电流表改装的实验研究  

Experimental Research on Ammeter Refit

作　　者：李义[1] 李久会[1] 敬晓丹[1] 袁泉[1] 

机构地区：[1]辽宁工业大学理学院,辽宁锦州121001

出　　处：《辽宁工业大学学报（自然科学版）》2017年第3期187-189,共3页Journal of Liaoning University of Technology(Natural Science Edition)

基　　金：辽宁省教育厅教学改革研究项目(UPRP20160289)

摘　　要：分别采用半偏法、替代法、电桥法和满量程校准法将量程为200 A的电流表改装成量程为20 m A的电流表,并绘制校正曲线。校正结果显示4种方法得到的改装表准确度等级分别为1.0、0.2、0.1和0.02,可见满量程校准是更为准确的方法。The ammeter with full scale 200 A is refitted to an ammeter with full scale 20 mA by using half-deviation, substitution method, bridge method and full scale calibration respectively in this paper, and the calibration curves are plotted. The calibration results show that the accuracy class of refitted ammeter is 1.0, 0.2, 0.1 and 0.02 respectively. Thus the full scale calibration is a more accurate method.

关 键 词：物理实验 电流表改装 准确度等级 满量程校准 

分 类 号：O4-33[理学—物理] O4-34