EP0856152A2
公开(公告)日：1998-08-05
申请号：EP96941941.0
申请日：1996-10-18
发明人： ORR, Clyde , CAMP, Ronnie, W.
CPC分类号： G01N9/00 , G01F17/00 , G01F22/02 , G01N1/286 , G01N9/02 , G01N2009/024 , G01N2033/0091
摘要： A compaction device for determining envelope and bulk densities of sample materials. The device uses a rotating sample cylinder and a plunger positioned within the cylinder. The force on the plunger is measured as the plunger advances in the cylinder. The position of the plunger at which a predetermined level of force is applied thereto is determined. Envelope density is determined from the difference in the advance of the plunger when the cylinder is partially filled with a dry flowing medium and when a sample material such as a rigid object is added into the medium. Bulk density is determined from the difference in the advance of the plunger when the cylidner is empty and when the cylinder contains a sample material such as a powder.
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公开(公告)号：EP0422747B1
公开(公告)日：1997-05-14
申请号：EP90203334.9
申请日：1988-10-27
发明人： Olivier, James P. , Kane, Mary F. , Orr, Clyde, Jr., Dr. , Laughinghouse, Charles L. , Wagner, Jack J. , Tidwell, Samuel Vince
CPC分类号： G01N23/10 , G01N15/02 , G01N15/04 , G01N35/1095
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公开(公告)号：EP0430944A1
公开(公告)日：1991-06-12
申请号：EP89903347.0
申请日：1989-02-16
发明人： ORR, Clyde, Jr. , CAMP, Ronnie
CPC分类号： G01N35/1083 , G01N15/02 , G01N15/04 , G01N23/10 , G01N2035/1006 , G01N2035/1086
摘要： Un système automatique d'amenée d'échantillons (10) permet de manipuler des échantillons en suspension et est particulièrement utile en liaison avec un analyseur granulométrique par sédimentation. Le système est capable de disperser un échantillon particulaire pour obtenir une suspension sans préparation préliminaire de l'échantillon, de maintenir un échantillon en suspension au moment de son amenée à un analyseur, de délivrer en continu une concentration acceptable d'un échantillon en suspension, ainsi que de nettoyer et de rincer ses constituants entre l'amenée des échantillons afin d'éviter la contamination. Dans le mode de réalisation décrit, des béchers sont disposés sur un plateau rotatif (12), et un ensemble (15) d'amenée et de préparation d'échantillons consistant en une sonde ultrasonique (80), un agitateur (75) et un tube plongeur (85) est amené en position au-dessus des béchers (14) dans une séquence préprogrammée, puis abaissé dans le bécher (14) pour la préparation et le prélèvement de l'échantillon. On rince les constituants en renvoyant, par l'intermédiaire du tube plongeur (85), du liquide clair sur l'agitateur rotatif (75) qui disperse ce liquide.
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公开(公告)号：EP0755508B1
公开(公告)日：2001-11-21
申请号：EP95916401.3
申请日：1995-04-14
IPC分类号： G01N15/02
CPC分类号： G01N15/0211
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公开(公告)号：EP0422747A3
公开(公告)日：1991-10-02
申请号：EP90203334.9
申请日：1988-10-27
发明人： Olivier, James P. , Kane, Mary F. , Orr, Clyde, Jr., Dr. , Laughinghouse, Charles L. , Wagner, Jack J. , Tidwell, Samuel Vince
CPC分类号： G01N23/10 , G01N15/02 , G01N15/04 , G01N35/1095
摘要： An x-ray sedimentation particle size analyzer in which data is taken only at particular positions along the sedimentation cell, and each such position is individually calibrated. Presentation of the data in the form of a particle size distribution curve can be accomplished very accurately using interpolation techniques. The sedimentation cell design is free of the effects of undesirable density gradients, capable of detecting and removing bubbles, capable of attaining a highly uniform dispersion of sample prior to sedimentation, and including a safety interlock device for blocking x-ray projection when the cell is being accessed.
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