数字多用表比率测量功能在标准电阻器校准中的应用
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中国电子科技集团公司第十三研究所石家庄050051

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TB971

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Application of the ratio method function in calibrating the DC resistance
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The 13th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050051,China

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    摘要:

    为克服传统复杂测量标准电阻器方法的不足,保证快速、准确地对标准电阻器进行校准,提出了一种基于数字多用表8508A真欧姆比率测量功能测量标准电阻的方法,采用直接四线比率测量功能与真欧姆比率测量功能两种方法对标准电阻器进行校准。校准结果表明,采用真欧姆比率测量能够更好地消除热电势、电路失调的影响,且相对于传统复杂的测量方法,更快捷、方便,在试验的基础上对校准值进行了测量不确定度的分析与评定,更加验证了本校准方法的准确性和可靠性。

    Abstract:

    In order to overcome the shortcoming of complex and traditional methods in measuring standard resistor, and to calibrate the standard resistor fast and accurately, this article has proposed a new method of measuring the standard resistor based on the digital multimeter—8508A’s function of true Ohm ratio method. In this article, both the direct fourwire ratio measuring method and true ohm ratio measuring method were adopted to calibrate the standard resistor, and we find that true Ohm ratio method can eliminate the influence of thermoelectric power and circuit disorders better. Compared with the traditional and complex measuring method, this method is more convenient and efficient. Finally, the measuring uncertainty of calibration values has been also analyzed and assessed in order to verify the accuracy and reliability of this calibration method.

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刘霞美,乔玉娥,翟玉卫,吴爱华,梁法国.数字多用表比率测量功能在标准电阻器校准中的应用[J].电子测量技术,2016,39(6):24-27

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  • 在线发布日期: 2016-07-21
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