Temperature measurement

Details Temperature measurement Temperature measurement

1988-07-18

1989-10-24

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

Temperature or pressure measurement

374117, G21C 1702, G01K 1124

Patent

active

048760595

ABSTRACT:
A method and apparatus for measuring temperature at different localized zones within a fluid medium, for example parts of the tops of fuel sub-assemblies in a reactor core, in which a continuous stress wave signal is transmitted from a remote location to targets at the zones, the frequency of the transmitted signal is progressively changed, waves reflected from the targets are received and multiplied with a reference signal, whose frequency changes at the same rate as the transmitted signal, to produce output signals wich are analyzed to derive values for the temperatures at points between the targets. A transmitter 10, target 12, receiver 14 are arranged so that oscillator 24 sweeps the transmitted signal and provides the reference signal to detector 28 which multiplies the received and reference signals and the beat frequency output signals from different targets are fed to a computer 38 for analysis.

REFERENCES:
patent: 4481517 (1984-11-01), Brown
patent: 4655992 (1987-04-01), McKnight et al.

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