RTD Sensor

A Pt100/Pt1000 RTD is a type of temperature sensor. It consists of an element that uses resistance to measure temperature. Often platinum is used for the element which is the reason why they are often called platinum resistance thermometers (PRTs). Other common names include RTDs (short for resistance temperature detector) and depending on the element type Pt100, Pt200, Pt500 or Pt1000.


Sensor typePlatinum Resistance, Pt100 or Pt1000
Ice point resistance100Ω or 1000Ω Ohms
Fundamental interval (0°C to 100°C)38.5Ω nominal (100Ω)
385Ω nominal (1000Ω)
Measuring range-50~200°C, -50~350°C, -50~600°C
Tolerance classDIN Class A or B
Response time10S (0.63τ)
Insulation Resistance100Mohm
Cable materialPVC, Teflon, Silicone, Fiberglass
HousingSUS304 or SUS316
European / British StandardConforms to IEC 60751:2008 / BS EN 60751:2008