Measuring and testing – Volume or rate of flow – Thermal type
Patent
1983-05-16
1985-03-12
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Thermal type
G01F 168
Patent
active
045037060
ABSTRACT:
A constant temperature anemometer wherein a bridge circuit having four legs includes a sensor in one leg and resistances in the other legs. The resistance of two of the legs is formed, at least in part, by a potentiometer which allows a simultaneous adjustment of the resistance of those legs and, accordingly, the ratio of those resistances. The potentiometer may be selectively connected within the bridge circuit or, alternatively, with other circuitry to determine the operating resistance of the sensor.
REFERENCES:
patent: 2389615 (1945-11-01), Eder
patent: 2591195 (1952-04-01), Picciano
patent: 2720108 (1955-10-01), Johnson
patent: 3085431 (1963-04-01), Yerman et al.
patent: 4164862 (1979-08-01), Jackson
patent: 4214478 (1980-07-01), Lauterbach
DISA Information dated May 1971, p. 38 entitled "New Improvements in Anemometry Instruments".
DISA Information dated May 1971, p. 39, entitled "Description of the Individual Units".
DISA Information dated May 1971, p. 42, entitled "Improvements in Frequency Response".
Journal of Fluids Engineering, Dec. 1976, entitled "A Simple Linearized Hot-Wire Anemometer", pp. 749-752.
Department of Civil Engineering, Colorado State University entitled "A Dual-Amplifier Hot-Wire Anemometer".
von Karman Institute for Fluid Dynamics entitled "Theory and Design of a Constant Temperature Linearized Hot Wire Anemometer" dated Oct. 1974.
Department of Aerospace Engineering Sciences, University of Colorado, paper entitled "Analysis of a New Hot-Wire Anemometer with Shaped Bridge Impedance", 1982.
Department of Aerospace Engineering Sciences, University of Colorado entitled "Off-Optimum Operation of Constant Temperature Hot-Wire Anemometers" dated, 1982.
Goldstein Herbert
Kolodjski Kenneth J.
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