FUEL DISPENSER FLOW METER HAVING VAPOR PRESSURE CORRECTION ARRANGEMENT

摘要

A method and apparatus for improving the accuracy of fuel flow meters by compensating for the presence of vapor bubbles generated within the flow meter. The method comprises measuring the temperature of the fuel flowing through the meter and using an algorithm or static lookup table to determine a vapor compensation factor based on that temperature. Because the tendency of fuel to vaporize depends largely on seasonal variations in fuel temperature, applying a temperature-dependent vapor compensation factor promotes year-round accuracy of the flow meter output.

主权项

1. A method of measuring the flow rate of fuel in a fuel dispenser, comprising:
providing a fuel flow meter that measures the flow rate of fuel through the meter; measuring the temperature of the fuel using a temperature sensor; and converting the measured flow rate to a corrected flow rate by applying a vapor compensation factor determined using temperature data from the temperature sensor.