Fluid flow rate measuring circuit

Details Fluid flow rate measuring circuit Fluid flow rate measuring circuit

1996-04-12

1998-03-17

Dougherty, Elizabeth L.

Measuring and testing

Volume or rate of flow

Using rotating member with particular electrical output or...

72 8687, H01B 100

Patent

active

057289492

ABSTRACT:
A turbine wheel flow measuring transducer is provided for measuring low flow rates of corrosive fluids, whether fluids or gases. The transducer has a turbine wheel rotating in a housing fluid chamber at a rate set by the corrosive fluid flowing through the housing. Infrared light passing through the fluid is sensed and converted by an optical flow measurement circuit. The amount of light which passes through a rotating turbine wheel indicates flow rate. A processing circuit forms output signals indicative of fluid flow rate.

REFERENCES:
patent: 3729996 (1973-05-01), Metz
patent: 4172381 (1979-10-01), Aigner
patent: 4173144 (1979-11-01), Pounder
patent: 4432244 (1984-02-01), Kataoka et al.
patent: 4467660 (1984-08-01), McMillan, Jr.
patent: 4969365 (1990-11-01), Strigard et al.
patent: 5307686 (1994-05-01), Noren
patent: 5542302 (1996-08-01), McMillan et al.

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