Updated Uncertainty Budgets For NIST Thermocouple Calibrations

Published

September 11, 2013

Author(s)

Christopher W. Meyer, Karen M. Garrity

Abstract

We have recently updated the uncertainty budgets for calibrations in the NIST Thermocouple Calibration Laboratory. The purpose for the updates has been to 1) revise the estimated values of the relevant uncertainty elements to reflect the current calibration facilities and methods, 2) provide uncertainty budgets for every standard calibration service offered, and 3) make the uncertainty budgets more understandable to customers by expressing all uncertainties in units of temperature (°C) rather than emf. We have updated the uncertainty budgets for fixed-point calibrations of type S, R, and B thermocouples and comparison calibrations of type R and S thermocouples using a type S reference standard. In addition, we have constructed new uncertainty budgets for comparison calibrations of type B thermocouples using a type B reference standard as well as using both a type S and type B reference standard (for calibration over a larger range). We have updated the uncertainty budgets for comparison calibrations of base-metal thermocouples using a type S reference standard and alternately using a SPRT reference standard. Finally, we have constructed new uncertainty budgets for comparison tests of noble-metal and base-metal thermoelements using a type S reference standard. A description of these updates is presented in this paper.

Proceedings Title

Temperature: Its Measurement and Control in Science and Industry, Vol. 8

Conference Dates

March 19-23, 2012

Conference Location

Anaheim, CA

Conference Title

Ninth International Temperature Symposium

Pub Type

Conferences

Download Paper

https://doi.org/10.1063/1.4821393

Keywords

Calibration, Thermocouples, Thermoelements

Citation

Meyer, C. and Garrity, K. (2013), Updated Uncertainty Budgets For NIST Thermocouple Calibrations, Temperature: Its Measurement and Control in Science and Industry, Vol. 8, Anaheim, CA, [online], https://doi.org/10.1063/1.4821393 (Accessed December 26, 2024)