FAQ-Fundamentals of RTD temperature sensors

 

What is rtd temperature sensor?

The acronym “RTD” stands for “Resistance Temperature Detector. Temperature is sensed via a corresponding change in the resistance of the element. RTD elements are typically made of Platinum, Copper or Nickel.

How does a rtd tempeature sensor work?

Materials typically used in RTD sensors have a positive temperature coefficient. This means that a rise in temperature results in an increased resistance – this change of resistance is then used to detect and measure temperature changes.

Why use a plantinum rtd instead of copper?

Platinum RTD's offer a wider temperature range together with better stability and corrosion resistance in comparion to Copper RTD.

Which metal as rtd is better between copper, plantinum and nickel?

Platinum, Nickel and Copper are the most widely used RTD sensing elements. Platinum exhibits the best stability and temperature range, whilst both Nickel and Copper have reduced temperature ranges together with linearity and oxidation issues specific to each.