Fluid handling – Processes – Involving pressure control
Patent
1991-10-18
1993-11-02
Hepperle, Stephen M.
Fluid handling
Processes
Involving pressure control
73 4R, 137102, 137341, G05D 1620
Patent
active
052576400
ABSTRACT:
A system for precisely controlling gas under high pressure produces an initial gas pressure in a pressure chamber while applying a predetermined amount of power to a heating element located in the pressure chamber and then applies a computed change of power to produce an average gas temperature increase or decrease in the pressure chamber and thereby rapidly produce an increase or decrease in gas pressure with resolution limited by the resolution of measurement of gas pressure in the pressure chamber and the application of the computed change of power. The described invention is particularly advantageous at gas pressure above roughly 1000 pounds per square inch.
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