On-line gas measurement and analysis system
AssigneeElectronic Associates, Inc.
InventorsWayne Wilson, George Rosko, James R. Patmore
Life of this patent
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Abstract
A system for measuring on-line the energy content and flow of a gas mixture within a pipeline. The system includes a gas chromatograph for producing a time varying signal related to the component composition of the gas mixture. The pressure and temperature of the gas mixture is measured and these signals as well as the time varying signal from the chromatograph are converted to digital form. These signals are applied to control means which produces energy and flow rate signals of the gas mixture in the pipeline based on the on-line pressure, temperature and component composition. These signals are corrected by supercompressibility factor signals as a function of component composition.
Claims14
A system for measuring on line the total energy and total fluid flow of a gas mixture within a pipeline having widely varying component compositions and widely varying flow rates copmrising:
- gas chromatograph means for producing time varying signals related to the component compositions of the gas mixture within the pipeline,
- programmable gain means coupled to said gas chromatograph means having a plurality of gain ranges, said programmable gain means having comparative means for selecting a gain range for optimum resolution and for producing a related gain range signal,
- means for converting to digital form the output of said programmable gain means,
- transducer means for measuring the pressure and temperature of said gas mixture within the pipeline, and
- control means coupled to said transducer means, said converting means and said gain range means for producing energy and flow rate signals of the gas mixture in the pipeline based on the on-line pressure, temperature, and component gas composition within a range related to the gain range signals.
Dependencies are inferred from the claim text.