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    • 12. 发明专利
    • Viscometer
    • 粘度计
    • JP2008170448A
    • 2008-07-24
    • JP2008023640
    • 2008-02-04
    • Endress & Hauser Frohtec Agエンドレス ウント ハウザー フローテック アクチエンゲゼルシャフトEndress + Hauser Flowtec AG
    • DRAHM WOLFGANGRIEDER ALFRED
    • G01N11/14G01N11/16G01N1/00
    • G01F1/849G01F1/8413G01F1/8418G01F1/8422G01F1/8431G01N11/167
    • PROBLEM TO BE SOLVED: To provide a viscometer for expressing the viscosity of a fluid, inside pipe.
      SOLUTION: This viscometer is provided with a vibrating transducer having at least one flow tube 13 communicated with the pipe to guide the fluid, The flow tube is vibrated and driven by an excitation part 16 to generate a friction force in the fluid. The viscometer further includes a meter electronic circuit 50 for feeding an excitating current to the excitating part. The first internal intermediate value for expressing the friction force, acting in the fluid is formed by the meter electronic circuit, corresponding to the excitation current. In the present invention, the second internal intermediate value expressing a uniform substance in the fluid is generated in the meter electronic circuit, and the meter electronic circuit determines the viscosity value by using the two intermediate values. The first internal intermediate value is preferably normalized, by an amplitude control signal for the excitation current corresponding with the vibration of the flow tube. As a result, the viscosity value of the viscometer is very accurate and robust, in particular, irrespective of an installation position of the flow tube.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供用于在管内表达流体粘度的粘度计。 解决方案:该粘度计设置有具有至少一个流管13的振动换能器,该流动管13与管道连通以引导流体。流管由激励部分16振动并驱动以在流体中产生摩擦力。 粘度计还包括用于将兴奋电流馈送到兴奋部的仪表电子电路50。 用于表达作用在流体中的摩擦力的第一内部中间值由对应于激励电流的仪表电子电路形成。 在本发明中,在仪表电子电路中产生在流体中表现均匀物质的第二内部中间值,仪表电子电路通过使用两个中间值来确定粘度值。 第一内部中间值优选地通过与流管的振动相对应的激励电流的幅度控制信号来归一化。 结果,粘度计的粘度值非常精确和鲁棒,特别是与流管的安装位置无关。 版权所有(C)2008,JPO&INPIT