Simple measurement of liquid flow characteristics - setting up several shear speeds and measuring pressure differences for individual volume flows

摘要

The method involves first setting up several shear speeds simultaneously in a measurement medium and then measuring pressure differences as individual vol. flows pass through associated measurement sections. The viscosity functions are finally derived from the value pairs of the partial vol. flows and pressure differences. The arrangement consists of one or more measurement cylinders (3), each with an axially movable piston (2) sealed gas tight wrt. the cylinder's inner wall , separating the cylinder into two chambers (4,5) and with a direct or indirect drive (1) and speed measurement arrangement (8). The viscosity is derived by a signal processor. The chambers are connected to a press. difference measurement arrangement (7). USE/ADVANTAGE - Esp. for accurately measuring flow properties of non Newtonian liquids in vessels, containers and pipelines over wide range of shear speeds and independently of flow and press. characteristics.