B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
341/38, 342/38
B05B 12/00 (2006.01) G05B 11/10 (2006.01)
Patent
CA 1152614
ABSTRACT OF THE DISCLOSURE A current-to-pressure converter receives an electrical input signal, such as a DC current, which is a function of a sensed parameter and which is indicative of a desired output pressure. An electrical-to-pressure transducer provides an output fluid pressure as a function of an electrical control signal. A function of the output pressure is sensed by a sensor which provides an electrical feedback signal which is a function of such pressure. The feedback signal is compared to a command signal derived from the electrical input signal. When a change in the sensed parameter occurs, the electrical input signal changes, which in turn results in a change in the command signal. The electrical control signal changes, thereby changing the output pressure until the feedback signal has changed sufficiently to return the command signal and feedback signal to a balanced state.
364750
Marks & Clerk
Rosemount Inc.
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