Journal
INTERNATIONAL JOURNAL OF THERMOPHYSICS
Volume 36, Issue 2-3, Pages 229-239Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10765-014-1768-0
Keywords
Argon triple point; Platinum thermometer; Temperature scale
Funding
- National Center of Research and Development (Poland) [PBS1/A9/6/2012 (ID:179275)]
Ask authors/readers for more resources
This paper presents an apparatus for the calibration of long-stem platinum resistance thermometers at the argon triple point , designed at the Institute of Low Temperature and Structural Research, Poland (INTiBS). A hermetically sealed cell filled at the Istituto Nazionale di Ricerca Metrologica, Italy with high purity gas (6N) is the main element of this apparatus. The cell is placed in a cryostat fully immersed in liquid nitrogen. A temperature-controlled shield ensures the quasi-adiabatic condition needed for proper realization of the phase transition. A system for correcting the temperature distribution along the thermometer well is also implemented. The cell cooling and argon solidification is carried out by filling the thermometer well with liquid nitrogen. A LabVIEW computer program written at INTiBS automatically controls the triple-point realization process. The duration of a melting plateau in the apparatus lasts for about 24 h. The melting width for between 20 % and 80 % was mK. The reproducibility of the plateau temperature is better than .
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available