Portable device for use in the measurement of a component content of a
material
    100.
    发明授权
    Portable device for use in the measurement of a component content of a material 失效
    用于测量材料的组分含量的便携式设备

    公开(公告)号:US5229726A

    公开(公告)日:1993-07-20

    申请号:US778195

    申请日:1992-01-03

    申请人: Michael Kent

    发明人: Michael Kent

    IPC分类号: G01N22/00 G01N22/04

    CPC分类号: G01N22/04

    摘要: A portable device for use in the measurement of the dielectric properties of materials such as fish includes: a microwave circuit comprising a microwave source (10) connected via an isolator (12) to a directional coupler (14), a first output (16) of which is connected to a reference detector (18) and a first pre-amplifier (28) and a second output (20) of which is connected via an attenuator (22) to a sensor (24), an output of which is connected to a signal detector (26) and a second pre-amplifier (30); and further including two amplifiers (32, 34) into which outputs of the first (28) and second (30) pre-amplifiers are connected and a logarithmic/ratio device (38) which provides an output proportional to the logarithm of the ratio of outputs from the two amplifiers (32, 34), wherein an output from the logarithmic/ratio device (38) is calibrated to provide the content of a particular constituent of the material under test.

    摘要翻译: PCT No.PCT / GB90 / 01013 Sec。 371日期:1992年1月3日 102(e)日期1992年1月3日PCT提交1990年7月2日PCT公布。 出版物WO91 / 0051200 日本1991年1月10日。用于测量诸如鱼的材料的介电性质的便携式装置包括:微波电路,包括经由隔离器(12)连接到定向耦合器(14)的微波源(10) ,其第一输出(16)连接到参考检测器(18)和第一预放大器(28),其第二输出端(20)经由衰减器(22)连接到传感器(24) ,其输出连接到信号检测器(26)和第二前置放大器(30); 并且还包括两个放大器(32,34),所述第一(28)和第二(30)前置放大器的输出端连接到所述两个放大器(32,34)中;以及对数/比率装置(38),其提供与所述比例的对数 来自两个放大器(32,34)的输出,其中来自对数/比率装置(38)的输出被校准以提供被测试材料的特定成分的内容。