Patent ID: 11921022
Assignee: ANTON PAAR GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. 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.