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在 8 0~ 4 0 0K自动精密绝热量热装置的基础上 ,利用美国惠普公司制造的AGILENT 34970A及配套模块 ,对绝热量热测试过程的加热和绝热控制、能量和温度测量等实现了全过程的自动控制 .热平衡判据、温度测量、绝热控制、热容数据的计算和处理、结果显示和打印均由计算机自动完成 .开发的系统结构紧凑 ,性能稳定 ,操作方便 ,用量热标准物α-Al2 O3标定 ,与美国标准局数据比较 ,相对误差小于± 0 .35 % .
On the basis of 80 ~ 400K adiabatic calorimeter, AGILENT 34970A manufactured by Hewlett-Packard Co., USA and its supporting modules are used to realize the whole process of heat and adiabatic control, energy and temperature measurement of adiabatic heat test The results show that the printing and printing by the computer automatically.Development of the system is compact, stable performance, easy to operate, the amount of thermal standard α- Al2 O3 calibration, and the United States Bureau of Standards data, the relative error is less than ± 0.35%.