H-frame consisting of two vertical 65mm diameter chrome bars, base plate, crosshead and top plate.

Area below barrel open

Area above barrel guarded, access door with motor drive interlock

Frame strength



100kN / mm drive to die (with 15mm bore)


Interlocked guarding to protect operator from moving and high-temperature parts

Crosshead force transducer to prevent mechanical damage

Motor over-current trip

Emergency stop switch

Fume extraction

89/392/EEC & 91/368/EEC - machinery safety accreditation


Twin bore, 15mm diameter as standard (optional 20mm, 12mm)

Bore length 280mm

Three zone temperature control, RTD temperature sensors


2400mm(h) x 730mm(w) x 800mm(d)

Weight 400kg


220VAC (Single Phase) 50/60Hz 16A



875W brushless motor driving recirculating ball screw


10,000 pulse encoder giving 0.02µm resolution


0 to 50kN drive force

0.01mm/min to 500mm/min speed

50kN/500mm/min combination possible

Drive modes

Constant speed 0.01mm/min to 500mm/min

Constant pressure 1% full scale to 95% full scale

Constant crosshead force 2kN to 45kN

Temperature Control


Three zone measurement and control


Platinum resistance thermometers to DIN 43760

Control Range

Room temperature – 400°C (Standard)

Room temperature – 500°C (Optional)




±1.5°C throughout both barrel bores


Pressure transducers

One per bore, mounted just above the dies at equal heights

Ranges available

3.45, 5.17, 6.9, 10.34, 20.69, 34.48, 51.72, 68.96, 103.45, 137.93, 206.9 MPa

10.34 and 68.96 MPa pressure transducers are included in the standard kit.


±0.25% full scale

Temperature drift

0.2psi/°C melt temperature

Contact material

15-5 PH with Amoloy coating

Data conversion


Force measurement

By transducer in crosshead.

Melt temperature

By platinum resistance thermometer to DIN 43760

Flow rate

By 10,000ppr encoder on drive motor, resolution 0.02µm

Accumulated position error <50µm full travel

User channels

Five 4-20mA channels are available for connection to user-supplied measurement devices. The inputs are sampled at 16-bits, and the measurements may be recorded and manipulated within the RheoSolve software



Tungsten carbide


±5µm diameter, ±10µm length


Length 0.25mm to 30mm

Diameter 0.25mm to 5mm

Entry angle 180° to 60°

User Interface


Backlit LCD display, showing machine operating status and barrel temperature


Keypad and thumbwheel


Crosshead up/down

Set barrel temperature



The RheoSolve software is a single package that is used to configure experiments and to analyse the resulting data. It may also be used in stand-alone mode for offline analysis.
The software is designed for high productivity and includes many ease-of-use features and very powerful analysis and reporting. The user interface is highly configurable to let you work in the way you want, and a series of user levels can be defined to restrict access to certain features of the software so that less advanced users can use the software without the risk of producing invalid results.


Windows 2000/Vista/XP/7

Recommended system

Pentium 4 2GHz, 128MB RAM, 40GB disk drive, 1280x1024 display resolution. A single USB port is required for connection to the rheometer.

Rheometer control

Manual crosshead control

Temperature zone control

Pre-condition sample (thermal stabilisation and compression)

Run pre-defined test

Purge barrel contents

Transducer database

Details of all transducer configuration, including calibration information, is held in a database, so working with multiple transducers is made more convenient. The software contains routines to assist with multi-point calibration of pressure and force transducers

Die database

Database of available dies

Support for capillary, orifice and rectangular slot dies

Available test types

Shear rate sequence – twin bore

Shear stress sequence (constant pressure)

Thermal degradation tests

Pressure vs volume test

Melt fracture test

Melt rupture test

User defined test (script based)

Data logging

Low-pass filtering available

Recorded data: 2x pressure, 3x temperature, piston speed, piston position, time, user-defined acquisition channels

Test information

Test progress bar

Real time graphs of pressures, speed and position

Real-time calculation and graphing of rheological properties

Pressure equilibrium

Automatic or manual

Basic analysis

Calculation of shear and extensional viscosity

Calculation of power law index (n)

Bagley and Rabinowitsch correction

Non-Newtonian index

Carreau, Cross, power law and log polynomial curve fits

Derived curves

Shear rate, melt volume, volumetric flow rate

User defined curves

Facility to use data from the standard channels (force, pressure, temperature), or user-provided measurement channels to derive further curves

User defined analysis

A powerful set of functions is provided to allow user-defined calculations to be made on the captured data.


The software allows you to work in whatever units you choose – it provides by default SI, cgs and US units, but also allows you to define your own. All numeric quantities (measured data and documentation information) are recorded along with their units, and when results are calculated their resulting units are calculated too, ensuring consistency and greatly reducing the potential for errors.


Two types of documentation information are saved along with the test data: automatically recorded documentation (transducer and die information for example), and user-entered documentation. Documentation fields are configurable depending on your particular requirements, and fields can be made mandatory to ensure that critical information is recorded for every test.


Graphs are used for displaying measured and calculated data. Multiple tests and multiple quantities may be displayed on the same graph. Highly configurable appearance including colours, automatic or manual axis scaling, linear or logarithmic scaling, user-defined or automatic labelling. Graphs may be zoomed to examine the data in detail.


Tables are used to display calculated results or documentation information. The results from multiple tests may be displayed in the same table. Flexible formatting includes colours, fonts, column headings, units and the format of numeric results.

Data export

Data can be exported to Microsoft Excel (Office 95 onwards) in native file format. There is also the facility to export data in CSV (comma separated values) format, compatible with almost all numeric analysis packages. The software also includes a graphical editor to prepare curves for publishing.

Test database

Test data may be saved either in individual files, or in a test database (Microsoft Access format). Multiple databases may be created, for different users or different applications. Test data stored in files may be copied into the database and vice versa. A powerful search tool can be used to interrogate the database and find tests that match particular criteria: for example, by the date of the test, the type of sample, a shear viscosity falling outside specified limits or a test performed at a particular temperature.


An auto-save facility ensures that data from a test is never lost, and also imposes a consistent naming scheme for data files. Data can be automatically saved to files or to the test database.

User levels

The software provides for three password-protected user levels. The software functions available to each level may be defined, preventing access to sensitive operations that might affect the accuracy of the data.

Saving settings

Entire software configurations, or partial configurations, may be saved and later restored. This facility is useful both as a back-up mechanism and also to allow quick switching between different test types (for example, single bore and twin bore).


Full context sensitive help is available, together with a printed and an on-line manual.


Standard Option
Diameter 15.0 mm



Material Nitrided EN40C Steel
(BS970 897M39)
Length 280 mm

Standard Option
Frame strength 290kN
Max drive force 50 kN (1) 100 kN (1)
Motor Power 2,000 VA
Max drive speed 500 mm/min (1) 1,000 mm/min (1)
Speed Range 50,000:1 (1) 100,000:1(1)
Speed Resolution 1 part in 10,000 (1)

(1)Drive force is available and stable at all speeds

(2)100kN and 1,000 mm/min options are not available together.

Temperature Measurement
Standard Option
Zones 3 measurement zones + 3 control zones
Added zones
Temperature Ranges 50 to 400 oC 50 to 500 oC
Other ranges are available as special orders
Sensors 3 units, Platinum Resistance Thermometers, type Pt-100
Accuracy better than 10 times DIN 43760 standard

Temperature Control System
Control Advanced algorithms using ( PID + DAC ) control loops