Pneumatic differential pressure controller

Details Pneumatic differential pressure controller Pneumatic differential pressure controller

1985-09-16

1987-01-20

Wayner, William E.

Automatic temperature and humidity regulation

Ventilator type

236 87, F24F 700

Patent

active

046375465

ABSTRACT:
A differential pressure controller includes means for controllably metering a flow of air therethrough to an external control device, the metering means including a valving member and a nozzle coacting with the member for metering the flow of air. Also included in a plurality of diaphragms coacting with the valving member and defining a first chamber for receiving a first pressure signal and a second chamber for receiving a second pressure signal. One of the pressure signals includes a component representative of a master control signal. Metering of the flow of air is in response to a pressure difference between the first pressure signal and the second pressure signal.

REFERENCES:
patent: 3806027 (1974-04-01), Ginn et al.
patent: 4182486 (1980-01-01), Mott
patent: 4467956 (1984-08-01), Kreuter

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