对于一般动圈毫伏温度仪表所指示的温度值,由热电偶的作用原理可知,在采用了温度补偿导线的场合,已将热电偶的冷端延伸到动圈仪表接线端处。因此,它所产生的热电动势,是热电偶的工作端(热接点)对于仪表接线端处的温差热电势。其式为: E_(AB)(t,t_0)=e_(AB)(t)+[-e_(AB)(t_0)]=e_(AB)(t)-e_(AB)(t_0) For the general dynamic millivolt temperature instrumentation indicated by the temperature, the principle of the role of the thermocouple shows that in the case of the use of temperature compensation wire, the thermocouple has been extended to the cold end of the dynamic instrument terminal. Therefore, the thermoelectromotive force it produces is the thermoelectric thermoelectric potential at the working end (hot junction) of the thermocouple for the meter terminal. The equation is: E_ AB ⁢ t ⁢ t_0 = e_AB + t - e_AB ⁢ t_0 = e_AB - t - e_AB - t_0 -