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Thermocouple temperature measurement principle of _ instrument

by:JVTIA     2020-10-29
Thermocouple is two different material a conductor or semi-conductor welding, form a closed loop. Due to two different metal carries different number of electrons, when two conductor when there is a temperature difference between the two fixation point of high potential to low potential discharge phenomenon occurs, thus formed in the loop current, the bigger the temperature difference, the greater the current, this kind of phenomenon called the thermoelectric effect, also called the seebeck effect. Thermocouple is in using this effect to work.
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