Home> Product Information> Specifications

Construction
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
290kN
Stiffness
100kN / mm drive to die (with 15mm bore)
Safety
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
Barrel
Twin bore, 15mm diameter as standard (optional 20mm, 12mm)
Bore length 280mm
Three zone temperature control, RTD temperature sensors
Dimensions
2400mm(h) x 730mm(w) x 800mm(d)
Weight 400kg
Services
220VAC (Single Phase) 50/60Hz 16A

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Drive

Type
875W brushless motor driving recirculating ball screw
Feedback
10,000 pulse encoder giving 0.02µm resolution
Range
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

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Temperature Control

Type
Three zone measurement and control
Sensors
Platinum resistance thermometers to DIN 43760
Control Range
Room temperature – 400°C (Standard)
Room temperature – 500°C (Optional)
Accuracy
±0.5°C
Uniformity
±1.5°C throughout both barrel bores

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Instrumentation

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.
Accuracy
±0.25% full scale
Temperature drift
0.2psi/°C melt temperature
Contact material
15-5 PH with Amoloy coating
Data conversion
16-bit
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

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Dies

Type
Tungsten carbide
Tolerance
±5µm diameter, ±10µm length
Range
Length 0.25mm to 30mm
Diameter 0.25mm to 5mm
Entry angle 180° to 60°

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User Interface

Display
Backlit LCD display, showing machine operating status and barrel temperature
Input
Keypad and thumbwheel
Functions
Crosshead up/down
Set barrel temperature
Diagnostics

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Software
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.

Platform
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.
Units
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.
Documentation
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
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
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.
Auto-save
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).
Documentation
Full context sensitive help is available, together with a printed and an on-line manual.

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Options

Barrel
Standard Option
Diameter 15.0 mm

12.0mm

20.0mm

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

(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

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