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Title: Regulator Sensitivity With Stability Or Instability - Cause And Correction??
Author: J. m. Kruse
Source: 1984 Appalachian Gas Measurement Short Course
Year Published: 1984
Abstract: Prior to discussing regulator sensitivity with stability or instability, lets first define a pressure regulator. A pressure regulator Is an automatic device which controls the media flow and maintains a desired media pressure while reducing the media supply pressure. The basic regulator device to perform its design function consists of three basic elements. The first is the restrictive element which can be a single, double, or multi ported variable opening. The second is the responsive element by which a throttling device is activated and controlled. The responsive element usually takes the form of a flexible diaphragm however, it can be a piston or other device which can readily respond to pressure changes. The third element of the pressure regulator is the standard. The standard element governs the control pressure setting and opposes the force exerted by the pressure being controlled. Any change in the balance of these forces results in a movement of the responsive element or diaphragm which in turn affects the movement of the throttling device. The standard also can be of several forms. The type standard utilized will depend on the application and the desired performance. The standard can basically be a spnng, pressure or weight type - either direct or by lever. The latter type is basically becoming obsolete.

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