Patent ID: 6826964
Filing Date: 2004-12-07
Classification: G01N

Abstract:
A flow meter for continuous measuring properties of at least one fraction included in a flowing fluid composition comprising at least two different components flowing through a duct or channel which meter (1) comprisesat least one sensor (2,3) designed as waveguide through which the fluid composition (10) flows, at least one electronic unit (A) comprising a transmitting means (5) adapted to transmit an electric signal (6) into the fluid composition (10) at least one receiving means (8) adapted signal (9) by means of a receiving probe (11) the sensor (2,3), and at least one signal processor (12) adapted to deduce values (13) specific to the properties of the fluid from the received signal (9), characterised in that the sensor(s) (2,3) are in the shape of a resonator(s) and are designed to fit into an annular space (14) between one external tube (15) and an internal core (16) arranged therein, so that at least a portion of the fluid composition (10) flows through the sensor (2,3), and that the sensor(s) comprises at least one cylindrical sector made of thin walled, electrically conducting material and with a cross section shaped as a semi-sector (2,3) having dimensions which preferably allows one or more sensors to be arranged adjacent to each other or separated from each other within the annular space (14).