Temperature measurement using resistance thermometers is based on the characteristic, common to all conductors and semiconductors, of changing their electrical resistance as the temperature changes. PT100/PT1000 sensor has an ohmic value of 100 at a temperature of 0 °C and its coefficient of variation is 0.00385 Ohms per °C.
Widely used across many applications, they are available in many different versions according to process connection type, dimensions, material and length of cable.
