Nullification of measurement error, particularly within a dual turbine flow meter used in a fuel dispenser
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United States of America Patent
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Feb 7, 2006
Grant Date -
Dec 22, 2005
app pub date -
Sep 30, 2004
filing date -
Jun 18, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method for correcting a meter calibration curve in a fuel dispenser. The meter may be a turbine flow meter. A meter calibration curve is expressed in a finite number of data points. The meter calibration curve is used to determine the volume and/or flow rate of liquid flowing through the meter. Since the meter calibration curve may contain errors, the meter calibration curve is corrected by determining poles in the meter calibration curve for given known flow rates and/or volumes of liquid passing through the meter, determining an error correction at each of the poles in the meter calibration curve, correcting the expanded meter calibration curve at each of the poles, using linear interpolation to correct points in the meter calibration curve adjacent to the poles.
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