公开(公告)号：US20230266219A1

公开(公告)日：2023-08-24

申请号：US17678825

申请日：2022-02-23

申请人： Carlo Dessy

发明人： Carlo Dessy

IPC分类号： G01N11/04

CPC分类号： G01N11/04 ,  G01N2011/0093

摘要： A capillary viscometer is disclosed for measuring the relative viscosity of a solute in a solvent. The capillary viscometer consists of a single fluid flow circuit having a measuring capillary and a thermal flow sensor connected in series for in-situ velocity measurement. Relative viscosity is determined by measuring the flow velocity ratio of pure solvent compared to that of a sample. Two different differential viscometers are also disclosed. The first differential viscometer has two fluid flow circuits with one of the circuits also having a large volume vessel to allow for sample dilution. Another configuration of the differential viscometer is disclosed where four fluid flow circuits are configured in a Wheatstone bridge configuration.