Method and apparatus for assessing and quantifying pulsation ind

Details Method and apparatus for assessing and quantifying pulsation ind Method and apparatus for assessing and quantifying pulsation ind

1993-07-15

1996-01-09

Chilcot, Jr., Richard E.

Measuring and testing

Volume or rate of flow

With indirect temperature or density compensation

7386101, 36457101, G01F 100

Patent

active

054819245

ABSTRACT:
A method and apparatus for identifying, quantifying and correcting turbine meter errors related to pulsation effects in a gas stream being measured. A turbine meter pulse rate output signal is monitored and abnormal pulse rate modulations in the signal are detected and used to indicate turbine meter measurement errors. The equation used to determine turbine error requires measurements of pulsation intensity over a desired frequency range. Because of the difficulty in measuring pulsation intensity at field sites, meter error is determined directly from rotor speed modulation data. Rotor speed modulation data is obtained and then quantitatively related to pulsation intensity using a rotor response model. Thus, meter error is determined directly from rotor speed modulation data, allowing on-site quantification and correction of errors.

REFERENCES:
patent: 4864869 (1989-09-01), Glasheen

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