Measuring and testing – Volume or rate of flow – Thermal type
Patent
1975-09-05
1977-03-15
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Thermal type
338 28, G01F 168
Patent
active
040117561
ABSTRACT:
A hot wire anemometer having a body formed of heat resistant metal such as an alloy very high in nickel content. The body supports a probe wire in a moving air stream and is mechanically arranged so that the probe wire is disposed in a V groove in the body, which V groove contains a high temperature ceramic adhesive that partially encompasses the downstream side of the probe wire. Mechanical and electrical connection to the probe wire is achieved through conductive support rods that are constructed of the same high temperature metal, insulation between the body and the conductor rods being provided by a coating of an oxide of the same material which coating is formed in situ. Not only does the oxide coating insulate the conductor rods from the body but mechanically fixes the conductors within the body and maintains its integrity at elevated temperatures to which a hot wire anemometer is typically subjected. A method for forming the anemometer structure which employs conventional machining procedures combined in a novel sequence.
REFERENCES:
patent: 2870305 (1959-01-01), Ling
patent: 2888655 (1959-05-01), Lawler
patent: 2957153 (1960-10-01), Greenberg
patent: 3683692 (1972-08-01), LaFitte
Flow Corporation Bulletin, pp. 1 and 16 (back cover).
Brekke Darrell G.
Goldstein Herbert
Manning John R.
The United States of America as represented by the Administrator
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