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Catalogue excerpts

New Castle, DE USA Lindon, UT USA Elstree, United Kingdom Shanghai, China Beijing, China Taipei, Taiwan Tokyo, Japan Seoul, South Korea Bangalore, India Paris, France Eschborn, Germany Brussels, Belgium Etten-Leur, Netherlands Sollentuna, Sweden Milano, Italy Barcelona, Spain Melbourne, Australia Mexico City, Mexico

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ARES-G2 Rheometer Technology Temperature Systems Accessories

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The only Rheometer to independently measure stress and strain The ARES-G2 is the most advanced rheometer for research and material development. It is the only rheometer with dual-head, or separate motor and transducer, technology for the PUREST rheological measurements. No other rheometer is capable of measuring stress independently of the applied shear deformation. It is recognized by the rheological community as the industry standard to which all other measurements are compared for accuracy. The ARES-G2 platform offers an array of new features including unrivaled data accuracy, unmatched strain...

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SPECIFICATIONS Force/Torque Rebalance Transducer (Sample Stress) Transducer Type Transducer Torque Motor Transducer Normal/Axial Motor Minimum Transducer Torque in Oscillation Minimum Transducer Torque in Steady Shear Maximum Transducer Torque Transducer Torque Resolution Transducer Normal/Axial Force Range Transducer Bearing Force/Torque Rebalance Brushless DC Brushless DC 0.05 μN.m 0.1 μN.m 200 mN.m 1 nN.m 0.001 to 20 N Groove Compensated Air Separate Motor (Sample Deformation) Maximum Motor Torque Motor Design Motor Bearing Displacement Control/Sensing Strain Resolution Min. Angular Displacement...

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ARES-G2 TECHNOLOGY Only ARES-G2 provides independent measurements of stress and strain rate When it comes to making the most accurate rheological measurements, two heads are simply better than one! Consider that the rheological behavior of materials is described by material functions such as the modulus or viscosity. Modulus is the ratio of stress to strain and viscosity is the ratio of stress to strain rate. In order for a rheometer to make the purest and most accurate rheological measurements, it is best to measure the fundamental parameters of stress and strain or strain rate independently....

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ARES-G2 Dual-Head Rheometer Design Advantage At the heart of the ARES-G2 rheometer is a new advanced motor and transducer. The ARES-G2 FRT Transducer directly measures torque and normal force from the current required to drive rotational and linear motors to maintain zero position. New features of the FRT include a dynamic torque range of 5,000,000 to 1, a more robust air bearing, a patented higher resolution capacitive angle sensor (patent #’s 7,075,317 and 7,135,874), and new patented non-contact temperature sensing technology (patent # 6,931,915. The independent torque measurement eliminates...

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Frame, Vertical Movement, and Alignment The ARES-G2 frame and vertical movement assembly is built to deliver maximum stiffness, low axial compliance (0.1 μm/N), and the most accurate geometry positioning and alignment. Optical Encoder Lead Screw • The steel frame provides high strength, optimum damping for high frequency testing, and dimensional stability over a wide temperature range. • The transducer mount is held rigidly against the frame by two hardened steel cross roller slides. Duplex Bearing • The slides deliver smooth vertical movement of the head while maintaining concentricity and parallelism....

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High-Speed Electronics and Data Processing The ARES-G2 is equipped with new high-speed electronics with digital signal processing for transducer measurements and motor control. While many manufacturers cut costs by combining the test station and electronics into a single box, the separate electronics approach of TA Instruments ARES-G2 isolates the precision measurements from heat and vibration. This approach ensures the best sensitivity and data quality from the test station. The electronics enable fully integrated high speed data acquisition for transient (up to 8,000Hz) and oscillation (up to...

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Forced Convection Oven (FCO) The FCO is an Air/N2 gas convection oven, designed for optimum temperature stability, extremely rapid heating and cooling, and ease-of-use over the temperature range of -150 to 600°C. The maximum controlled heating rate is 60°C/min. Obtaining the -150°C minimum temperature requires an optional liquid nitrogen-cooling device. The FCO, used primarily for polymer melts, thermosetting polymers, and solid polymers, provides superior temperature stability through the use of twin element heaters, which produce counter rotating airflow into the oven chamber. The FCO can be...

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New Advanced Peltier Plate, APS The APS is a Smart Swap™ Peltier temperature controlled environmental system with a temperature range of -10 to 150°C, with a maximum heating rate of 20°C/min and a temperature accuracy of +/- 0.1°C. Unlike other Peltier temperature systems, the APS features parallel plate (cone and plate) as well as DIN conforming concentric cylinder geometries to meet the most demanding applications. The new quick-change lower plate comes standard with a 60 mm diameter hardened chromium surface and a unique bayonet fixture that allows the user to quickly and easily adapt the plate...

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Dielectric Thermal Analysis Accessory, DETA The ARES-G2 DETA is an accessory which expands the testing capability of the ARES-G2 rheometer to measure the electric response of materials through probing the capacitive and conductive properties. The DETA accessory is easily installed or removed from the ARES-G2 rheometer. The ARES-G2 platform provides flexible and easy experimental setup and superior DETA data accuracy through standard features, such as the Forced Convection Oven for temperature control to 350°C, axial force control to 20 N with gap temperature compensation capability, and TRIOS...

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Electrorheology Accessory, ER ER fluids are suspensions of extremely fine non-conducting particles in an electrically insulating fluid, which show dramatic and reversible rheological changes when the electric field is applied. The ARES-G2 ER accessory provides the ability to apply up to 4,000 volts during the course of an experiment using either parallel plate or concentric cylinder geometry. The voltage is applied to the sample via a Trek Amplifier through a high voltage cable. An insulator block between the transducer hub and the upper geometry isolates it from the circuit. Tests can be run...

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