常用测量仪器的使用及测量误差的计算

介绍了测量误差的来源，以电压表和电流表测量电路中的电压和电流为例，提出了减小仪表测量误差的方法，包括采用电压表、电流表在不同量程下进行2次测量的计算法，合理选择电阻挡的量程，减少示波器的测量误差，合理选择仪表的准确度等．实验结果表明，采用这些方法可以有效减少测量误差．

Use and Measurement Error Calculation of Measuring Instrument

This paper introduces the sources of errors in measurement. Taking the voltage and current of the measuring circuits in voltmeter and ammeter as examples, this paper puts forward methods to reduce measurement errors, including calculating method of second measurement of voltmeter and ammeter in different ranges, reasonably selecting resistance range, decreasing measurement error of oscillographs, reasonably selecting accuracy of instrument, etc. Experiment results show that these methods can effectively reduce measurement error.