Loading…
Investigation of the Reproducibility of Melting and Freezing Curves for Tin in a Miniature Cell
We studied the possibility of realizing the International Temperature Scale 1990 tin fixed point using a miniature cell and a portable temperature calibrator to improve the calibration accuracy of small high-precision platinum resistance thermometers so that it is equal to that of a Class 2 resistan...
Saved in:
Published in: | Measurement techniques 2018-08, Vol.61 (5), p.494-500 |
---|---|
Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | We studied the possibility of realizing the International Temperature Scale 1990 tin fixed point using a miniature cell and a portable temperature calibrator to improve the calibration accuracy of small high-precision platinum resistance thermometers so that it is equal to that of a Class 2 resistance thermometer. We show that the melting curves for 99.999% pure tin in a miniature cell cannot be used for this purpose. We determined the amount by which the liquidus temperature for Russian-produced commercial-grade tin is reduced due to impurities. We used the calibration methods developed in this paper to determine the optimum conditions for reproducibility of the freezing curve, and studied the properties of these curves. |
---|---|
ISSN: | 0543-1972 1573-8906 |
DOI: | 10.1007/s11018-018-1457-7 |