%A TANG Xubing, WANG Wenming, DU Zhubo, YANG Xianglin, SUN Yun %T Experimental Improvement of Measuring Ｒesistance Temperature Coefficient with the Double Arm Bridge %0 Journal Article %D 2023 %J Physical Experiment of College %R 10.14139/j.cnki.cn22-1228.2023.05.012 %P 53-56 %V 36 %N 5 %U {https://dawushiyan.jlict.edu.cn/CN/abstract/article_1916.shtml} %8 %X

Accurate temperature control is the key to measuring the temperature coefficient of metal resistance．Based on a temperature control device composed of PTC heating plate，micro-controller，temperature sensor，metal cavity，etc．，to achieve heating，temperature control，and temperature measurement of enameled copper wire．The improved experimental device has accurate temperature control，good linearity of experimental data．Linear correlation coefficient Ｒ 2 is over 0．999，and the measurement result is much closer to the theoretical value．