Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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

Keywords

platinum, Standard Reference Material, thermocouple, thermoelectric material, thermal emf

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 June 15, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created March 9, 2016, Updated November 10, 2018