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Response time correlations for platinum resistance thermometersThe 'plunge method' recommended by ASTM has been used to determine the time constant of 100-ohm platinum resistance thermometers (PRT) considered for use in the National Transonic Facility. It is shown that the response time of ventilated PRT can be correlated with the reciprocal of the heat transfer coefficient in a given field. Universal correlations are established for the 100- and 1000-ohm PRT with uncertainties of 20 and 30 percent, respectively. The correlations are found to be consistent with the uncertainty involved in heat transfer correlations available in the literature and are recommended for use in flowing liquids and gases.
Document ID
19850045839
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pandey, D. K.
(Old Dominion Univ. Norfolk, VA, United States)
Ash, R. L.
(Old Dominion University Norfolk, VA, United States)
Dillon-Townes, L. A.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 12, 2013
Publication Date
May 1, 1985
Subject Category
Instrumentation And Photography
Accession Number
85A27990
Funding Number(s)
CONTRACT_GRANT: NAS1-17099
Distribution Limits
Public
Copyright
Other

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