Patent ID: 6807857
Filing Date: 2004-10-26
Classification: G01N

Abstract:
A method for determining the density of a flowing fluid comprising the steps of:a) passing a fluid upwards or downwards through a first pressure assessment zone; b) measuring the pressure of the fluid as it passes over at least one pair of pressure sensing points in the first pressure assessment zone, the pressure sensing points being placed a distance apart; c) passing the fluid through a second pressure assessment zone the fluid flow direction through the second pressure assessment zone is in the opposite direction of that used in step a); d) measuring the pressure of the fluid as it passes over at least one pair of pressure sensing points in the second pressure assessment zone, the pressure sensing points being placed a distance apart and wherein the fluid passing over the pressure sensing points in the first and second pressure assessment zones has structured fluid flow; and, e) using pressure readings from the first and second pressure assessment zones to calculate the density of the fluid.