INSTRUMENT CAPSULE FOR CONTROL OF A SUBMARINE PETROLEUM INSTALLATION

摘要

A fluid proof container houses a number of Bourdon tube pressure gauges which govern the fluid pressure of a control fluid for setting the flow rates of various fluid conduits. A bleed line removes a portion of the gas in the controlled fluid conduits. The gas is passed through a series of heating, pressure reduction and drying to eventually supply both the inert atmosphere in the container and serve as the control fluid.