DocumentCode
3476239
Title
High-precision capacitance bridge for dielectric-constant gas thermometry
Author
Fellmuth, B. ; Bothe, H. ; Haft, N. ; Melcher, J.
Author_Institution
Phys.-Tech. Bundesanstalt (PTB), Berlin, Germany
fYear
2010
fDate
13-18 June 2010
Firstpage
101
Lastpage
102
Abstract
This paper describes a high-resolution and high-precision autotransformer ratio capacitance bridge that has been built and tested at PTB for dielectric-constant gas thermometry (DCGT). Its main component is a home-made high-precision 1:1 inductive voltage divider (IVD) used in a autotransformer configuration. Special emphasis is given to the estimation of the uncertainty of the determination of small capacitance changes considering correlations.
Keywords
autotransformers; bridge circuits; permittivity; thermometers; voltage dividers; dielectric-constant gas thermometry; high-precision autotransformer ratio capacitance bridge; high-resolution autotransformer ratio capacitance bridge; home-made high-precision 1:1 inductive voltage divider; Bridge circuits; Capacitance measurement; Dielectric constant; Dielectric measurements; Equations; Helium; Kelvin; Magnetic cores; Temperature; Uncertainty;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements (CPEM), 2010 Conference on
Conference_Location
Daejeon
Print_ISBN
978-1-4244-6795-2
Type
conf
DOI
10.1109/CPEM.2010.5544248
Filename
5544248
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