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What is thermocouple?

Thermocouple is an electrical device, consisting of two dissimilar metals that jointed together at one end and seperated at the other. The two metals generate voltage that is commonly measured in millivolt (mV). This phenomenon is known as the thermoelectrics or Seebeck effect. Each type of thermocouple is manufactured in differnet combination of metals that is widely used in measuring tempearture. Thermocouples types include Type K thermocouple, Type J thermocouple, Thermocouple T, Thermocouple E, Thermocouple B, Thermocouple R, Thermcouple S and RTDs (PT100).