| Title | On the thermodynamic accuracy of the ITS-90: Platinum resistance thermometry below 273 K |
| Publication Type | Journal Article |
| Year of Publication | 1995 |
| Authors | Nicholas, J.V. |
| Journal | Metrologia |
| Volume | 32 |
| Issue | 2 |
| Pagination | 71 - 77 |
| Date Published | 1995 |
| ISSN | 00261394 (ISSN) |
| Abstract | An analysis of the resistance-temperature relationship for six low-temperature platinum resistance thermometers is carried out to determine the thermodynamic accuracy of the ITS-90 below 273 K. The use of smooth thermodynamic functions in a model equation for platinum resistance indicates that there is a significant deviation of the ITS-90 from thermodynamic values over the range 80 K to 270 K. The deviation is consistent with recent results in acoustic and gas thermometry, namely around 10 mK at 150 K. For this reason a re-evaluation of the existing thermodynamic data on the temperature scale appears warranted. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-1442356184&partnerID=40&md5=73c764aa9d86ebbc8372bf57b76f1bd6 |
| DOI | 10.1088/0026-1394/32/2/001 |
