Uploaded June 2026 | Updated September 2026, 6 days ago

---

Thermocouple sensors (TCs) are widely used for temperature measurement in process automation.

In this video, you will learn how thermocouples work and why they are essential for industrial applications. The physical principle behind thermocouples, the Seebeck effect, is explained and you can see how a temperature difference between two dissimilar metals generates a measurable voltage. You will also understand the function of hot and cold junctions, how temperature transmitters ensure accurate measurement through cold junction compensation, and the different TC types.

00:00 Temperature measurement: RTD vs. TC
00:24 The Seebeck effect explained
00:43 Thermocouple structure: hot and cold junction
01:10 How voltage is produced
01:53 Why two dissimilar metals are used
02:23 Temperature difference and reference measurement
02:43 Cold junction compensation with transmitters
03:09 Extension wires vs. transmitter setup
03:23 Types of thermocouples and characteristics
03:42 Applications in harsh environments

▶ Learn more about thermocouple thermometers from Endress+Hauser: https://eh.digital/3PNmVli