Two-wire i/p converter with energy storage

Details Two-wire i/p converter with energy storage Two-wire i/p converter with energy storage

G - Physics

05

D

342/12

G05D 16/20 (2006.01)

Patent

CA 1335116

A pneumatic regulator in the form of an electro-pneumatic device (an I/P regulator) in which the pressure of pneumatic medium is controlled in response to an electrical signal in which the pneumatic pressure regulator incorporates a control volume whose pressure is used to regulate the main pneumatic pressure and the pressure in the control volume being under the control of pneumatic valves, the valves being opened and closed by electrical signals provided by an electrical circuit, which circuit incorporates electrical storage so as to permit the electrical circuitry to operate the valve on currents in the range 4-20 mA so that the electro-pneumatic regulator can be operated directly by electronic control systems without the need of supplementary electrical feeds.

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