A Revised Assessment of Calibration Uncertainties for Capsule Type Standard Platinum and Rhodium-Iron Resistance Thermometers

Published

March 1, 1998

Author(s)

Weston L. Tew, Gregory F. Strouse, Christopher W. Meyer

Abstract

Calibration uncertainties for capsule type standard platinum and rhodium-iron resistance thermometers are reviewed and updated. Calibration procedures, thermometer characteristics, scale realization methods, and measurement techniques are described in detail. Expanded uncertainties are tabulated for calibrations of standard platinum resistance thermometer between 13.8033 K and 505.078 K and for rhodium-iron resistance thermometers between 0.65K and 83.8058 K. The calibration uncertainties are revised estimates of similar assessments presented earlier in NISTIR 5319 for the capsule type thermometers. The revision is primarily due to recent advances in ITS-90 realizations at NIST below 83.8058 D.

Citation

NIST Interagency/Internal Report (NISTIR) - 6138

Report Number

6138

NIST Pub Series

NIST Interagency/Internal Report (NISTIR)

Pub Type

NIST Pubs

Keywords

calibration, ITS-90, resistance thermometers, temperature, uncertainty

Citation

Tew, W. , Strouse, G. and Meyer, C. (1998), A Revised Assessment of Calibration Uncertainties for Capsule Type Standard Platinum and Rhodium-Iron Resistance Thermometers, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD (Accessed October 26, 2025)