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| What is the measurement principle of thermocouple |
| 2011-12-2 13:33:41 |
工作原理是基于赛贝克（seeback）效应,即两种不同成分的导体两端连接成回路，如两连接端温度不同，则在回路内产生热电流的物理现象。 The working principle of a thermocouple is based on the Seeback effect, that is, two ends of conductors of two different components are connected into a loop. If the two connection ends have different temperatures, a physical phenomenon of thermal current is generated in the loop.
A thermocouple consists of two different wires (hot electrodes), one end of which is welded to each other to form the measuring end (also called the working end) of the thermocouple. 的另一端（参比端或自由端）则与显示仪表相连。 Insert it into the medium of the temperature to be measured; the other end (reference end or free end) of the thermocouple is connected to the display instrument. 产生的热电动势。 If there is a temperature difference between the measuring end and the reference end of the thermocouple , the display meter will indicate the thermoelectromotive force generated by the thermocouple .