Brookfield R/S CPS Rheometer - Manual (Page 16)

Brookfield Engineering Labs., Inc. Page 16 Manual No. M08-218-B0212
V. Measuring Systems
This section covers the various measurement geometries. The following types of measuring
systems are suited for use with the R/S CPS+ Rheometer:
a) cone/plate measuring systems
b) plate/plate measuring systems
Please select a suitable measuring system in the measuring range required for your measurements
(see Appendix A.1).
When measuring cones are used, the shear rate is the same across the whole measuring gap. The
most common cone angles are α=1° and α=2°. The cone is truncated 50μm (0.05 mm) in order
to avoid contact and friction with the bottom measuring plate.
Measuring plates are used when large filler particles occur in the measured substance. Gaps be-
tween 0.3 to 3.0 mm may be used. In this case, the shear rate in the measuring gap is a function
of the radius.
.
R R
h
α
Fig. 5: Measuring Cones and Plates for R/S CPS+ Rheometer
V.1 Inserting and Adjusting the Measuring Elements
The cone/plate and plate/plate measuring systems consist of the fixed bottom plate and the upper
measuring cone or plate that is height-adjustable.
The measuring head has to be lifted to insert the measuring element. Move the height adjust-
ing lever towards the front and the measuring head will go up. Push the coupling sleeve of the
measuring element up. Insert the measuring element (cone or plate) into the coupling. Push the
sleeve of the measuring element coupling down until the measuring element is held tight by the
coupling. Loosen the measuring element’s hexagon socket screw.