Patent ID: 6428488
Filing Date: 2002-08-06
Classification: A61B,G01N

Abstract:
An apparatus for effecting the viscosity measurement of Newtonian and non-Newtonian fluids over a range of shear rates, said apparatus comprising:a pair of tubes having respective ends coupled to a source of Newtonian or non-Newtonian fluid, each of said tubes comprising a respective capillary tube and wherein said capillary tubes have different lengths; a respective valve in each of said tubes for controlling the fluid flow from the fluid source; an analyzer, coupled to said valves, for controlling said valves to permit the flow of fluid into said pair of tubes whereupon the fluid in each of said pair of tubes assumes the same initial position with respect to a reference position, said analyzer being arranged for operating said valves so that the position of said fluid in each of said tubes changes away from said same initial position, said analyzer including a sensor for monitoring the fluid position change in each of said tubes thereby and calculating the viscosity of the fluid based thereon.