A rotational rheometer, also known as a shear rheometer, is an instrument used to determine how a liquid or slurry flows. Rotational rheometers can measure viscosity, thixotropy, shear stress, and shear strain. Used is the plastics, petroleum, cosmetic, food, and pharmaceutical industries, rotational rheometers help to maintain parameters such as consistency and fluidity, which in turn allow predictions to be made about stability, texture, and shelf life. Rotational rheometers apply a known force to the sample and measure how it reacts to the force and the force the sample then exerts on the rheometer.
Features that can vary between rotational rheometers include viscosity ranges measured, whether or not there is a built in temperature probe, and the user friendliness of the controls and read out screen.
Discover and compare Rotational Rheometers:
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| Company | TA Instruments – a division of Waters Corporation | TA Instruments – a division of Waters Corporation |
| Item | Rubber Processing Analyzer RPA Flex and RPA Elite | TA Instuments Moving Die Rheometer |
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| Catalog Number | RPA Flex / RPA Elite | MDR One |
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| Description | Virtually every aspect of a rubber material’s processing and performance characteristics is influenced by its rheological properties. TA Instruments provides a complete range of rotorless shear rheometers and curemeters to help you optimize processing, curing, and application performance. All TA Virtually every aspect of a rubber material’s processing and performance characteristics is influenced by its rheological properties. TA Instruments provides a complete range of rotorless shear rheometers and curemeters to help you optimize processing, curing, and application performance. All TA Instruments rubber rheometers are manufactured to exacting mechanical standards and with the latest measurement technology for the most accurate, reliable, and reproducible data available. Available automation systems allow for maximum unattended laboratory productivity in all test environments. Relevant ASTM, DIN, and ISO standards are easily met, as are demands for advanced testing, making these instruments the ideal choice for quality control, analytical, and research needs.... Read More | The MDR one Moving Die Rheometer (MDR) is a reliable, accurate, and easy-to-operate rotorless curemeter perfect for routine and standards-driven testing of rubber curing. The MDR one is configured for measuring curing profiles of rubber compounds under isothermal and non-isothermal test conditions The MDR one Moving Die Rheometer (MDR) is a reliable, accurate, and easy-to-operate rotorless curemeter perfect for routine and standards-driven testing of rubber curing. The MDR one is configured for measuring curing profiles of rubber compounds under isothermal and non-isothermal test conditions at constant strain and frequency.The MDR one employs sealed biconical dies meeting all relevant ASTM, ISO, and DIN standards.The unique design includes an ultra-rigid test frame, direct drive motor, precision temperature control with optional cooling, available Autosampler, and intuitive Scarabaeus Control and Analysis software making it the ideal platform for QC or R&D environments.
Features: - Unmatched data precision, accuracy, and reproducibility
- Robust, field proven torque transducer for high stability and reliable torque measurements
- Extremely rigid test frame for accurate compliance free data
- Available autosampler for simple unattended operation
- Pneumatic locking cylinders for repeatable sample sealing
- Powerful and intuitive Scarabaeus Software available in multiple languages & compatible with other manufacturers’ instruments
- User calibration and user replaceable seals
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| Torque Range | 0.0001 to 25 N.m | 0.001 to 20 Nm |
| Temperature Range | Inquire | Ambient to 230 °C |
| Frequency | 0.1 to 2.0 Hz (6 to 120 cpm) | 0.1 to 2.0 Hz (6 to 120 cpm) |
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