Patent ID: 6983214
Filing Date: 2006-01-03
Classification: G01F

Abstract:
1. A method of measuring a flow rate of fluid by: moving the fluid within a fluid flow path, measuring an electrical output corresponding to the flow rate of the fluid within the flow path by utilizing an electrical circuit having a thermal type flow sensor disposed in the fluid flow path and by measuring heat absorption of the fluid with the thermal type flow sensor, measuring a temperature of the fluid, converting a value of the electrical output to a value of the flow-rate by utilizing a plurality of predetermined calibration curves T indicating a relationship between the electrical output of the electrical circuit and the flow rate of the fluid at a plurality of discrete temperature values t achieving a corrected flow rate value F wherein the interpolation calculation is carried out on the basis of a value of the measured electrical output and a measured temperature value t by using the calibration curves T wherein m is an integer smaller than j−1, electrical output values E and to achieve the corrected flow rate value F