Temperature averaging fluid flow measuring apparatus

Details Temperature averaging fluid flow measuring apparatus Temperature averaging fluid flow measuring apparatus

2005-03-29

2005-03-29

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Volume or rate of flow

Thermal type

Reexamination Certificate

active

06871536

ABSTRACT:
A fluid flow measuring method and apparatus with high sensitivity, quick response, and a wide dynamic range measures the flow of a fluid based on a difference in radiation of heat at an upstream side and a downstream side of a heating member located in the flow of the fluid. The apparatus includes a heating member; an upstream temperature sensor located on the upstream side of the heating member for measuring a first temperature; a downstream temperature sensor located on the downstream side of the heating member for measuring a second temperature; and a circuit for controlling power supplied to the heating member to maintain an average temperature of the first temperature measured by the upstream temperature sensor and the second temperature measured by the downstream temperature sensor at a fixed temperature.

REFERENCES:
patent: 4501144 (1985-02-01), Johnson et al.
patent: 5291781 (1994-03-01), Nagata et al.
patent: 5369994 (1994-12-01), Hecht et al.
patent: 5936157 (1999-08-01), Yamashita et al.
patent: 5965811 (1999-10-01), Kawai et al.
patent: 6729183 (2004-05-01), Tanimoto et al.
patent: 5-7659 (1993-01-01), None
Lammerink et al., “A New Class Of Thermal Flow Sensors Using ΔT=0 As A Control Signal”, IEEE, 2000, pp. 525-530.

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