Patent ID: 6996485

Claim:
A method of correcting a calibration curve of a meter used to measure fuel in a fuel dispenser, comprising the steps of: (a) receiving a meter calibration curve used to determine flow rate or volume of liquid passing through the meter expressed in a finite number of data points; (b) determining the location of a plurality of poles on said meter calibration curve by determining an expected value on said meter calibration curve for a plurality of flow rates or volumes of liquid flowing through the meter; (c) computing error in said meter calibration curve at the location of said plurality of poles by determining the difference between the flow rate or volume of liquid indicated by said meter calibration curve at the location of said plurality of poles and said plurality of flow rates or volumes for said plurality of poles; (d) computing an error correction for said meter calibration curve at each of said plurality of poles based on said computed error in said step (c); and (e) correcting said meter calibration curve to form a corrected curve by applying said error correction to said meter calibration curve at the location of said plurality of poles and using linear interpolation to correct said meter calibration curve at points adjacent said plurality of poles.