【摘要】 介绍用联机技术改造自装差热仪做差热分析,用Delphi语言编制专用程序,实现定时间距采集数据同时在屏幕上动态显示差热图;实验操作完毕,打印出差热图。对比CuSO4·5H2O脱水温度和Sn的熔点实验证明,联机方式明显提高了测试精度。更多还原

【Abstract】 This article described a self\|assembled setup of DTA, which obtains thermal signals from a computer interface on the Windows system. Using a special program of　Delphi language, the plot of time against temperature can be acquired and the DTA figure can be displayed. After experiment, DTA plots can be printed on paper by a printer. Both the dehydration experiment of CuSO4·5H2O and the measurement of melting point of Sn indicate that the data precision is apparently improved on this setup. 更多还原