Density and viscosity sensor

Details Density and viscosity sensor Density and viscosity sensor

2011-01-25

2011-01-25

Fitzgerald, John (Department: 2856)

Measuring and testing

Specific gravity or density of liquid or solid

C073S054260

Reexamination Certificate

active

07874199

ABSTRACT:
A density and viscosity sensor for measuring density and viscosity of a fluid, and method for measuring, are presented herein. The sensor comprises a resonating element, and actuating/detecting element, a connector and a housing. The actuating/detecting element is positioned within a chamber defined by the housing so as to be isolated from the fluid. The resonating element is arranged to be immersed in the fluid, and has a shape defining a first resonance mode and a second resonance mode characterized by different resonance frequencies and different quality factors. The first resonance mode is adapted to move a volume of fluid, and the second resonance mode is adapted to shear a surrounding fluid.

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