An evolutionary approach to updating the international temperature scale

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Proceedings titleBook of Abstracts - ITS9 Los Angeles 2012
Conference9th International Temperature Symposium (ITS9), 19-23 March 2012, Los Angeles, California, USA
SubjectInternational Temperature Scale; ITS-90; platinum resistance thermometer; PRT; thermodynamic temperature
AbstractSince its inception in 1927, the International Temperature Scale has changed to meet the needs of the time in a predictable, evolutionary fashion. Occasionally, the changes to its basis formulation could be considered revolutionary. The ITS protocol specifies phase transitions with assigned temperatures (the defining fixed points), defining instruments (thermometers), and interpolating (or extrapolating) equations. Over time, the selection of fixed points and their assigned temperatures have changed, defining instruments have been added and deleted, and the equations have undergone change, particularly for the temperature range defined by the platinum resistance thermometer.
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AffiliationNational Research Council Canada; Measurement Science and Standards
Peer reviewedNo
NPARC number21268450
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Record identifier346f7c44-7454-4c80-8e57-0176793d7ff1
Record created2013-07-22
Record modified2016-05-09
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