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公开(公告)号：EP0576421B1
公开(公告)日：1998-12-02
申请号：EP91907328.8
申请日：1991-03-19
CPC分类号： G01R33/31 , G01N24/085
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公开(公告)号：EP0576421A1
公开(公告)日：1994-01-05
申请号：EP91907328.0
申请日：1991-03-19
IPC分类号： G01R33
CPC分类号： G01R33/31 , G01N24/085
摘要： Un système pulsé à résonance magnétique nucléaire destiné à une utilisation industrielle comprend un système de passage de l'échantillon (P, LI, V1, V2), un dispositif de réglage du champ magnétique (120, 124) et un dispositif de réglage thermique (134-138 et 142-146). La résonance est établie par une bobine (100) excitée par un émetteur récepteur (104) et interagissant avec l'échantillon et le champ magnétique en résonance pour établir des formes de courbe (C) de décroissance d'induction libre reçues et numérisées qui sont automatiquement analysées et mises sous forme de composantes Gaussiennes et exponentielles --. Le système prévoit des moyens de calcul à haute vitesse simplifiés avec une séquence de tests répétitive et des commandes thermiques qui minimisent systématiquement les erreurs pour garantir une détermination fiable de quantités de noyaux cibles dans des échantillons successifs provenant d'un processus industriel et utilisant un appareil fonctionnant selon le principe de l'écho de Spin Hahn pour régler automatiquement l'analyse de l'une ou de plusieurs des composantes analysées.
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公开(公告)号：EP0576421A4
公开(公告)日：1994-03-23
申请号：EP91907328
申请日：1991-03-19
CPC分类号： G01R33/31 , G01N24/085
摘要： Pulsed NMR system for industrial purposes comprising sample throughput system (P, LI, V1, V2) magnetic field adjustment (120, 124) and thermal adjustment (134-138 and 142-146). The resonance is established by a coil (100), excited by a transceiver (104) and interacting with the sample and the magnetic field at resonance to establish received and digitized free induction decay curve forms (C) which are automatically analyzed into Gaussian and exponential components -- providing simplified high speed computation means with repetitive test sequence and thermal controls that systematically minimize errors to assure reliable determination of target nuclei quantities in successive samples from an industrial process and utilizing Hahn spin echo based equipment to automatically adjust the analysis of one or more of the analyzed components.
摘要翻译： 用于工业目的的脉冲NMR系统包括样品通过系统（P，L1，V1，V2）磁场调节（120,124）和热调节（134-138和142-146）。 谐振由线圈（100）建立，由收发器（104）激励并与样品和共振处的磁场相互作用以建立接收和数字化的自由感应衰减曲线形式（C），其自动分析为高斯和指数 组件 - 提供简化的高速计算方法，提供重复性测试序列和热控制，系统地将误差最小化，以确保可靠地确定工业过程连续样品中的目标核数量，并利用基于哈恩自旋回波的设备自动调整一个 更多的分析组件。
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公开(公告)号：EP0198920B1
公开(公告)日：1993-04-28
申请号：EP85905951.1
申请日：1985-10-07
IPC分类号： G01N27/60
CPC分类号： G01F1/64
摘要： Flow measuring apparatus comprising a probe (1) coupled via a coaxial cable (2) to control circuitry with a current to voltage convertor (10), absolute value circuit (12), auto zero switch and integration (11, 27) and voltage to current circuit (18) yielding an analog output, corresponding to flow at the probe.
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5.发明公开Method of and apparatus for measuring the liquid content of a mixed-phase fluid 失效Verfahren und Vorrichtung zum Messen desFlüssigkeitsgehaltseiner Fluid-Mischung。
公开(公告)号：EP0061544A1
公开(公告)日：1982-10-06
申请号：EP81301349.7
申请日：1981-03-27
IPC分类号： G01N27/22
CPC分类号： G01N27/221
摘要： In a method of and an apparatus for measuring a liquid content of a mixed phase fluid in a container, an oscillating voltage is applied to the fluid and a current with conductive and capacitive components derived, the conductive component being cancelled out. The capacitive component is phase shifted (34) into phase with the oscillating input voltage. A feedback loop (32, 23, ∑) attenuates the conductive component, avoiding amplifier saturation.
摘要翻译： 在用于测量容器中的混合相流体的液体含量的方法和装置中，振荡电压被施加到流体，导电和电容成分的电流被导出，导电部件被抵消。 电容分量与振荡输入电压相位相移（34）。 反馈回路（32,23，SIGMA）会衰减导电元件，避免放大器饱和。
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6.发明公开USING NEURAL NETWORK AND PARTIAL LEAST SQUARE REGRESSION TECHNIQUES IN OBTAINING MEASUREMENTS OF ONE OR MORE POLYMER PROPERTIES WITH AN ON-LINE NMR SYSTEM 失效技术神经网络和部分缺失方回归用于测量一种或多种聚合物的特性与ON-LINE NMR系统中使用
公开(公告)号：EP0875001A1
公开(公告)日：1998-11-04
申请号：EP96945104.0
申请日：1996-12-30
CPC分类号： G01N24/085 , G01N24/082 , G01R33/389 , G01R33/4625
摘要： An on-line nuclear magnetic resonance (NMR) system, and related methods, are useful for predicting one or more properties of interest of a polymer. In one embodiment, a neural network is used to develop a model which correlates process variables in addition to manipulated NMR output to predict a polymer property of interest. In another embodiment, a partial least square regression technique is used to develop a model of enhanced accuracy. Either the neural network technique or the partial least square regression technique may be used in conjunction with a described multi-model or best-model-selection scheme according to the invention. The polymer can be a plastic such as polyethylene, polypropylene, or polystyrene, or a rubber such as ethylene propylene rubber.
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公开(公告)号：EP0807260A1
公开(公告)日：1997-11-19
申请号：EP95942415.0
申请日：1995-11-09
IPC分类号： G01R33
CPC分类号： G01N24/085 , G01N24/082 , G01R33/389 , G01R33/4625
摘要： Pulser NMR system for industrial measurements comprising sample throughput system (P, LI, V1, V2) and user system controls (104) to establish digitized free induction decay curves (C), from which Abragam, Gaussian, and exponential components are determined using a Marquardt-Levenberg iteration technique, and using regression techniques to correlate the curve components to the target nuclei.
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公开(公告)号：EP0716750A1
公开(公告)日：1996-06-19
申请号：EP94925197.0
申请日：1994-08-05
发明人： DECHENE, Ronald, L., c/o Auburn Internat.Inc. , SMITH, Thomas, B., c/o Auburn Internat.Inc. , DAY, David, R., c/o Auburn International Inc. , TANZER, Christian, I., c/o Auburn Internat.Inc. , TACHE, Ronald, J., c/o Auburn Internat.Inc. , ROY, Ajoy, K., c/o Auburn Internat.Inc.
CPC分类号： G01N24/085 , G01R33/31 , G01R33/563
摘要： A pulsed nmr analysis system (figure 1a) for polymer materials (S2) extracted from industrial processes at a mobility enhancing temperature (figure 3) (at or above glass transition temperature for amorphous polymers, at the crystalline transition temperature for crystalline and semi-crystalline polymers). The sample is measured via nmr techniques and results correlated to viscosity and melt index or melt flow (which are related to average molecular weights). Substantial improvement of correlation of nmr derived constants and equations of a free induction decay curve with the foregoing polymer properties is obtained via (1) conducting the nmr process at a mobility enhancing temperature (normally elevated compared to the industrial process temperature of the industrial process) and (2) holding temperature substantially constant at such elevated temperature.
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9.发明公开APPARATUS TO OBTAIN FLOW RATES IN PLASTICS VIA FIXED FREQUENCY, PULSED NMR 失效一种用于确定流量IN ART开放式磁共振固定和脉冲频率。
公开(公告)号：EP0665957A1
公开(公告)日：1995-08-09
申请号：EP93924321.0
申请日：1993-10-14
发明人： DECHENE, Ronald, L. , SMITH, Thomas, B. , MARINO, Scott, A. , TACHE, Ronald, J. , ROY, Ajoy, K.
CPC分类号： G01R33/31 , G01N24/085
摘要： A pulsed NMR analysis system and process comprising an air curtain (137), sample throughput system (P, LI, V1, V2) and user system controls (104) to establish digitized free induction decay curves (C), from which components functions are determined using linear or non-linear regression techniques to correlate the curve components to the target nuclei and to flow rates in plastic (MI and FRR for polyethylene and MF for polypropylene).
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公开(公告)号：EP0665956A1
公开(公告)日：1995-08-09
申请号：EP93923355.0
申请日：1993-10-12
IPC分类号： G01R33
CPC分类号： G01R33/31 , G01N24/082 , G01N24/085 , G01R33/4625
摘要： A pulsed NMR analysis system and process comprising sample throughput system (P, LI, V1, V2) and user system controls (104) to establish digitized free induction decay curves (C), from which components functions are determined using non-linear regression techniques to correlate the curve components to the target nuclei.
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