Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1988-08-17
1990-06-05
Orsino, Joseph A.
Communications: electrical
Condition responsive indicating system
Specific condition
340583, 340604, 250573, 250574, 250577, 73DIG11, 73 611R, 73 53, 356437, G08B 2100
Patent
active
049317741
ABSTRACT:
An apparatus for detecting a liquid-vapor change of phase in a fluid substance traveling through a conduit comprises a detector housing providing a path of travel for fluid and interposed in a portion of the fluid-carrying conduit in which the change of phase is to be detected, a source of radiation disposed for directing radiation into the path of travel and a detector for detecting radiation disposed generally at an opposite side of the path of travel from the said source. The arrangement is such that radiation from the source will pass through the fluid in the path of travel prior to reaching the detector. The detector is responsive to radiation detected thereat for producing a corresponding electrical signal. A detector circuit is responsive to the electrical signal produced by said detector for producing an output signal indicative of a liquid-vapor change of phase of the fluid in the conduit.
REFERENCES:
patent: 3544798 (1968-04-01), Topol
patent: 4212005 (1980-07-01), Hubert
patent: 4251809 (1981-02-01), Cheney
patent: 4631529 (1986-12-01), Zeitz
patent: 4816695 (1989-03-01), Lavin
Bushnell Richard
Dickey-john Corporation
Negash Kinfe-Michael
Orsino Joseph A.
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