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    • 4. 发明授权
    • Method and apparatus for measuring an electrical parameter of a fluid
    • 用于测量流体的电参数的方法和装置
    • US06426629B1
    • 2002-07-30
    • US09101543
    • 1998-07-10
    • Raymond EdgsonEric Wilkinson
    • Raymond EdgsonEric Wilkinson
    • G01N2702
    • G01N27/07G01N27/06
    • Methods and apparatus for measuring electrical parameters of a test fluid are disclosed. The methods include maintaining the test fluid and a reference fluid at the same temperature and in thermal proximity to each other, equalizing the temperature of the test fluid and the reference fluid prior to the measuring step, measuring the electrical parameter of the test fluid and the reference fluid at substantially the same time, and standardizing the measurement to a predetermined temperature. The apparatus includes a heat exchanger for maintaining the flow of a primary heat exchange fluid in thermal proximity to the test fluid in the reference fluid, and a metal wall having one surface in contact with a measuring cell and another surface in contact with the flow of the primary heat exchange fluid whereby the measuring cell and the heat exchanger are separated thereby.
    • 公开了用于测量测试流体的电参数的方法和装置。 所述方法包括将测试流体和参考流体保持在相同的温度并彼此热接近,在测量步骤之前均衡测试流体和参考流体的温度,测量测试流体的电参数和 基本上相同的参考流体,并将测量标准化到预定温度。 该装置包括一个热交换器,用于保持一个热交换流体在参考流体中与测试流体接近的热量,以及金属壁,其一个表面与测量池相接触,另一个表面与 主要的热交换流体,由此测量单元和热交换器被分离。