U.S. Department of EnergyOffice of Scientific and Technical Information
Dual high-temperature measurements using Johnson-noise thermometry
Abstract
A temperature transducer fabricated of tungsten-rhenium thermocouple elements terminated in a rhenium coil acts as a dual temperature measuring device due to both a dc output from the thermocouple elements and a thermally-generated noise emitted from the rhenium coil. In performed tests, a bare wire thermocouple in close proximity to the test transducer acted as the reference temperature measuring device. Comparisons of the JNPT and the reference at temperatures up to 1500/sup 0/C generally yielded agreement within 4% of reading. However, because of reduced insulation resistance and interference due to spurious (non-thermal) noise, the JNPT transducer exhibited increasingly inaccurate temperature measurements above 1500/sup 0/C. Hafnia- and beryllia-insulated transducers were fabricated for these tests. At all temperatures, beryllia yielded a higher insulation resistance by a factor of 10.
- Authors:
- Publication Date:
- Research Org.:
- Hanford Engineering Development Lab., Richland, WA (USA)
- OSTI Identifier:
- 5339269
- Report Number(s):
- HEDL-SA-2542-FP; CONF-820306-11
ON: DE82018960; TRN: 82-015935
- DOE Contract Number:
- AC06-76FF02170
- Resource Type:
- Conference
- Resource Relation:
- Conference: 6. symposium on temperature, Washington, DC, USA, 14 Mar 1982
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; LOFT REACTOR; REACTOR INSTRUMENTATION; THERMOCOUPLES; ACCURACY; PERFORMANCE TESTING; MEASURING INSTRUMENTS; PWR TYPE REACTORS; REACTORS; RESEARCH AND TEST REACTORS; TANK TYPE REACTORS; TEST REACTORS; TESTING; WATER COOLED REACTORS; WATER MODERATED REACTORS; 220600* - Nuclear Reactor Technology- Research, Test & Experimental Reactors
Citation Formats
Billeter, T R, and Cannon, C P. Dual high-temperature measurements using Johnson-noise thermometry. United States: N. p., 1981.
Web.
Billeter, T R, & Cannon, C P. Dual high-temperature measurements using Johnson-noise thermometry. United States.
Billeter, T R, and Cannon, C P. 1981.
"Dual high-temperature measurements using Johnson-noise thermometry". United States.
@article{osti_5339269,
title = {Dual high-temperature measurements using Johnson-noise thermometry},
author = {Billeter, T R and Cannon, C P},
abstractNote = {A temperature transducer fabricated of tungsten-rhenium thermocouple elements terminated in a rhenium coil acts as a dual temperature measuring device due to both a dc output from the thermocouple elements and a thermally-generated noise emitted from the rhenium coil. In performed tests, a bare wire thermocouple in close proximity to the test transducer acted as the reference temperature measuring device. Comparisons of the JNPT and the reference at temperatures up to 1500/sup 0/C generally yielded agreement within 4% of reading. However, because of reduced insulation resistance and interference due to spurious (non-thermal) noise, the JNPT transducer exhibited increasingly inaccurate temperature measurements above 1500/sup 0/C. Hafnia- and beryllia-insulated transducers were fabricated for these tests. At all temperatures, beryllia yielded a higher insulation resistance by a factor of 10.},
doi = {},
url = {https://www.osti.gov/biblio/5339269},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 1981},
month = {Tue Sep 01 00:00:00 EDT 1981}
}