A common misconception about Type K EGT thermocouples is that they follow a resistance-to-temperature curve like RTDs or thermistors—but they don’t. In this video, we break down how a Type K thermocouple actually works and why it produces a millivolt signal instead of a resistance value. Learn how the Seebeck effect generates a voltage based on temperature, what kind of output to expect, and why proper instrumentation—like a pyrometer or signal conditioner—is required to interpret the signal accurately. We also cover when resistance measurements are useful (and when they aren’t), along with common mistakes that can lead to incorrect readings. If you’re working with EGT sensors, this is essential knowledge for accurate measurement and system setup. For additional pricing and technical questions, CONTACT US!
