4 × 20 character VFD display
The vacuum fluorescent display with 4 lines and 20 characters shows detailed information about the test, entered conditions, measurement progress and results.
Clear display Test conditions Direct operation
Melt Flow Indexer LMI 4000 Series
This model includes a range of key features and options designed to make everyday work easier. Thanks to the colour touchscreen display, instrument operation is more intuitive and easier than before, while the robust construction and high accuracy make this instrument an ideal tool.
New features include easier handling of measured data, such as printing, export and archiving, a pneumatic weight lifting system, a pneumatic packing piston, a digital encoder, new automatic cutting and LaVa Suite software for convenient work with measured data.
An undeniable advantage of this model is the possibility of gradual retrofitting without the need for mechanical modifications. Please contact us — we will be pleased to present this instrument at your company completely free of charge and without obligation. This capillary extrusion plastometer complies with the international standards ASTM D1238 and D3364, ISO 1133, BS 2782, DIN 53735 and JIS K7210.
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Capillary plastometer
Dynisco LMI 4000 Series
Dynisco LMI 4000 Series is a range of capillary plastometers designed for measuring melt flow index, melt volume flow rate and extended rheological parameters. The instrument is designed for laboratory quality control with emphasis on accuracy, flexible programming, statistical evaluation and the option of connection to a printer or computer.
MFR / MVR Max. 425 °C Methods A / A-B / B MIWORKS / print / RS232
Operating temperature Max. 425 °C
Results MFR, MVR, MD, IV
Display 4 × 20 character VFD
Program memory Up to 60 sets of conditions
Simple display and programming
The LMI 4000 series uses clear controls with a vacuum fluorescent display, intelligent buttons and a membrane keypad. The user has quick access to common test conditions as well as the option to enter custom programs.
Intelligent buttons
The buttons below the display make it easier to navigate quickly through menus and enter the most common test parameters. For special tests, custom programs can be entered using the membrane keypad.
Quick menu Membrane keypad Custom programs
Multilingual operation
For international use, the language interface is available in English, German, French, Spanish and Czech.
Czech English European languages
Accuracy, software and outputs
Higher models of the LMI 4000 series support a digital encoder, statistical evaluation, printer output and operation with MIWORKS software for test data management.
Digital sensor for Method B
The optional D4059 digital sensor measures piston displacement and descent speed during Method B with an accuracy of ±0.025 mm over a test travel range of 25.4 mm. It enables up to 15 discrete melt index values to be obtained from a single barrel charge.
MIWORKS for Windows
MIWORKS software serves as a database for melt index testing. It enables test parameters to be transferred to the instrument, control charts to be created and data to be exported to spreadsheet applications.
Comprehensive measurement reports
Models D4003 and D4004 can generate detailed reports including test conditions, melt index values, shear stress, viscosity, apparent melt density and PET intrinsic viscosity correlation.
Statistical evaluation
When the same material is measured repeatedly, the instrument calculates the average, standard deviation and coefficient of variation for melt index and viscosity values.
Options for special testing
For more demanding laboratory operations, the LMI 4000 can be supplemented with elements that increase safety, ergonomics and measurement reproducibility when working with heavier loads, corrosive materials or frequent testing.
Pneumatic or electric lift
Weight lowering and lifting systems make working with heavy loads easier and support the safe performance of flow ratio tests or tests with multiple loads.
Heavier loads Flow Ratio Safer operation
Alloy barrel
For testing PVC and other corrosive materials, an alloy barrel is available, extending the instrument’s usability for more demanding application conditions.
PVC Corrosive materials Extended resistance
Electric barrel cleaning
For frequent testing or work with engineering polymers that are more difficult to clean, the optional high-speed electric barrel bore cleaning kit is suitable.
Frequent testing Easier cleaning Engineering polymers
Key benefits for quality control
The LMI 4000 is a suitable solution for laboratories requiring reliable melt flow index measurement, broader evaluation options and flexible expansion according to test methods.
01
Clear test programming
Intelligent buttons, a membrane keypad and program memory simplify repeated entry of test conditions.
02
More accurate Method B
The optional digital sensor enables precise piston displacement measurement and collection of multiple values from a single test.
03
Extended reporting
Selected models support printing and outputs with MFR, MVR, viscosity, shear parameters, melt density and statistical results.
04
Flexibility for demanding materials
Optional lifts, an alloy barrel, automatic cutting and a cleaning kit expand the possibilities of use in production and development laboratories.
i Recommendation: For laboratories working with Method B, multiple loads or frequent repeated measurements, it is advisable to consider a configuration with a digital sensor, pneumatic lift and MIWORKS software.
Provided results
The LMI 4000 enables the evaluation of basic and extended parameters of polymer melt flow behaviour.
| Melt flow index | MFR – Melt Flow Rate [g/10 min] |
|---|---|
| Melt volume flow index | MVR – Melt Volume Rate [cm³/10 min] |
| Melt density | MD – Melt Density [g/cm³] |
| Intrinsic viscosity of PET | IV – Intrinsic Viscosity [dl/g] |
| Shear viscosity | Shear Viscosity [Pa·s] |
| Shear rate | Shear Rate [1/s] |
Performance parameters
Main technical parameters of the Dynisco LMI 4000 Series instrument for melt flow index measurement.
| Compliant with standards | ISO 1133-1, ASTM D1238 & D3364, BS 2782, DIN 53735, JIS K7210 |
|---|---|
| Operating temperature | Max. 425 °C |
| Temperature control accuracy | ±0.10 °C |
| Timer accuracy | 0.001 s |
| Digital sensor accuracy | ±0.025 mm above 25.4 mm |
| Display | Vacuum fluorescent display, 4 lines of 20 characters |
| Keyboard | Membrane type |
| Weights | Stainless steel, accuracy ±0.5% |
| Communication | RS232, parallel port compatible with Epson / IBM |
| Software | MIWORKS for Windows for test database, analysis and data export |
| Program memory | Up to 60 sets of test conditions for models D4003 and D4004 |
Model options of the 4000 series
The LMI 4000 series includes several model levels according to the required measurement method, program capacity, print outputs and computer connection.
| Model D4001 | Base model for Method A, 5-program memory. |
|---|---|
| Model D4002 | Supports Methods A, B and Flow Rate Ratio, 20-program memory, with upgrade option to higher models. |
| Model D4003 | Extended capacity of up to 60 programs, printer communication, reporting of shear rate, shear stress, viscosity and statistics. |
| Model D4004 | Highest model with computer communication, the option of multiplex connection of up to 8 units to one PC and support for MIWORKS software. |
Additional parameters
Dimensional, weight and power supply data for the base model.
| Overall dimensions of the base model | 300 mm W × 350 mm D × 570 mm H |
|---|---|
| Base model weight | 15 kg |
| Shipping weight of the base model with weights | 21 kg |
| System voltage | 120 V / 60 Hz or 230 Vac / 50 Hz, ±10% |
| Power | Max. 400 W, typically 60 W at setpoint |
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Melt Flow Indexer Accessories - Black Box
Accessories can be ordered separately or as a complete set in the form of a complete "black-box" case.
Measuring piston for Melt Flow Indexers
Certified measuring piston for Dynisco capillary plastometer with a declared weight of 100g. The piston contains 3 marked positions (lines) that show the position of the start of sampling and the end of sampling in the range of 30 mm according to ISO 1133 and a distance of 1 inch for ASTM D1238.
Cleaning cotton patches
Cleaning wheels for laboratory instruments have high cotton quality and low dust resistance. As a result, you will always have the instrument quickly and conveniently cleaned of all polymer deposits inside the barrel. Thanks to the 100% cotton, the polymer does not smear on the barrel wall, but stays on the cotton roller, which does not tear and leaves no lint.
Knife for manual cutting
Knife for manual cutting of the sample from the capillary melt flow indexer and for subsequent cleaning of the capillary. It is made of high quality wooden handle and mild steel, which guarantees flexible blade bending and ensures comfortable cutting of the sample.
Standard capillary 2,095 mm / 8 mm
Standard capillary for Dynisco plastometer with an inner diameter of 0.95 mm and a length of 8 mm. The capillary is identical on both sides and is coated with a layer of Wolram Carbide, which gives the capillaries greater hardness and longer life. The capillary is used for all standard polymeric materials up to a flow index range of 0.1 [g / 10min] to 80 [g / 10min]. For higher indices, we recommend using a so-called half-capillary with half dimensions.
Half capillary 2,095 mm / 8 mm
The half capillary is used for polymeric materials with very low viscosity. These materials, which achieve flow indices higher than 80 [g / 10min], will slow down and their testing will be no problem. If you are going to use a half capillary, you need to adjust the capillary plastometer settings and record this change in settings.
Capillary brush
The stainless steel capillary brush with a diameter of 2.2 mm is the ideal tool for materials that are difficult to clean with heat. Thanks to its solid construction, it is very easy and comfortable to use despite its miniature size. The brush confidently cleans all residual polymer deposits inside the capillary and thus ensures perfect measurement results.
Memmert dryer
The universally applicable Memmert laboratory dryer is a classic temperature control device in the field of research, science and materials testing. Technologically improved construction made of high quality and easy to clean stainless steel. It has ventilation and control technology (optional), protection against overheating and precisely tuned heating technology.
Inspection mirror
The inspection mirror is used for inspection when cleaning the device, thanks to the telescopic handle you can easily and without risk get everywhere where you would otherwise have to lean or lean towards places with high temperature and thus avoid the risk of burns.
Go/No-Go Roller Calibre for Capillary
Cylindrical certified calibre for checking the capillary to the Dynisco melt flow indexer. The green end of the caliper must pass through the inner diameter of the capillary but the red end of the caliber must not pass through the diameter of the capillary. If the red end of the roller gauge passes through the capillary, it means that the capillary's inner diameter does not meet the required specifications and must be replaced.
Rack for melt flow indexer accessories
The LMI accessory rack is used to store hot or used tools that are hung in the rack. After cooling, the individual elements can be cleaned. The rack helps to keep the workbench tidy and minimise the risk of injury.
High Flow Plug
The High Flow Plug is used as a seal against leakage of a filled barrel of a polymer that has a very low viscosity.
Cleaning kit for melt flow indexers barrel
Cordless angle drill for easy and quick cleaning of the melt flow indexer barrel. In combination with the cleaning mandrel with replaceable tip, this set is the best helper, which also has a positive effect on the accuracy and the results provided. It also includes an extension mandrel for attaching the brush.
Bosch Professional Angle Drill
Cordless angle drill for easy and quick cleaning of the melt flow indexer barrel. In combination with the cleaning mandrel with replaceable tip, this set is the best helper, which also has a positive effect on the accuracy and the results provided.
Cleaning rod (8.5in)
The 8.5in (22cm) cleaning rod is used in combination with the cleaning tip and the cotton cleaning wheels. With this combination, you can clean the chamber quickly and easily using the cordless drill, with a positive effect on the accuracy of the instrument.
Cleaning tip
The barrel cleaning tip is used in combination with cotton cleaning patches and an extension cleaning rod. The tips are replaceable and made of aluminium to prevent damage to the melt flow indexer barrel. Nevertheless, this cleaning tip is only used with cotton patches.
Technical support
Support, certifications and technical resources
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Documentation
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Training
E-Learning
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Instructional videos
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Technical information
Important articles
Technical articles, recommendations and practical information about products, their use and the resolution of selected operational or application-related issues.
Go to articlesi Recommendation: For technical verification of a specific product, start with the certificates and approvals section. For operator work, E-Learning and instructional videos are particularly suitable.