Electrochemical oxygen sensor for measurement of oxygen in liquid sodium
Journal Article
·
· Nucl. Technol.; (United States)
OSTI ID:6670297
The results obtained from approximately 4000 h of operation of an electrochemical oxygen meter developed at General Electric Company for measuring oxygen activities in liquid sodium are described. In the present design, a small ceramic cup (ThO/sub 2/ with 7 to 8 wt % Y/sub 2/O/sub 3/) has been brazed to a metal tube that is inserted into the liquid sodium via a standard sodium flange. The reference electrode used in the present design consists of In/In/sub 2/O/sub 3/. Several meters were tested in a flowing sodium system, where the oxygen concentrations were controlled by a cold trap. At 500/sup 0/C, the oxygen electromotive force (emf) output can be expressed as emf/sub (V)/ = 0.269 + (160/T) (+-0.003 V), where T is the cold-trap temperature in K. The temperature coefficient of the meters can be expressed as (dE/dT) = 0.51 +- (0.02) mV//sup 0/C.
- Research Organization:
- General Electric Co., San Jose, CA
- OSTI ID:
- 6670297
- Journal Information:
- Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 39:2; ISSN NUTYB
- Country of Publication:
- United States
- Language:
- English
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21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
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440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ALKALI METALS
BREEDER REACTORS
DESIGN
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
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FAST REACTORS
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LMFBR TYPE REACTORS
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SODIUM
210500* -- Power Reactors
Breeding
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ALKALI METALS
BREEDER REACTORS
DESIGN
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FLUIDS
IMPURITIES
LIQUID METAL COOLED REACTORS
LIQUID METALS
LIQUIDS
LMFBR TYPE REACTORS
MEASURING INSTRUMENTS
METALS
OXYGEN METERS
PERFORMANCE
REACTORS
SODIUM