| 磁电系电表内阻的温度误差及其补偿 |
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| 引用本文： | 张臣发,乔绪.磁电系电表内阻的温度误差及其补偿[J].河北北方学院学报(自然科学版),2003(3). |
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| 作者姓名： | 张臣发 乔绪 |
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| 作者单位： | 张家口师范专科学校物理系，张家口市第四中学 张家口，075028，张家口，075000 |
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| 摘 要： | 磁电系电表的扩程实验,通常采用串联分压电阻或并联分流电阻的方法.在实验中发现,表头的内阻在不同环境温度下,其值有很大的偏差,这种偏差引起改装表测量结果的误差,称为温度误差.文章给出了电表的温度误差原因,并给出了扩展较大量限,准确度等级要求不高(如1.5级)的电表温度补偿方法,进一步提高和完善磁电系电表扩程实验,为修理和制作大量程电表提供参考技术.
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| 关 键 词： | 电表内阻 温度系数 温度的补偿 补偿电阻 允许误差 准确度等级 |
The Temperature Error and its Compensation of Internal Resistance of Magnetoelectric Ammeter |
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| Zhang Chenfa Physics Dept.,Zhangjiakou Teachers College,Zhangjiakou,
Qiao Xu No. Middle School of Zhangjiakou City,Zhangjiakou,.The Temperature Error and its Compensation of Internal Resistance of Magnetoelectric Ammeter[J].Journa of Hebei North University:Natural Science Edition,2003(3). |
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| Authors: | Zhang Chenfa Physics Dept Zhangjiakou Teachers College Zhangjiakou Qiao Xu No Middle School of Zhangjiakou City Zhangjiakou |
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| Institution: | Zhang Chenfa Physics Dept.,Zhangjiakou Teachers College,Zhangjiakou,075028,
Qiao Xu No.4 Middle School of Zhangjiakou City,Zhangjiakou,075000) |
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| Abstract: | The range-enlarging experiment of magnetoelectric ammeter is always rea- lized by means of the split-pressure of resistance in the series connection and the split-flow of resistance in the parallel connection.In the experiment,the temperature error is often found.This paper analyses the causes of this error and offers some ways of temperature compensation,which could improve and such experiments and provides some reference technology of making and repairing the large-range ammeter. |
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| Keywords: | internal resistance of ammeter temperature coefficient temperature compensation compensation resistance allowable errors grades of accuracy |
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