Measuring and testing – Volume or rate of flow – By measuring transit time of tracer or tag
Patent
1990-03-05
1992-06-16
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring transit time of tracer or tag
73195, 7386118, G01F 1712, G01F 166
Patent
active
051216396
ABSTRACT:
A method and apparatus for monitoring the velocity of flow of a fluid, by: causing fluid to flow through a conduit section defining a monitoring region, the conduit section having an interior defining a flow path which is free of any physical obstruction that can significantly influence fluid flow in the monitoring region; propagating a beam of energy across the flow path in the monitoring region in a direction transverse to the flow path, the energy being selected such that the beam is modulated by turbulence occurring in the fluid; detecting the modulated beam at a single location in the monitoring region after the beam has traversed the flow path and generating a single electrical signal representative of the detected modulated beam; and processing the single electrical signal in a manner to provide an indication of the modulation of the beam produced by the turbulence in the fluid.
REFERENCES:
patent: 3680375 (1972-08-01), Joy et al.
patent: 3886794 (1975-06-01), McShane
patent: 4201083 (1980-05-01), Kurita et al.
patent: 4519257 (1985-05-01), Simpkins
patent: 4528857 (1985-07-01), Bruner
Dermer Z. L.
Goldstein Herbert
Westinghouse Electric Corp.
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