The size of the thermocouple is not related to the length and diameter of the thermocouple but is related to the temperature difference

The size of the thermocouple is not related to the length and diameter of the thermocouple but is related to the temperature difference

Because the thermoelectric potential generated by the thermocouple is not very large, sometimes the instrument cannot display it. When the material distribution of the thermocouple is uniform, then the size of the thermoelectric potential has nothing to do with the length and diameter of the thermocouple. It is related to the temperature difference;

The specific use method of thermocouple!

The use of a thermocouple thermometer is very simple. Before that, I think it is necessary to let everyone understand the working principle of this kind of thermometer. The thermocouple thermometer is connected to a composite circuit at both ends. If the temperature of the junction is different, it will generate an electromotive force. We call this phenomenon the hot spot effect. The thermocouple uses this principle to measure temperature. The end that is directly used to measure temperature is called the working end, and the other end that is not directly involved in the measurement is called the cold end. The thermometer is equipped with a display meter. The display meter will indicate the thermoelectric potential generated by the thermocouple.

An energy converter

　　 To put it simply, a thermocouple is an energy converter. He can convert electrical energy into thermal energy within a certain range. Those thermal energy will be used as the thermoelectric power generated to measure temperature. When we are dealing with the thermoelectric power of thermocouples, we should pay attention to the following issues:

　　The thermoelectric potential of a thermocouple thermometer is the difference between the temperature functions of the two ends, not the difference between the temperature functions of the cold junction and the working end of the thermocouple that we think most of the time;

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