XNR 400D

Touch Screen Color Display Integrated Automated Multi-weight System
MFI definition
The Melt Flow Indexer is related to the melted material viscosity. It allows the operator to make an estimation of “Mean molecular weight”, at the same time giving an indication of melt “flow ability” through a die.

The Melt Index is defined as the weight or the volume of melted material flowing through a calibrated die, under the effect of a pre-determined force, at constant temperature and for the total time of 10 minutes.

A user friendly instrument with innovative specifications Integrated automated Multiweight system
Built in weights (all weights confirm to International standards). The weight or the weights (max. 4) are automatically selected by a simple touch of the operator on the screen. In case of multi-weight testing the choice can be for incremental or decrement testing. No manual weight handling is required.

User interface
The basic instrument has a wide color touch screen for a simple and fast input of the test parameters, visualization of test execution and final results. The instrument can be connected to a PC through a RS232 port for direct acquisition of the test parameters and test results which can be directly saved or exported with the SW included in the supply. Also, data can be saved directly on an USB memory and downloaded in a remote PC. The software package provided with the instrument does not require any license; hence multiple installations can be made in case of multiple operators.

The multi-weight test (up to 4 weights during the same test in an increasing or decreasing mode) allows for calculation of the following results to indicate the rheological properties of material:

  • FFR ( MFR ratio with different weights)
  • Shear Stress
  • Shear Rate
  • Apparent viscosity
  • Diagram MFR vs. Time
  • Diagram MVR vs. Time

International reference standards and related methods

  • ISO 1133, ASTM D1238
  • Method A: gravimetric / MFR (Melt Flow Rate)
  • Method B: volumetric / MVR (Melt Volume Rate)


    • Movable oven for easy cleaning and inspection
    • PC software for results acquisition, saving, Export and printing of test parameters and results
    • USB port for “easy data transfer”
    • Measurement range: 1.0g-100g/10min(MFR) and 0.01-350cm3/10min(MVR)

Technical Specifications


      • Temperature working range: 120°C to 450 °C
      • Temperature rising time: <30min
      • Temperature fluctuation: ± 0.5 °C
      • Temperature display error: ≤± 0.2 °C
      • Temperature recovery time: <4min
      • Accuracy of timer:0.1s
      • Cut-off time interval: 1-180000s


      • Encoder for piston displacement detection (MVR)
      • MVR measurement accuracy: ±0.03%F.S
      • Piston displacement accuracy: 0.02 mm
      • Piston displacement resolution: 0.005 mm


      • Automatic application of the selected testing weights
      • On board multi-weight system including following weights: 0.325/ 1.200 / 2.160 / 3.80 / 5.00 / 10.00 / 21.60 Kg
      • Accuracy of weight: ± 0.5%

Power supply

      • Electric supply: (220-15%~220+10% )VAC 50Hz 800W


      • Dimensions: 690×630×1500 mm (height)
      • Weight: About 180kg