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http://dx.doi.org/10.5369/JSST.2008.17.6.429

Development of the automatic calibration system for industrial resistance 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 (Office of Policy Research, 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.6, 2008 , pp. 429-436 More about this Journal
Abstract
A system is designed and fabricated for the automatic low temperature calibration by comparison of industrial resistance thermometers. The cryostat is suitable for the calibration of four capsule type thermometers and four long stem thermometers. By the automatic temperature control of the cryostat, we could calibrate thermometers from $-200^{\circ}C$ to $0^{\circ}C$ for ${\sim}15$ hours by one fill of liquid nitrogen in the test run of the system. The uncertainty of the calibration for industrial platinum resistance thermometers using the automatic system is about 30mK with a 95.% confidence interval.
Keywords
low temperature thermometry; calibration by comparison; automatic calibration; temperature control;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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