Resistance thermometer Repeatability
The degree of accord between two successive readings with a thermometer is its repeatability. Loss of repeatability results from permanent or temporary changes to the resistance characteristics of the element and may be caused by exposing the thermometer to temperatures at or beyond the endpoints of its specified range.
A repeatability test cycles the thermometer between low and high temperatures; any change to R is noted.
A typical repeatability rating for 0ºC industrial platinum resistance thermometers is 0.1ºC.