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Title: Transient Adjustments for Metal-Sheathed Thermocouples on Metal Plates (Shrouds).

Abstract

This report provides guidance on how to adjust temperature measurements from mineral- insulated, metal-sheathed (MIMS) thermocouples (TCs) mounted on metal plates to correct for slow transient response. This information is needed so that more accurate transient temperature measurements can be made. These more accurate temperature measurements are of benefit for both qualification of hardware and as data sets for model validation. The approach was to use a relatively simple first order adjustment to the MIMS TC reading, as compared to a more accurate metal plate temperature measurement. MIMS TCs are used to improve reliability. Results from four data sets were analyzed to determine the time constraint; an overall average of 5.0 s was obtained. ACKNOWLEDGEMENTS The author would like to acknowledge the support of N. R. Keltner during the original testing where the three flat shroud data sets came from, and for his support in writing this report. Financial support was provided by DOE-EM Packaging Certification Program: James Shuler and Lawrence Gelder, Program Managers. Their support is greatly appreciated. Also acknowledged is Jill Suo- Anttila for providing a test where we could add intrinsic TCs, and for allowing use of the ungrounded junction data for the cylindrical shroud tests. Last,more » thanks to Jeff Energer for his review of the document and for providing valuable comments.« less

Authors:
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1483462
Report Number(s):
SAND2018-13272
670260
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Nakos, James T. Transient Adjustments for Metal-Sheathed Thermocouples on Metal Plates (Shrouds).. United States: N. p., 2018. Web. doi:10.2172/1483462.
Nakos, James T. Transient Adjustments for Metal-Sheathed Thermocouples on Metal Plates (Shrouds).. United States. doi:10.2172/1483462.
Nakos, James T. Thu . "Transient Adjustments for Metal-Sheathed Thermocouples on Metal Plates (Shrouds).". United States. doi:10.2172/1483462. https://www.osti.gov/servlets/purl/1483462.
@article{osti_1483462,
title = {Transient Adjustments for Metal-Sheathed Thermocouples on Metal Plates (Shrouds).},
author = {Nakos, James T.},
abstractNote = {This report provides guidance on how to adjust temperature measurements from mineral- insulated, metal-sheathed (MIMS) thermocouples (TCs) mounted on metal plates to correct for slow transient response. This information is needed so that more accurate transient temperature measurements can be made. These more accurate temperature measurements are of benefit for both qualification of hardware and as data sets for model validation. The approach was to use a relatively simple first order adjustment to the MIMS TC reading, as compared to a more accurate metal plate temperature measurement. MIMS TCs are used to improve reliability. Results from four data sets were analyzed to determine the time constraint; an overall average of 5.0 s was obtained. ACKNOWLEDGEMENTS The author would like to acknowledge the support of N. R. Keltner during the original testing where the three flat shroud data sets came from, and for his support in writing this report. Financial support was provided by DOE-EM Packaging Certification Program: James Shuler and Lawrence Gelder, Program Managers. Their support is greatly appreciated. Also acknowledged is Jill Suo- Anttila for providing a test where we could add intrinsic TCs, and for allowing use of the ungrounded junction data for the cylindrical shroud tests. Last, thanks to Jeff Energer for his review of the document and for providing valuable comments.},
doi = {10.2172/1483462},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}