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Title: Differential capacitance probe for process control involving aqueous dielectric fluids

Abstract

A differential capacitance probe device for process control involving aqueous dielectric fluids is disclosed. The device contains a pair of matched capacitor probes configured in parallel, one immersed in a sealed container of reference fluid, and the other immersed in the process fluid. The sealed container holding the reference fluid is also immersed in the process fluid, hence both probes are operated at the same temperature. Signal conditioning measures the difference in capacitance between the reference probe and the process probe. The resulting signal is a control error signal that can be used to control the process.

Inventors:
;
Issue Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1245991
Patent Number(s):
6,462,562
Application Number:
09/723,541
Assignee:
Bechtel BWXT Idaho, LLC (Idaho Falls, ID) INL
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Resource Relation:
Patent File Date: 2000 Nov 28
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 47 OTHER INSTRUMENTATION

Citation Formats

Svoboda, John M., and Morrison, John L. Differential capacitance probe for process control involving aqueous dielectric fluids. United States: N. p., 2002. Web.
Svoboda, John M., & Morrison, John L. Differential capacitance probe for process control involving aqueous dielectric fluids. United States.
Svoboda, John M., and Morrison, John L. Tue . "Differential capacitance probe for process control involving aqueous dielectric fluids". United States. https://www.osti.gov/servlets/purl/1245991.
@article{osti_1245991,
title = {Differential capacitance probe for process control involving aqueous dielectric fluids},
author = {Svoboda, John M. and Morrison, John L.},
abstractNote = {A differential capacitance probe device for process control involving aqueous dielectric fluids is disclosed. The device contains a pair of matched capacitor probes configured in parallel, one immersed in a sealed container of reference fluid, and the other immersed in the process fluid. The sealed container holding the reference fluid is also immersed in the process fluid, hence both probes are operated at the same temperature. Signal conditioning measures the difference in capacitance between the reference probe and the process probe. The resulting signal is a control error signal that can be used to control the process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {10}
}

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