A comparison of PRTs at the Cu–Ag eutectic point (780 °C)

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DOIResolve DOI: http://doi.org/10.1088/0026-1394/41/3/013
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TypeArticle
Journal titleMetrologia
ISSN0026-1394
Volume41
IssueJune 3
Pages198203; # of pages: 6
AbstractTwelve platinum resistance thermometers (PRTs) were repeatedly calibrated between the triple point of water and the silver point. During each calibration their resistance was also determined at the Cu–Ag eutectic point. The temperatures indicated by the PRTs were within ±1 mK, except for one that differed by 4 mK from the average, 779.6360 °C, of the other eleven. Four of these PRTs had a lower W (Ag) value than acceptable by the ITS-90, including the one that differed by 4 mK. Thus, within this set of PRTs all the 'acceptable' ones and three out of four 'unacceptable' ones indicated a unique temperature within 1 mK halfway between the aluminium and the silver points.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier1011709x
NRC number628
NPARC number8899844
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Record identifier6733c138-d6da-4b9c-98b7-e2b092c40597
Record created2009-04-22
Record modified2016-05-09
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