Temperature instruments use contact or noncontact methods to measure temperature.

Temperature sensors are measurement devices that infer temperature by sensing some physical characteristic (i.

RTD (resistive temperature device) elements are wire windings or other thin-film serpentines that exhibit changes in resistance with changes in temperature

RTD temperature probes convert the RTD resistance measurement to a current signal, eliminating the problems inherent in RTD signal transmission via lead resistance.

Thermistors are thermally-sensitive devices whose electrical resistance varies with temperature.

Signal conditioning products provide amplification, filtering, converting, and other processes required to make sensor output suitable for reading by computer boards

Noncontact infrared temperature sensors absorb ambient infrared (IR) radiation given off by a heated surface.