Rosand RH7/RH10
Model No. :
Brand : Netzch
The Rosand RH7 and RH10 are research-grade, floor-standing capillary rheometers engineered for characterising material flow under extreme pressure and high shear rate conditions. Featuring a robust “H” frame design, these systems provide the mechanical rigidity required for high-load extrusion testing of polymer melts, ceramics, and food products.
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Maximum drive force up to 100 kN (RH10)
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Ultra-wide dynamic speed range of 400,000:1
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Precise temperature control up to 500°C
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− Features
- Single and twin bore barrel options for cost effective routine measurement capability through to dual measurements for simultaneous assessment of absolute shear viscosity and extensional (elongational) viscosities.
- Maximum drive force (up to 20kN) and maximum speed (up to 1200mm/min) capabilities enable a wide range of shear rates, and correlation with many real material processing conditions.
- Rigid one-piece cantilever frame design providing extreme mechanical strength and stiffness for a compact bench top unit.
- Unique swivel head design gives easy access to the rheometer barrel for sample loading and instrument cleaning.
- Range of optional barrel sizes and barrel materials to permit measurement of thermally-sensitive, chemically-aggressive or aqueous-based samples.
- Easily interchangeable melt pressure transducers to cover all test requirements – configured with low noise, triple-stage amplifiers for optimized measurement sensitivity at the die entrance
- Precise sample temperature control using three independent zone heaters, with high accuracy platinum resistance thermometers. High temperature (500°C maximum) and cooling coil options also available.
+ Technical Specifications
+ Resources
Features
- Single and twin bore barrel options for cost effective routine measurement capability through to dual measurements for simultaneous assessment of absolute shear viscosity and extensional (elongational) viscosities.
- Maximum drive force (up to 20kN) and maximum speed (up to 1200mm/min) capabilities enable a wide range of shear rates, and correlation with many real material processing conditions.
- Rigid one-piece cantilever frame design providing extreme mechanical strength and stiffness for a compact bench top unit.
- Unique swivel head design gives easy access to the rheometer barrel for sample loading and instrument cleaning.
- Range of optional barrel sizes and barrel materials to permit measurement of thermally-sensitive, chemically-aggressive or aqueous-based samples.
- Easily interchangeable melt pressure transducers to cover all test requirements – configured with low noise, triple-stage amplifiers for optimized measurement sensitivity at the die entrance
- Precise sample temperature control using three independent zone heaters, with high accuracy platinum resistance thermometers. High temperature (500°C maximum) and cooling coil options also available.
Technical Specifications
| Number of bores | Double bore |
| Maximum force | 50 kN for RH7, 100 kN for RH10 |
| Frame stiffness | 250 kN |
| Maximum speed | 600 mm/min for RH7, 1200 mm/min for RH10 |
| Dynamic range in speed | up to 400,000:1 |
| Speed uncertainty | < 0.1 % |
| Temperature range | Ambient to 400°C (500°C option) 5°C to 300°C (low-temperature cooling coil option) |
| Temperature control | < ± 0.1°C |
| Bore diameter | 15 mm standard (9.5, 12, 19 and 24 mm bore options) |
| Barrel bore length | 290 mm |
| Barrel material | Nitrided steel standard (Hastelloy or stainless steel options) |
| Pressure transducer ranges | 30000, 15000, 10000, 5000, 3000, 1500, 1000*, 500* or 250 psi |
| Pressure transducer accuracy | ± 0.25% |
| Dies | Tungsten carbide, precision ± 5µm |
| Die diameter | 0.5 to 2 mm (in 0.5 mm increments) and 3 mm standard (other diameters, including fine bore dies, available to special order) |
| Maximum shear rate | Maximum shear rate up to ≈ 10⁸ s⁻¹ (5 * 10⁷ s⁻¹ for RH7) (depending on die and barrel diameter) |
Application & Standards
Accessories
Software
FAQs
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