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.

The Rosand RH2000 capillary rheometer system enables controlled extrusion (by volumetric flow) of a sample through a high precision die of known dimensions, to characterize material flow properties typically under conditions of high force (or pressure) and/or high shear rate. Using the twin bore barrel option and a ‘zero length’ die configuration allows simultaneous determination of shear viscosity and extensional (elongational) viscosity as a function of shear (or deformation) rate.

A capillary rheometer system comprises several key components to enable robust, reliable and accessible rheological measurements for a particular sample or application:

  • Capillary rheometer base unit. Includes the barrel with bore(s) to load the sample – the bore diameter and barrel material must be compatible with the material(s) under test. The base unit also includes a head unit, which has a mechanical connection to the pistons which are used to extrude the sample. Key system functions of drive force and piston speed range are controlled by the base unit.
  • Die and pressure transducer combination. The die is mounted at the bottom of the barrel bore, and its dimensions define the applied shear field. A melt pressure transducer is mounted in the barrel to measure the resultant pressure at the die entrance as the material is extruded. The die dimensions and pressure transducer range must be appropriate to the sample type and test under consideration.
  • Temperature and/or environmental control options. Accurate control of barrel temperature is essential since rheological properties are a strong function of temperature. For thermally-sensitive materials, thermal equilibrium times and inert test environments are critical considerations to ensure reliable data.
  • Instrument software. Rheological testing can be, by its nature, relatively complex to set up. The Rosand Flowmaster software interface is designed for simplicity and ease-of use with intuitive test set-up methodology in conjunction with a ‘live’ instrument graphic at run time reporting all key test and measurement parameters.

If you are unsure as to specifying an appropriate rheometer model for your application, Malvern recommend contacting us for further advice and/or a sample test and evaluation report.

Understanding the application under consideration, and the associated rheological test requirements, is a key factor in selecting the most appropriate rheometer system.

General

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).

Weights and dimensions (base)

Dimensions (W, D, H):
Rheometer base unit: 550mm, 650mm, 1100mm Electronics box: 340mm, 530mm, 650mm
Weight:
Rheometer base unit: 120kg (without accessories) Electronics box: 30kg

Operating environment

Power:
Single phase AC 230V 50Hz 16A.
Temperature:
15°C – 40°C.
Humidity:
35% - 80% non-condensing.

The Rosand range of capillary rheometers can be configured with a variety of measurement accessories to cover a range of application requirements.

Rosand RH2000

Dies

Wide range as standard for all material and test types.

Interchangeable capillary dies for Rosand rheometers define the applied shear field and deformation regime when a material is extruded through them.

More information

Die and Melt Cutters

Prevents extrudate elongation for die swell measurements.

Provides controlled cutting of the melt extrudate below the die exit to ensure accurate die swell measurements by preventing gravitational extension.

More information

Die swell

Sample elasticity from direct measurement of extrudate diameter.

Die swell, or extrudate swell, is a common phenomenon in polymer processing, and is related to elastic recovery of the melt following extrusion through a die.

More information

Protect your investment and ensure optimized performance at all times with Malvern Panalytical's service plans.

When you purchase a Malvern Panalytical product we understand that this is just the first stage of a working relationship that will last for the lifetime of the instrument. Depending on your needs, Malvern Panalytical will provide the support for your business.

Help Desk

Training

Software downloads

Malvern Panalytical's service options- choose the right plan for you:

Malvern Panalytical Platinum Plan

For laboratories where maximizing instrument up-time is critical to its daily performance. Our highest level of response and the 'all inclusive' price plan takes care of those unexpected repair bills should the unfortunate occur.

Malvern Panalytical Gold Plan

Enhance your laboratory productivity by maintaining instrument efficiency. Still receive that priority response, combined with specialist technical and software support, we'll keep your instrument performance on track to deliver.

Malvern Panalytical Bronze Visit

For laboratories looking to optimize instrument performance, regular preventative maintenance is essential.

Platinum PlanGold PlanBronze Visit
Annual PM/PV Test
yes
yes
no
Telephone / Email Support
yes
yes
no
Priority Response
yes
yes
no
Emergency Breakdown visits*
yes
yes
no
Parts Included
yes
no
no
Technical & Software Support
yes
yes
yes
IQ/OQ (Pharma)***
yes
yes
yes

*including labour & travel costs***available at an additional cost