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    • 1. 发明授权
    • VORRICHTUNG ZUR MESSUNG DER VISKOSITÄT VON FLUIDEN
    • 用于测量的粘度流体。
    • EP0527176B1
    • 1994-06-22
    • EP91908653.8
    • 1991-04-30
    • NOACK, GerhardBODE, BertoldGUNDRUM, Jürgen
    • BODE, BertoldGUNDRUM, Jürgen
    • G01N11/16
    • G01N11/162
    • A device is disclosed for measuring the viscosity of fluids by means of a measurement sensor (3) having a cylindrical piezoelectric base body (2) with four electrodes (5, 5?1, 6, 61¿) mutually separated by the same angular distance and arranged on the cylinder envelope in a direction parallel to the cylinder axis. The measurement sensor (3) is retained in a holding device (34) and is linked to an alternative voltage source, the voltage of which is supplied to the electrodes of the measurement sensor in order to generate torsional oscillations. An evaluating unit detects the electric reaction of the measurement sensor to the applied alternative voltage and deduces therefrom a characteristic value to determine the viscosity of the fluid that surrounds the measurement sensor. On each front face of the cylindrical base body (2) of the measurement sensor are arranged two mutually opposite electrodes interconnected by a metal film (7, 8) applied on the front face. A metallic holding element (9, 10) that projects axially outwards is embedded in each front face of the piezoelectric base body. An electrically conductive connection between the metallic holding element (9, 10) and the metal film (7, 8) is ensured by a layer that contains a metal and that is baked at a higher temperature in the connecting zone between the holding element and the metal film.
    • 2. 发明公开
    • VORRICHTUNG UND VERFAHREN ZUR MESSUNG DER VISKOSITÄT VON FLUIDEN
    • 用于测量的粘度流体。
    • EP0527176A1
    • 1993-02-17
    • EP91908653.0
    • 1991-04-30
    • NOACK, GerhardBODE, BertoldGUNDRUM, Jürgen
    • BODE, BertoldGUNDRUM, Jürgen
    • G01N11
    • G01N11/162
    • Un dispositif de mesure de la viscosité de fluides comprend un capteur de mesure (3) avec un corps piézoélectrique cylindrique de base (2), quatre électrodes (5, 51, 6, 61) séparées par un même écartement angulaire étant agencées sur l'enveloppe du cylindre, parallèlement à l'axe du cylindre. Le capteur de mesure (3) est retenu dans un dispositif de retenue (34) et est relié à une source de tension alternative, la tension étant transmise aux électrodes du capteur de mesure afin d'engendrer dans celui-ci des oscillations de torsion. Une unité d'évaluation détecte la réaction électrique du capteur de mesure à la tension alternative appliquée et en déduit une valeur caractéristique qui permet de déterminer la viscosité du fluide qui entoure le capteur de mesure. Sur chaque face frontale du corps de base cylindrique (2) du capteur de mesure, deux électrodes opposées sont mutuellement reliées par une pellicule métallique (7, 8) appliquée sur la face frontale. Un élément métallique de retenue (9, 10) qui fait axialement saillie vers l'extérieur est encastré dans chaque face frontale du corps de base piézoélectrique. Une liaison électroconductrice entre l'élément métallique de retenue (9, 10) et la pellicule métallique (7, 8) est assurée par une couche contenant un métal, cuite à une température élevée dans la zone de liaison entre l'élément de retenue et la pellicule métallique.
    • 3. 发明申请
    • PROCESS AND DEVICE FOR MEASURING THE VISCOSITY OF FLUIDS
    • 用于测量流体粘度的方法和装置
    • WO1991017421A2
    • 1991-11-14
    • PCT/EP1991000826
    • 1991-04-30
    • NOACK, GerhardBODE, BertoldGUNDRUM, Jürgen
    • NOACK, Gerhard
    • G01N11/16
    • G01N11/162
    • A device is disclosed for measuring the viscosity of fluids by means of a measurement sensor (3) having a cylindrical piezoelectric base body (2) with four electrodes (5, 5?1, 6, 61¿) mutually separated by the same angular distance and arranged on the cylinder envelope in a direction parallel to the cylinder axis. The measurement sensor (3) is retained in a holding device (34) and is linked to an alternative voltage source, the voltage of which is supplied to the electrodes of the measurement sensor in order to generate torsional oscillations. An evaluating unit detects the electric reaction of the measurement sensor to the applied alternative voltage and deduces therefrom a characteristic value to determine the viscosity of the fluid that surrounds the measurement sensor. On each front face of the cylindrical base body (2) of the measurement sensor are arranged two mutually opposite electrodes interconnected by a metal film (7, 8) applied on the front face. A metallic holding element (9, 10) that projects axially outwards is embedded in each front face of the piezoelectric base body. An electrically conductive connection between the metallic holding element (9, 10) and the metal film (7, 8) is ensured by a layer that contains a metal and that is baked at a higher temperature in the connecting zone between the holding element and the metal film.
    • 4. 发明申请
    • PROCESS AND DEVICE FOR MEASURING THE VISCOSITY OF FLUIDS
    • 用于测量流体粘度的方法和装置
    • WO9117421A3
    • 1991-12-12
    • PCT/EP9100826
    • 1991-04-30
    • NOACK GERHARDBODE BERTOLDGUNDRUM JUERGEN
    • BODE BERTOLDGUNDRUM JUERGEN
    • G01N11/16
    • G01N11/162
    • A device is disclosed for measuring the viscosity of fluids by means of a measurement sensor (3) having a cylindrical piezoelectric base body (2) with four electrodes (5, 5?1, 6, 61¿) mutually separated by the same angular distance and arranged on the cylinder envelope in a direction parallel to the cylinder axis. The measurement sensor (3) is retained in a holding device (34) and is linked to an alternative voltage source, the voltage of which is supplied to the electrodes of the measurement sensor in order to generate torsional oscillations. An evaluating unit detects the electric reaction of the measurement sensor to the applied alternative voltage and deduces therefrom a characteristic value to determine the viscosity of the fluid that surrounds the measurement sensor. On each front face of the cylindrical base body (2) of the measurement sensor are arranged two mutually opposite electrodes interconnected by a metal film (7, 8) applied on the front face. A metallic holding element (9, 10) that projects axially outwards is embedded in each front face of the piezoelectric base body. An electrically conductive connection between the metallic holding element (9, 10) and the metal film (7, 8) is ensured by a layer that contains a metal and that is baked at a higher temperature in the connecting zone between the holding element and the metal film.
    • 公开了一种用于通过具有圆柱形压电基体(2)的测量传感器(3)来测量流体粘度的装置,该圆柱形压电基体具有相互间隔相同角距离的四个电极(5,5',6,61¿ 并沿平行于汽缸轴线的方向布置在汽缸套上。 测量传感器(3)保持在保持装置(34)中并且连接到替代电压源,该替代电压源的电压被提供给测量传感器的电极以便产生扭转振荡。 评估单元检测测量传感器对施加的替代电压的电反应并从中推导出特征值以确定围绕测量传感器的流体的粘度。 在测量传感器的圆柱形基体(2)的每个正面上布置有两个彼此相对的电极,这两个电极由施加在正面上的金属膜(7,8)相互连接。 轴向向外突出的金属保持元件(9,10)嵌入在压电基体的每个前表面中。 金属保持元件(9,10)和金属膜(7,8)之间的导电连接通过含有金属并且在保持元件和金属膜(7,8)之间的连接区域中以较高温度被烘焙的层来确保 金属薄膜。