Activities Manual for Programmable Logic Controllers
Activities Manual for Programmable Logic Controllers
5th Edition
ISBN: 9781259679568
Author: Petruzella, Frank
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 6, Problem 19RQ

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Principle of operation of a thermocouple:

  • Thermocouple refers to a temperature sensor which works on the principle that the joining of two dissimilar metals at different temperatures causes a small DC voltage to be generated.
  • In other words, the generated DC voltage is proportional to the difference in temperatures between the hot and cold junction of a thermocouple.
  • The hot junction refers to the junction where the two metals A and B are joined...

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