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http://dx.doi.org/10.5369/JSST.2008.17.3.188

Development of the calibration system for very accurate thermometers at low temperatures  

Yang, In-Seok (Division of Physical Metrology, Korea Research Institute of Standards and Science)
Song, Chang-Ho (Division of Physical Metrology, Korea Research Institute of Standards and Science)
Kang, Kee-Hoon (Division of Physical Metrology, Korea Research Institute of Standards and Science)
Kim, Yong-Gyoo (Division of Physical Metrology, Korea Research Institute of Standards and Science)
Publication Information
Journal of Sensor Science and Technology / v.17, no.3, 2008 , pp. 188-194 More about this Journal
Abstract
For the accurate calibrations of thermometers at low temperatures, triple points of oxygen and argon have been realized using sealed-type triple point cells. The triple points were realized with both adiabatic and continuous heating methods. The resistance of three capsule-type standard platinum resistance thermometers were measured at the triple points of oxygen, argon, mercury and water for the calibrations of these thermometers in the range from $-220^{\circ}C$ to $0.01^{\circ}C$. The extended uncertainty, with the coverage factor of 2, of the calibration in this range is smaller than 1 mK.
Keywords
temperature standards; low temperatures; triple point of oxyen; capsule type SPRT;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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