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Rosand RH2000




Compact system capable of meeting most test requirements encountered in capillary rheometry. Combining many advanced features associated with larger floor-standing models, the Rosand RH2000 system can be configured for research measurements through to Quality Control applications.

Key Differences

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The Rosand RH2000 bench top capillary rheometer provides highly flexible measurement capabilities and configuration options for a wide variety of applications - from polymer melts to pharmaceutical processing, and from foodstuffs to inks and coatings.

  • 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.

  • Wide range of high precision tungsten carbide dies as standard to cover all materials and test types.

  • 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.

  • Proprietary bi-modal speed control algorithms to optimize shear rate measurement range for a particular die.

  • Precise sample temperature control using three independent zone heaters, with 10 times DIN accuracy platinum resistance thermometers. High temperature (500°C maximum) and cooling coil options also available.

  • Nitrogen purge option available to minimize sample degradation.

  • Accessories for die swell measurement for evaluation of elastic samples.

  • Easy to use Flowmaster software with full range of tests and analyses for shear and extensional viscosity, as well as determining sample stability, wall slip and melt fracture.

Key applications

  • Characterization of polymer or suspension rheology across a range of shear rates and temperatures

  • Simulation of extensional viscosity dominated processes such as fiber spinning, blow molding, film blowing and thermoforming

  • Assessment of extrusion behavior for processes such as injection molding and hot melt extrusion

  • Evaluation of material behavior at process relevant shear rates such as high-speed coating and printing applications

  • Detection of polymer instabilities such as melt fracture and thermal degradation

  • Measurement of material elasticity and related properties such as die swell

Industry applications:

  • Polymers

  • Coatings

  • Ceramics

  • Metals

  • Pharmaceuticals

  • Sealants

  • Foods

  • Inks

Technical Specification

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  • Number of bores: Single bore (RH2100 model). Twin bores (RH2200 model)

  • Maximum force: 12kN (standard). 20kN (option)

  • Frame stiffness: 100kN.

  • Maximum speed: 600mm/min (standard). 1200mm/min (high speed option)

  • Dynamic range in speed: >120,000:1. (240,000:1 with high speed option)

  • Speed uncertainty: <0.1%

  • Temperature range: Ambient to 400°C (standard). Ambient to 500°C (high temperature option). 5°C to 200°C (low temperature cooling coil option)

  • Temperature control range: <±0.1°C

  • Bore diameter: 15mm (standard) 9.5mm; 12mm; 19mm; 24mm (bore options)

  • Barrel bore length: 250mm

  • Barrel material: Nitrided steel (standard). Hastelloy; Stainless Steel (barrel options)

  • Pressure transducer ranges: 30,000psi; 20,000psi; 10,000psi; 5,000psi; 1,500psi; 500psi

  • Dies: Tungsten carbide: precision ±5µm

  • Die diameter: 0.5mm to 2mm (in 0.5mm increments) and 3mm as standard. (Other diameters, including fine bore dies, available to special order)

  • Atmospheric control: Nitrogen purge for dry, inert test conditions (option)

Rosand RH2000


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