Instrumentation

The Melt Flow Index (MFI) Test Apparatus is a laboratory device used to measure the flow rate of molten plastic, which is crucial for evaluating the processability and viscosity of thermoplastic materials. The MFI test determines the ease with which a polymer flows when heated to a specific temperature and subjected to a particular load. This measurement is essential for quality control, material selection, and understanding the performance characteristics of plastic resins during processing.

Key Features:

• Accurate Flow Measurement: The MFI Test Apparatus provides precise measurement of the melt flow rate, which is the amount of polymer that flows through a specified orifice under a defined load, measured in grams per 10 minutes (g/10 min). This helps in evaluating the material's viscosity and processability.

• Standardized Test Method: The apparatus operates based on industry standards like ASTM D1238 and ISO 1133, ensuring the test results are consistent and reliable across different labs and industries.

• Temperature Control: The device is equipped with a temperature control system that maintains a constant test temperature, usually ranging from 190°C to 300°C, depending on the type of polymer being tested. Temperature stability is critical for accurate and reproducible results.

• Load Application: The test apparatus typically uses weights (commonly 2.16 kg or 5 kg) applied to the polymer sample to exert pressure, forcing the molten polymer to flow through a specific-sized orifice. The rate of flow under these conditions is recorded.

• Digital or Analog Readout: Modern Melt Flow Index test apparatuses feature digital displays that provide real-time readings of the melt flow rate. Some models also include data logging and analysis software for automated data collection and reporting.

• Multiple Orifice Sizes: Some MFI test apparatuses allow users to interchange orifice sizes depending on the material being tested and the specific requirements of the test. This provides versatility for testing different types of polymers.

• Built-In Safety Features: To ensure safe operation, the apparatus often includes features like automatic shutoff, over-temperature protection, and safety guards to prevent accidents or damage during testing.

• Easy Sample Preparation: The test involves placing a small amount of polymer resin into a barrel, heating it, and applying the load. This process is relatively simple, and most systems are designed for quick and easy setup.

Operating Pressure : 0-14LPM
Application Media : OXYGEN
V-Tech make Acrylic Body Rotameters are mainly used for Water / Salt Water, Air, Nitrogen, Hydrogen, Natural Gas application. These are integrally machined cut in acrylic body from imported transparent acrylic blocks sheets. These are also suited with flanged or screwed connections and several options of material for the wetted parts. All our products are developed as per industry norms, using premium raw material and latest technology. In addition to this, our products can be customized as per the specifications detailed by the customers. 

MATERIAL OF CONSTRUCTION

• Metering Tube : Solid Acrylic Block.
• Body : Imported transparent acrylic block.
• Wetted Parts : M.S. / S.S. / P.P. / Teflon.
• End Connection : S.S. 304/316/PVC/PP/MS
• Scale : Engraved on body.
• Packing : Neoprene / Teflon / Silicon. 

SPECIFICATIONS

• Model : V-Tech
• Temperature : Max 60°C
• Pressure : Max 25 Kg/Cm²
• Available sizes : 1/8" to 100 NB
• Flow Ranges : 2 to 60,000 LPH of water at ambient temperature and 0.1 to 750 Nm³/hr of air at NTP
• End Connection : Screwed / Flanged / Hose Nipple
• Orientation : Bottom – Top / Rear – Rear
• Accuracy : ± 2% of FSD
• Accessories : High & low flow alarms and 4-20 mA output on your request. Digital on your request 

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once?

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Acidity Test of Transformer Insulating Oil Causes of Acidity in Insulating Oil
In insulating oil in the transformer may occasionally come into contact with air. It may be during opening any blanking or due to leakage in the oil tanks or in associated pipe lines. Because of that the oxidation reaction in the transformer oil takes place, which further be accelerated due to temperature and presence of catalysts like iron, copper and dissolved metallic compounds in the transformer oil.