DocumentCode :
1362698
Title :
Evaluating the Resistivity-Temperature Relationship for RTDs and Other Conductors
Author :
Lacy, Fred
Author_Institution :
Dept. of Electr. Eng., Southern Univ., Baton Rouge, LA, USA
Volume :
11
Issue :
5
fYear :
2011
fDate :
5/1/2011 12:00:00 AM
Firstpage :
1208
Lastpage :
1213
Abstract :
It has long been established from experimental evidence that resistance temperature detectors (RTDs) and conductors in bulk form have an electrical resistivity that is a linear function of temperature. Although this experimental data has existed for some time, there has not been a straightforward model to explain the mechanisms leading to this relationship. In order to better understand the nature of this relationship, a microscopic model is needed so that analysis of the electrons in the material can be performed. Therefore, a theoretical framework using solid-state physics and quantum mechanics principles is presented and developed to obtain an equation for bulk conductors that relates resistivity to temperature. It is then shown that this newly developed equation produces a linear relationship for conductors and provides a very good match with experimental data obtained from platinum and nickel RTDs. Therefore, this newly developed theoretical model provides great insight into the mechanisms of experimental findings.
Keywords :
conductors (electric); electrical resistivity; quantum theory; temperature sensors; RTD; bulk conductor; electrical resistivity; electrons analysis; microscopic model; quantum mechanics principle; resistance temperature detector; solid-state physics; straightforward model; temperature linear function; Conductors; Equations; Lattices; Materials; Mathematical model; Platinum; Resistance; Callendar–van Dusen; conductivity; mean free path; resistance temperature detector (RTD); temperature sensor;
fLanguage :
English
Journal_Title :
Sensors Journal, IEEE
Publisher :
ieee
ISSN :
1530-437X
Type :
jour
DOI :
10.1109/JSEN.2010.2089977
Filename :
5611564
Link To Document :
بازگشت