Patent ID: 8569702
Filing Date: 2013-10-29
Classification: G01F,G01N

Abstract:
1. An apparatus for measuring flow of a fluid mixture in a conduit, comprising: at least one light source for transmitting light into the fluid mixture; first and second optical sensors disposed along the conduit and configured to detect light interactions with the fluid mixture, wherein the first optical sensor is separated by a distance in a direction of flow through the conduit from the second optical sensor, wherein the light interactions detected by the optical sensors are a measure of reflectance of the light transmitted into the fluid mixture, and wherein the light source is on a same side of the conduit as the first and second optical sensors; and a processor coupled to receive first and second time-varying signals of the light interactions from the first and second optical sensors, respectively, wherein the processor is configured with logic to determine phase velocity of at least one phase within the fluid mixture.