In the area of physical measurement technology, temperature is the most frequently measured variable. Especially in the field of process technology, the temperature measurements are the "metrological backbone".
In this white paper, temperature measurement techniques will be illustrated of the two most common temperature sensors: the Resistance Temperature Detector (RTD) (Pt100) and the thermocouple.
Concerning RTDs, the utilized physical effect is that electrical resistance varies with temperature. The relationship between the temperature and the resistance can be described by an equation.
The full white paper is available as a PDF in the column on the right under "Downloads".