TA Instruments - ARES-G2

Manufactured by  TA Instruments
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The ARES-G2 is the most advanced rotational rheometer for research and material development.

The ARES-G2 is the most advanced rotational rheometer for research and material development.

The ARES-G2 is the most advanced rotational rheometer for research and material development. It remains the only commercially available rheometer with a dedicated actuator for deformation control, Torque Rebalance Transducer (TRT), and Force Rebalance Transducer (FRT) for independent shear stress and normal stress measurements. It is recognized by the rheological community as the industry standard to which all other rheometer measurements are compared for accuracy.

The ARES-G2 platform offers an array of incomparable features including:

  • Unrivaled data accuracy
  • Unmatched strain and new stress control
  • Fully integrated fast data sampling
  • Separate electronics
  • New Smart Swap™ environmental systems
  • Patented Active Temperature Control
  • Advanced accessories
  • TRIOS Software providing extreme testing flexibility
  • Large Amplitude Oscillatory Shear (LAOS) and Fourier Transform (FT) Rheology Analysis
  • Software package
  • NEW Orthogonal Superposition (OSP) and 2 Dimensional Small Amplitude Oscillatory Shear (2D-SAOS) techniques
  • NEW DMA mode for measurements of solids in bending, tension and compression

There simply is no comparison to any other rheometer

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Documents & Manuals

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Features of ARES-G2

Independent measurements of stress and strain

An accurate mechanical measurement is based on the fundamental assumption of a controlled variable (stimulation) and a measured variable (response). The separation of these key experimental quantities guarantees the greatest accuracy. Moreover, the analytical components dedicated to each task should be optimized to their assigned role. In the case of a modulus measurement, the application of strain and the measurement of stress should be separated, or in the case of a viscosity measurement, the application of strain rate and the measurement of stress are to be decoupled.This is the approach taken by the TA Instruments ARES-G2, leading to measurements free of instrument artifacts over wide ranges of stress, strain, and frequency.

A New Dimension in Dual Head Rheological Testing

ARESTA Instruments introduces a new dimension in rheological testing exclusive to the ARES-G2. Simultaneous deformation in the angular and axial directions unlocks all new capabilities for probing nonlinear and anisotropic behavior of complex fluids. This new testing capability utilizes the unique capabilities of the ARES-G2 FRT to apply oscillation in the axial direction, orthogonal to the direction of angular shear.

Features and Benefits

  • Exclusive to the ARES-G2 rheometer
  • Double gap concentric cylinder
  • OSP and 2D-SAOS experiments fully programmable from TRIOS Software
  • Simultaneous measurements in two directions
  • Advanced Peltier System temperature control
General Specifications

There are no General Specifications available.

Additional Specifications

Force/Torque Rebalance Transducer (Sample Stress)   
Transducer Type    
Force/Torque Rebalance   
Transducer Torque Motor    
Brushless DC   
Transducer Normal/Axial Motor    
Brushless DC   
Minimum Transducer Torquein Oscillation    
0.05 µN.m   
Minimum Transducer Torquein Steady Shear    
0.1 µN.m   
Maximum Transducer Torque    
200 mN.m   
Transducer Torque Resolution    
1 nN.m   
Transducer Normal/Axial Force Range    
0.001 to 20 N   
Transducer Bearing    
Groove Compensated Air   
Drive Motor (Sample Deformation)   
Maximum Motor Torque    
800 mN.m   
Motor Design    
Brushless DC   
Motor Bearing    
Jeweled Air, Sapphire   
Displacement Control/Sensing    
Optical Encoder   
Strain Resolution    
0.04 µrad   
Min. Angular Displacementin Oscillation    
1 µrad   
Max. Angular Displacement in Steady Shear    
Angular Velocity Range    
1 x 10-6 rad/s to 300 rad/s   
Angular Frequency Range    
1 x 10-7 rad/s to 628 rad/s   
Step Change in Velocity    
5 ms   
Step Change in Strain    
10 ms   
Orthogonal Superposition and DMA modes   
Minimum Transducer Force in Oscillation    
0.001 N   
Maximum Transducer Force    
20 N   
Minimum Displacement in Oscillation    
0.5 µm   
Maximum Displacement in Oscillation    
50 µm   
Displacement Resolution    
10 nm   
Axial Frequency range    
1 x 10-5 Hz to 16 Hz   
Stepper Motor   
Micro-stepping Motor/Precision Lead Screw   
Position Measurement    
Linear Optical Encoder   
Positioning Accuracy    
0.1 micron   
Temperature Systems   
Smart Swap    
Forced Convection Oven, FCO    
-150 °C to 600 °C   
FCO Camera Viewer    
Advanced Peltier System, APS    
-10 °C to 150 °C   
Peltier Plate    
-40 °C to 180 °C   
Sealed Bath    
-10 °C to 150 °C

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