Control device for fluid flow

Details Control device for fluid flow Control device for fluid flow

1988-07-26

1990-08-21

Lall, Parshotam S.

Boots, shoes, and leggings

36457101, 7386102, 73195, 340606, G01F 100, G06F 1520

Patent

active

049512242

ABSTRACT:
An apparatus for controlling the fluid flow rate through a fluid transmission conduit is disclosed. A first set of resistors and a second set of resistors are connected in full bridge fashion and placed in contact with a separate measurement conduit in fluid communication with the fluid transmission conduit. A signal from the measurement conduit proportional to the fluid flow rate therein is sent to a computer. The computer is operative to actuate a control valve in response to the signal. The control valve is disposed upstream from the measurement conduit inlet in the fluid transmission conduit. The computer is also enabled to perform an autocalibration routine of the flow control apparatus that a yields a control accuracy of better than 1 percent.

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patent: 4651286 (1987-03-01), Fukai et al.
patent: 4679151 (1987-07-01), Morris et al.
patent: 4725964 (1988-02-01), Lloyd et al.

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