Patent ID: 6708554
Filing Date: 2004-03-23
Classification: G01N

Abstract:
A rotational rheometer having circulating gas for temperature-control of a sample material during measurements of rheological values thereof, the rheometer comprising:a support; a substantially cylindrical outer housing seating on said support; a measuring container inserted into said outer housing in a substantially coaxial manner to define a radial annular space between said outer housing and said measuring container, the measuring container having a measuring chamber for receiving the sample material; a circulating device disposed within said outer housing, said circulating device for circulating the gas through said annular space to temperature-Control an outside of said measuring container and the sample material contained therein; and a cylindrical guiding wall disposed within said annular space at a separation from and coaxially to said outer housing to subdivide said annular space into an inner annular chamber and an outer annular chamber, wherein said outer annular chamber and said inner annular chamber communicate via at least one opening in said guiding wall.