Coriolis mass flow/density sensor with a single straight measuring tube
    1.
    发明授权
    Coriolis mass flow/density sensor with a single straight measuring tube 失效
    科里奥利质量流量/密度传感器,带一根直的测量管

    公开(公告)号:US6006609A

    公开(公告)日:1999-12-28

    申请号:US940644

    申请日:1997-09-30

    IPC分类号: G01F1/84 G01N9/00 G01N11/16

    摘要: This mass flow/density sensor (10), which can be installed in a pipe and through which a fluid to be measured flows during operation, is to be balanced over a wide density range, so that accurate measurements are possible. A single straight measuring tube (13) having a longitudinal axis (131) extends between its inlet end (11) and the outlet end (12) and is fixed to a support, e.g., a cylindrical tube (14, 14'). The support has a longitudinal centroidal line (141) which is parallel to, but does not coincide with, the longitudinal axis (131) of the measuring tube. A cantilever (15) is fixed to the measuring tube (13) midway between the inlet and outlet ends (11, 12) and in operation causes the measuring tube to vibrate either in a first fundamental flexural mode or in a second fundamental flexural mode having a higher frequency than this first mode. An excitation arrangement (16) disposed midway between the end pieces excites the measuring tube (13) in the second mode. Sensors (17, 18) for the motions of the measuring tube on the inlet and outlet side are positioned between the middle of the tube and the inlet and outlet ends, respectively. The support may be provided with a counterbalance. Because of the torsional vibrations exerted by the cantilever on the measuring tube, the sensor is also well suited for measuring the viscosity of the fluid.

    摘要翻译: 这种质量流量/密度传感器(10)可以在宽的密度范围内平衡,可以安装在管道中,待测量的流体在运行过程中流动,从而可以进行精确的测量。 具有纵向轴线(131)的单个直的测量管(13)在其入口端(11)和出口端(12)之间延伸并且被固定到诸如圆柱形管(14,14')的支撑件上。 支撑件具有与测量管的纵向轴线(131)平行但不一致的纵向重心线(141)。 悬臂(15)在入口端和出口端(11,12)之间的中途固定到测量管(13),并且在操作中使测量管以第一基本弯曲模式或第二基本弯曲模式振动, 比第一模式高的频率。 设置在端片之间的中间的激励装置(16)在第二模式下激发测量管(13)。 用于入口和出口侧的测量管的运动的传感器(17,18)分别位于管的中间和入口端和出口端之间。 支撑件可以设置有平衡。 由于悬臂在测量管上施加的扭转振动,传感器也非常适合测量流体的粘度。

    Coriolis mass flow/density sensor
    2.
    发明授权
    Coriolis mass flow/density sensor 有权
    科里奥利质量流量/密度传感器

    公开(公告)号:US06401548B1

    公开(公告)日:2002-06-11

    申请号:US09414268

    申请日:1999-10-07

    IPC分类号: G01F184

    摘要: A Coriolis mass flow/density sensor which can be installed in a pipe and through which a fluid to be measured flows during operation is balanced over a wide density range so that accurate measurements are possible. The Coriolis mass flow/density sensor includes a measuring tube, an excitation arrangement for exciting the measuring tube to vibrate in a second fundamental flexural mode of vibration; and a counterbalance member attached to the measuring tube which counterbalances the vibration of the measuring tube. A cantilever can be attached to the measuring tube midway between the inlet end and the outlet end of the measuring tube. First and second sensors sense the measuring tube vibration on the inlet and outlet sides of the measuring tube, respectively.

    摘要翻译: 科里奥利质量流量/密度传感器可以安装在管道中,待测量的流体在运行期间流动,在宽的密度范围内平衡,从而可以进行精确的测量。 科里奥利质量流量/密度传感器包括测量管,激励装置,用于激励测量管以第二基本弯曲振动模式振动; 以及附接到测量管的平衡构件,其抵消测量管的振动。 悬臂可以在测量管的入口端和出口端之间的中间连接到测量管。 第一和第二传感器分别感测测量管的入口侧和出口侧的测量管振动。

    Magneto-Inductive Flow Measuring Device
    4.
    发明申请
    Magneto-Inductive Flow Measuring Device 有权
    磁感应流量测量装置

    公开(公告)号:US20090301218A1

    公开(公告)日:2009-12-10

    申请号:US12227486

    申请日:2007-05-16

    IPC分类号: G01F1/58

    CPC分类号: G01F1/584 G01F1/60

    摘要: The invention relates to an apparatus for measuring volume- or mass-flow of a medium (11) flowing through a measuring tube (2) in the direction of the measuring tube axis (3), and includes: A magnet system (6, 7; 17), which produces a magnetic field (B) passing through the measuring tube (2) essentially transversely to the measuring tube axis (3); at least one measuring electrode (4; 5), which contacts the medium (11) in a defined surface region; and a control/evaluation unit (8), which provides information concerning volume- or mass flow of the medium (11) in the measuring tube (2) on the basis of a measurement voltage induced in the at least one measuring electrode (4, 5); wherein at least the medium-contacting surface region of the at least one measuring electrode (4, 5) is manufactured of a chemically inert and electrochemically and mechanically resistant material.

    摘要翻译: 本发明涉及一种用于测量沿测量管轴线(3)的方向流过测量管(2)的介质(11)的体积或质量流量的装置,并且包括:磁体系统(6,7) ; 17),其基本上横向于测量管轴线(3)产生穿过测量管(2)的磁场(B); 至少一个测量电极(4; 5),其在限定的表面区域中接触介质(11); 以及控制/评估单元(8),其基于在所述至少一个测量电极(4)中感应的测量电压来提供关于所述测量管(2)中的所述介质(11)的体积或质量流量的信息, 5); 其中所述至少一个测量电极(4,5)的至少所述介质接触表面区域由化学惰性和电化学和机械抵抗材料制成。

    Magneto-inductive flow measuring device
    5.
    发明授权
    Magneto-inductive flow measuring device 有权
    磁感应流量测量装置

    公开(公告)号:US08042410B2

    公开(公告)日:2011-10-25

    申请号:US12227486

    申请日:2007-05-16

    IPC分类号: G01F1/58

    CPC分类号: G01F1/584 G01F1/60

    摘要: An apparatus for measuring volume- or mass-flow of a medium flowing through a measuring tube in the direction of the measuring tube axis, and includes: a magnet system, which produces a magnetic field passing through the measuring tube essentially transversely to the measuring tube axis; at least one measuring electrode, which contacts the medium in a defined surface region; and a control/evaluation unit, which provides information concerning volume- or mass flow of the medium in the measuring tube on the basis of a measurement voltage induced in the at least one measuring electrode. At least the medium-contacting surface region of the at least one measuring electrode is manufactured of a chemically inert and electrochemically and mechanically resistant material.

    摘要翻译: 一种用于测量在测量管轴线方向上流过测量管的介质的体积或质量流量的装置,包括:磁体系统,其产生穿过测量管的磁场,基本上横向于测量管 轴; 至少一个测量电极,其在限定的表面区域中接触介质; 以及控制/评估单元,其基于在所述至少一个测量电极中感应的测量电压提供关于所述测量管中的介质的体积或质量流量的信息。 至少一个测量电极的介质接触表面区域至少由化学惰性和电化学和机械抵抗材料制成。