What is a Thermocouple? and How to test Thermocouple?
Thermocouple is a temperature sensor used to figure out How hot or cold something is,
Construction: It consists of two dissimilar metal wires that are joined together to form a junction.
Working: When the temperature (Heating or Cooling) at the junction changes a small measurable voltage will generate at the other ends of the wires. The amount of voltage produced will depends on the amount of temperature at the junction.
Checking of Thermocouple: Sensors like thermocouples produces small voltages in terms of DC millivolts in an electric circuit, We can measure these millivolts with a digital multimeter.
Timestamps for various topics covered in this video are as follows:
0:13 What is a Thermocouple,
0:29 Working principle of Thermocouple,
1:04 How to measure DC millivolts with multimeter,
1:22 Checking of Thermocouple.
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This video is helpful for students and working professionals,
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