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

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
  • 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