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PUBLICATIONS

SRM 1967a: High-Purity Platinum Thermoelement

Published

Author(s)

Karen M. Garrity, Weston L. Tew, Dean C. Ripple

Abstract

Consisting of a 1 m long piece of 0.5 mm diameter platinum wire, SRM 1967a meets the requirements for a thermoelectric reference material for temperatures from 196 °C up to approximately 1700 °C. We have tested the thermoelectric emf of four SRM 1967a cuts versus four cuts from the prior reference standard SRM 1967 (Pt-67) lot. The tests indicate that SRM 1967a differs from SRM 1967 by less than 0.7 µV throughout its temperature range. The thermoelectric homogeneities of both lots are comparable and quite small, resulting in a standard thermoelectric material that replicates the average of the Pt-67 response to within 0.25 µV up to 250 °C and rising to 0.7 µV at 1700 °C, all at 95 % confidence.
Citation
Special Publication (NIST SP) - 260-183
Report Number
260-183
NIST Pub Series
Special Publication (NIST SP)
Pub Type
NIST Pubs

Download Paper

https://doi.org/10.6028/NIST.SP.260-183

Keywords

platinum, Standard Reference Material, thermocouple, thermoelectric material, thermal emf
Thermometry metrology and Reference materials

Citation

Garrity, K. , Tew, W. and Ripple, D. (2016), SRM 1967a: High-Purity Platinum Thermoelement, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.SP.260-183 (Accessed April 19, 2024)

Created March 9, 2016, Updated November 10, 2018