Difference between RTD and TC

Question

Accepted Answer

RTD measures temperature using resistance while TC measures using voltage.

RTD stands for Resistance Temperature Detector while TC stands for Thermocouple.
RTD measures temperature by detecting the change in resistance of a metal wire while TC measures temperature by detecting the voltage generated by two different metals.
RTD is more accurate and stable than TC but is also more expensive.
TC can measure a wider range of temperatures than RTD.
Examples of RTD metals include platinum, nickel, and copper while examples of TC metals include iron, copper, and chromel.
RTD is commonly used in industries such as food and beverage, pharmaceuticals, and chemical while TC is commonly used in industries such as power generation, oil and gas, and aerospace.