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Title: Optimization of heat treatment and calibration procedures for high temperature irradiation resistant thermocouples [The development of calibration procedures for high temperature irradiation resistant thermocouples]

Here, a detailed description is provided for the optimization of heat treatment and calibrating procedure for Idaho National Laboratory’s high temperature irradiation resistant thermocouples (HTIR-TC). Also discussed is the implication of the procedures on the overall performance of the HTIR-TC finished product; in particular, for the case of long lead sections that are typical of sensors deployed in nuclear reactors. The effect on the measurement accuracy of fluctuations of the reference temperature and localized heating along the sensor lead is also investigated. A calibration graphical user interface (GUI) and accompanying script is presented for unifying the calibration process. A fifth-order polynomial function was found to be best for fitting HTIR-TC calibration data. The performance of the HTIR-TCs subject to the optimized heat treatment and calibration procedures is shown to be robust and consistent with other TC industry standards. Electromotive force curves versus length of the TC are presented to clarify positioning of TCs in general and how its effect on the calibrated temperatures.
Authors:
ORCiD logo [1] ; ORCiD logo [1] ; ORCiD logo [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Report Number(s):
INL/JOU-17-43073-Rev000
Journal ID: ISSN 1073-9149
Grant/Contract Number:
AC07-05ID14517
Type:
Accepted Manuscript
Journal Name:
Instrumentation Science and Technology
Additional Journal Information:
Journal Volume: 46; Journal Issue: 4; Journal ID: ISSN 1073-9149
Publisher:
Taylor & Francis
Research Org:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; in-pile instrumentation; high temperature sensors; irradiation resistant sensors; thermocouple; HTIR TC
OSTI Identifier:
1480458

Skifton, Richard, Palmer, Joe, and Calderoni, Pattrick. Optimization of heat treatment and calibration procedures for high temperature irradiation resistant thermocouples [The development of calibration procedures for high temperature irradiation resistant thermocouples]. United States: N. p., Web. doi:10.1080/10739149.2017.1389754.
Skifton, Richard, Palmer, Joe, & Calderoni, Pattrick. Optimization of heat treatment and calibration procedures for high temperature irradiation resistant thermocouples [The development of calibration procedures for high temperature irradiation resistant thermocouples]. United States. doi:10.1080/10739149.2017.1389754.
Skifton, Richard, Palmer, Joe, and Calderoni, Pattrick. 2017. "Optimization of heat treatment and calibration procedures for high temperature irradiation resistant thermocouples [The development of calibration procedures for high temperature irradiation resistant thermocouples]". United States. doi:10.1080/10739149.2017.1389754. https://www.osti.gov/servlets/purl/1480458.
@article{osti_1480458,
title = {Optimization of heat treatment and calibration procedures for high temperature irradiation resistant thermocouples [The development of calibration procedures for high temperature irradiation resistant thermocouples]},
author = {Skifton, Richard and Palmer, Joe and Calderoni, Pattrick},
abstractNote = {Here, a detailed description is provided for the optimization of heat treatment and calibrating procedure for Idaho National Laboratory’s high temperature irradiation resistant thermocouples (HTIR-TC). Also discussed is the implication of the procedures on the overall performance of the HTIR-TC finished product; in particular, for the case of long lead sections that are typical of sensors deployed in nuclear reactors. The effect on the measurement accuracy of fluctuations of the reference temperature and localized heating along the sensor lead is also investigated. A calibration graphical user interface (GUI) and accompanying script is presented for unifying the calibration process. A fifth-order polynomial function was found to be best for fitting HTIR-TC calibration data. The performance of the HTIR-TCs subject to the optimized heat treatment and calibration procedures is shown to be robust and consistent with other TC industry standards. Electromotive force curves versus length of the TC are presented to clarify positioning of TCs in general and how its effect on the calibrated temperatures.},
doi = {10.1080/10739149.2017.1389754},
journal = {Instrumentation Science and Technology},
number = 4,
volume = 46,
place = {United States},
year = {2017},
month = {12}
}