论文部分内容阅读
在80～400 K精密自动绝热量热装置的基础上,运用现代控制理论和计算机技术,采用美国安捷伦公司的数据采集控制仪表 AGILENT 34970A及配套模块,实现了对绝热量热实验全过程,包括电能引入、热平衡判据、温度测量、绝热控制、热容数据的计算和处理、结果显示和打印等全自动控制。该系统结构紧凑,性能稳定,操作方便。经用量热标准物质α-Al_2O_3检测,并与美国标准局数据比较,确证该系统测试热容的相对误差小于±0.35％。
On the basis of 80 ~ 400 K precision automatic adiabatic calorimeter, using modern control theory and computer technology, using the AGILENT 34970A data acquisition and control instrumentation of American Agilent Company and its supporting modules, the whole process of adiabatic calorimetry experiment is realized, including electric energy The introduction, the heat balance criterion, the temperature measurement, the adiabatic control, the heat capacity data computation and the processing, the result demonstration and the printing and so on automatic control. The system is compact, stable performance, easy to operate. By the amount of thermal reference material α-Al 2 O 3 detection, and with the United States Bureau of Standards data, confirm the system test heat capacity relative error less than ± 0.35%.