Patent ID: 7415892
Filing Date: 2008-08-26
Classification: G01F

Abstract:
1. An electro-magnetic flow sensor for measuring a flow rate of liquid, comprising: a micro controller; and a liquid flowing apparatus, which is communicatively linking to said micro controller, comprising: a flow chamber housing having a flow chamber for receiving the liquid therein; a magnetic source communicating with said flow chamber housing for generating a stable, single strength magnetic field within said flow chamber so as to allow said liquid exposing in said magnetic field; and an array of electrodes alignedly integrated with said flow chamber housing, said electrodes arranged in adjacent pairs spaced apart along a length of said flow chamber housing so that each electrode pair has opposing ends in contact with said flowing liquid to define an axial distance normal to said magnetic field and said flowing liquid and said spacing of said electrode pairs causes said magnetic field to induce in each electrode pair substantially the same voltage magnitude generated in said flow chamber when said liquid flows within said flow chamber under said magnetic field, wherein multiple voltage magnitudes of said electrode pairs are summed, said micro controller reads said summed voltage magnitude and converts said summed voltage magnitude into said flow data of said liquid.