公开(公告)号：US20080257036A1

公开(公告)日：2008-10-23

申请号：US12097901

申请日：2006-12-27

Applicant: Francois Chaudoreille ,  Alfred Permuy ,  Eric Donzier

Inventor： Francois Chaudoreille ,  Alfred Permuy ,  Eric Donzier

IPC: G01N9/34

CPC classification number: G01N9/002 ,  G01N11/16

Abstract: A density and viscosity sensor 1 for measuring density and viscosity of fluid F, the sensor 1 comprising: a resonating element 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G arranged to be immersed in the fluid F, an actuating/detecting element 4, 4A, 4B coupled to the resonating element, a connector 7 for coupling to the actuating/detecting element 4, 4A, 4B, a housing 2 defining a chamber 8A isolated from the fluid F, the housing 2 comprising an area of reduced thickness defining a membrane 9 separating the chamber 8A from the fluid F, the membrane 9 having a thickness enabling transfer of mechanical vibration between the actuating/detecting element 4, 4A, 4B and the resonating element 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G, the actuating/detecting element 4, 4A, 4B is positioned within the chamber so as to be isolated from the fluid F and mechanically coupled to the membrane 9, the resonating element 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G arranged to be immersed in the fluid F is mechanically coupled to the membrane 9, wherein the resonating element 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G has a shape defining a first resonance mode and a second resonance mode characterized by different resonant frequencies F1, F2 and different quality factors Q1, Q2, the first resonance mode moving a volume of fluid, the second mode shearing a surrounding fluid.

Abstract translation: 用于测量流体F的密度和粘度的密度和粘度传感器1，传感器1包括：谐振元件3,3A，3B，3C，3D，3E，3F，3G，被布置成浸入 流体F，耦合到谐振元件的致动/检测元件4,4A，4B，用于联接到致动/检测元件4,4A，4B的连接器7，限定腔室8A的壳体2隔离 来自流体F的壳体2包括减小厚度的区域，其限定了将腔室8A与流体F分隔开的膜9，膜9具有能够在致动/检测元件4,4A之间传递机械振动的厚度， 4 B和谐振元件3,3A，3B，3C，3D，3E，3F，3G，致动/检测元件4,4A，4B位于室内，以便 从流体F隔离并机械耦合到膜9，布置成浸没在流体F中的谐振元件3,3A，3B，3C，3D，3E，3F，3G是机械 耦合到膜9，其中谐振元件3,3A，3B，3C，3D，3E，3F，3G具有限定第一共振模式的形状和以不同谐振为特征的第二谐振模式 频率F 1，F 2和不同的质量因子Q 1，Q 2，第一共振模式移动a 流体体积，第二模式剪切周围液体。

公开(公告)号：US07874199B2

公开(公告)日：2011-01-25

申请号：US12097901

申请日：2006-12-27

Applicant: Francois Chaudoreille ,  Alfred Permuy ,  Eric Donzier

Inventor： Francois Chaudoreille ,  Alfred Permuy ,  Eric Donzier

IPC: G01N9/10 ,  G01N11/16

CPC classification number: G01N9/002 ,  G01N11/16

Abstract: A density and viscosity sensor for measuring density and viscosity of a fluid, and method for measuring, are presented herein. The sensor comprises a resonating element, and actuating/detecting element, a connector and a housing. The actuating/detecting element is positioned within a chamber defined by the housing so as to be isolated from the fluid. The resonating element is arranged to be immersed in the fluid, and has a shape defining a first resonance mode and a second resonance mode characterized by different resonance frequencies and different quality factors. The first resonance mode is adapted to move a volume of fluid, and the second resonance mode is adapted to shear a surrounding fluid.

Abstract translation: 本文给出了用于测量流体密度和粘度的密度和粘度传感器及其测量方法。 传感器包括谐振元件，致动/检测元件，连接器和壳体。 致动/检测元件位于由壳体限定的室内，以便与流体隔离。 谐振元件布置成浸没在流体中，并且具有限定第一共振模式的形状和以不同共振频率和不同质量因子为特征的第二共振模式。 第一谐振模式适于移动一定体积的流体，并且第二共振模式适于剪切周围流体。