How do Thermistors work?

Thermistors operate over a relatively small temperature range compared to other temperature sensors, such as RTDs and Thermocouples. They are generally very accurate, repeatable, interchangeable and precise within their narrow temperature range, typically 0-200°C.

Thermistors are normally specified at 25°C and have an R-T curve with high nominal resistance values, typically between 1,000 to 10,000 Ω and even higher in some cases.