Difference between RTD and TC

Question

Accepted Answer

RTD stands for Resistance Temperature Detector and TC stands for Thermocouple. They are both temperature sensors but differ in their principles of operation.

RTD measures temperature by correlating the resistance of a metal with temperature.
TC measures temperature based on the voltage generated by the junction of two dissimilar metals.
RTD provides higher accuracy and stability compared to TC.
RTD has a linear relationship between resistance and temperature, while TC has a non-linear relationship.
RTD is more suitable for precise temperature measurements, while TC is commonly used in industrial applications.
Examples of RTD metals include platinum, nickel, and copper, while TC types include Type K, Type J, and Type T.

Accepted Answer

RTD work - Registens temperature director
TC work - When the junction is heated or cooled, a small voltage is generated in the electrical circuit of the thermocouple which can be measured, and this corresponds to temperature.

Difference between RTD and TC

Top Neyveli Uttar Pradesh Power Calibration Engineer interview questions & answers

Popular interview questions of Calibration Engineer