热学实验中的控温计时装置

A Device Controlling Temperature and Registering Time in Thermal Experiments

介绍一种可以在热学实验系统中进行温度测量、控制和时间记录的实验装置的结构和工作原理.使用该装置可以非常方便地控制、测量热学系统的温度,其所测温度读数精度可达0.01℃.同时,又可以方便地记录系统加热过程所用的时间.由此,可以准确地计量热力学系统的热量变化,使实验结果精度提高.

We have made an experimental device which can control temperature and record time and which will be usefull in college thermal experiments. The structure and the working principles of the device are presented in this paper. Using this device can easily control and read the temperature of the heat system, accurately to 0.01 ℃. Meanwhile, this device can also conveniently count the time the system has been heating. So, this device can measure accurately the change of quantity of heat system and make the result of experiment accurate.