US 11,921,022 B2 · Method and rheometer for determining the density of an at least flowable, in particular liquid, specimen

Abstract

A method for determining the density of an at least flowable, in particular liquid, specimen with a rheometer, in particular a rotational rheometer, includes providing the rheometer with a first measurement component for receiving the at least flowable, in particular liquid, specimen, and a second measurement component with a known volume to be immersed into the specimen. The first and second measurement components are movable relative to one another. The perpendicular force between the two measurement components is measured after the immersion of the second measurement component into the specimen. The measured perpendicular force corresponds to the buoyancy force acting between the specimen and the second measurement component. The density of the specimen is calculated based on Archimedes' principle by reference to the known volume of the second measurement component and the measured perpendicular force. A rheometer for carrying out the method is also provided.

Claims23

Dependent claims

A method for determining the density of an at least flowable or liquid specimen, the method comprising:

providing a rotational rheometer including a first measurement component for receiving the at least flowable or liquid specimen, and a second measurement component to be immersed into the specimen, the first measurement component and the second measurement component each having a bottom surface, the components being movable relative to one another and the second measurement component having a known volume;
measuring a normal force acting in a direction normal to the rheometer between the bottom surfaces of each of the first and second measurement components after an immersion of the second measurement component into the specimen, the measured normal force corresponding to a buoyancy force acting between the specimen and the second measurement component;
and
calculating the density of the specimen based on Archimedes' principle by reference to the known volume of the second measurement component and to the measured normal force.

1 more element

A rotational rheometer for determining the density of an at least flowable or liquid specimen, the rotational rheometer comprising:

a first measurement component for receiving the specimen and a second measurement component with a known volume, each of said components having a bottom surface, said second measurement component being disposed in said first measurement component for immersion into the specimen, and said first measurement component and said second measurement component being disposed in the rheometer for movement relative to one another;
a normal-force-measurement unit disposed and configured in the rheometer for measuring a force acting in a direction normal to the rheometer and acting on said bottom surface of each of said first and second measurement components before, during and after the immersion of said second measurement component into the specimen, the measured normal force of said immersed second measurement component corresponding to a buoyancy force acting between the specimen and said second measurement component;
and
a control and processing unit configured to calculate the density of the specimen based on Archimedes' principle.

1 more element

Dependencies are inferred from the claim text.

Method and rheometer for determining the density of an at least flowable, in particular liquid, specimen

Life of this patent

Method and rheometer for determining the density of an at least flowable, in particular liquid, specimen

Life of this patent

Abstract

Claims23