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    • 1. 发明授权
    • Apparatus for measuring magnetic susceptibility
    • 磁化率测量装置
    • US3879658A
    • 1975-04-22
    • US40033273
    • 1973-09-24
    • HUMMEL HEINZ
    • HUMMEL HEINZ
    • G01N27/74G01R33/16G01R33/12
    • G01R33/16G01N27/74
    • Two magnetic circuits are provided with two gaps penetrated normally by similar magnetic fields and having similar zones of inhomogeneities as effective on two test bodies which are interconnected rigidly but in a manner permitting deflection, rotational or linear. The gaps are surrounded by gas, and one of the test bodies forms a combined system with an additional material as far as paramagnetically or diamagnetically produced deflective forces for that body is concerned. The gas may be a reference gas with the additional material being a liquid sample, or the gas may be a test gas to be investigated while the additional material is a reference gas, encapsuled in that one body; the other body is either hollow with access for the test gas to its interior or solid, but smaller. The interconnected bodies experience different deflections in the two gaps resulting in a deflection which is monitored and converted into an amplified control current which, in turn, is fed back to unbalance the magnetic fields in the gaps for returning the bodies to the equilibrium position. The current needed for unbalancing the fields is an indication of magnetic susceptibility of the sample.
    • 两个磁路具有两个通过类似磁场通常穿过的间隙,并具有类似的不均匀区域,这两个区域在刚性互连但允许偏转,旋转或线性的两个测试体上有效。 这些间隙被气体包围,其中一个试验机构形成了一种与附加材料相结合的系统,直到涉及到该机构的参数或反电位产生的偏转力。 气体可以是附加材料是液体样品的参考气体,或者气体可以是待研究的测试气体,而附加材料是参考气体,封装在该单体中; 另一个体是中空的,可以将测试气体进入其内部或固体,但较小。 互连体在两个间隙中经历不同的偏转,导致偏转,该偏转被监测并转换成放大的控制电流,该放大的控制电流又被反馈以使间隙中的磁场不平衡,以将体返回到平衡位置。 不平衡场所需要的电流是样品的磁化率的指示。