The most commonly used is the Pt 100 Ohm probe
The resistance probe offers a measurement of great accuracy and very good long-term stability.
A Pt 100 Ohm probe corresponds to a platinum resistance whose initial value is 100 Ohms for a temperature of 0°C.
The measuring element consists of wound platinum wires whose resistance varies according to the temperature. The resistance / temperature correspondence is documented in the IEC 60751 standard.
The temperature probe is often delivered with a connection head (see photo opposite).