AR-G2/AR 2000ex/AR 1500ex Getting Started Guide Page 21
The AR-G2, AR 2000ex, and AR 1500ex
The AR-G2, AR 2000ex, and AR 1500ex are the world's most advanced combined motor and transducer
(CMT) rheometers. The instruments consist of a main unit and a separate control box containing the
electronics. The interplay between the rheometer main unit and the electronics is described in “Key
Rheometer Components” on page 22.
A schematic of the AR-G2 rheometer is given in the figure below. The AR 2000ex and AR 1500ex are
similar.
Figure 4 The AR-G2 Rheometer (AR 2000ex and AR 1500ex are similar).
Description
The body of the rheometer is a rigid, single-piece metal casting comprising a base and column.
The instrument head is attached to a ball-slide, which is mounted within the column. The vertical position
of the head is controlled by driving the screw of the ball-slide. The head contains the following:
• The drag cup motor, with an armature that forms the rotating spindle of the rheometer.
• An air or magnetic thrust bearing that supports the spindle.
• An optical encoder that determines its angular position.
Each of these components is described in more detail in “Key Rheometer Components” on page 22
.
Motor and bearing
Smart Swap connection
Coolant connections
Normal force transducer
Front panel
Head
Column
Base
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