Apparatus for monitoring a fluid medium
    1.
    发明公开
    Apparatus for monitoring a fluid medium 失效
    Vorrichtung zurFlüssigkeitsüberwachung。

    公开(公告)号:EP0564070A1

    公开(公告)日:1993-10-06

    申请号:EP93300591.0

    申请日:1993-01-27

    IPC分类号: G01N29/18 G01S1/02

    摘要: This invention relates to an an apparatus for monitoring a fluid medium comprising a piezoelectric element provided with a layer including an absorbent material or a catalyst material. The apparatus further includes means for generating a Surface Skimming Bulk Wave for propagation along said piezoelectric element, said layer being capable of confining said wave to said element and being capable of changing its acoustic properties in response to absorption thereby and retention therein by chemical linkage of one or more analytes from the fluid medium or in response to chemical and/or physical changes in the fluid medium and means for monitoring changes in the propagated acoustic Wave caused by changes in the acoustic properties of said layer.

    摘要翻译: 本发明涉及一种用于监测流体介质的装置,其包括设置有包括吸收材料或催化剂材料的层的压电元件。 该装置还包括用于产生用于沿着所述压电元件传播的表面平滑体波的装置,所述层能够将所述波限制在所述元件上,并且能够响应于其吸收而改变其声学特性,并通过化学键 来自流体介质的一种或多种分析物或响应于流体介质中的化学和/或物理变化以及用于监测由所述层的声学性质的变化引起的传播声波的变化的装置。