longchina
第1楼2009/11/26
谢谢你的回答,但是公式中的升温速度一般都可以设置,所以说这个值是否是个常数?
就这个问题,我也问了下国外厂家的热线,下面是回复
Thank you for contacting the application support hotline. The DSC measurement goes into two very simple relationships.
1 watt = 1 amp (current) * 1 volt
In a DSC, a very stable current source is used, thereby keeping current as a fixed parameter throughout the DSC experiment. From the above equation one can then calculate the total watts. The Watt is then divided by the total sample size entered into the software.
When you integrate an area, the area is integrated on a time scale using the relationship of 1Watt = 1Joule/second.
感觉理解下来,也可以用U的平方除以电阻,就换算成功率单位了,再通过积分除以质量。DSC内部会真的放个小电流源吗,如果是这样,对前面的热电偶会产生温漂啊。
还是不很清楚到底应该是如何去计算的。