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Limited Oxygen Index Apparatus
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Oxygen index is defined as minimum concentration of oxygen, expressed as volume percent in a mixture of oxygen and nitrogen that just support flaming combustion of plastic materials under equilibrium condition of candle like burning. The equilibrium is established by the relation between the net lost to the surroundings as measured by either time of burning or length of specimen burned. This point is approached from both sides of the critical oxygen concentration in order to establish the oxygen index. The “ASIAN” Limited Oxygen Index Apparatus consist of a test chimney made of borosilicate glass (size is 76mm internal diameter & 450mm long) suppurated by the metallic base and hook with the help of the metallic pillar. The mixture of nitrogen and oxygen is released from the bottom of tube. The tube is filled with glass beads for mixing and evenly distributing the gas mixture. The specimen holder, which holds the test specimen, made of U shape and fixed at the center of the chimney. There is the porous screen mounted below the level of the specimen holder, to prevent falling combustion debris from fouling the gas entry and distribution paths. There is a digital temperature indicator cum controller with thermocouple for the measurement and control the temperature within the chimney. A copper tube with suitable orifice for pilot flame is provided for igniting the specimen by inserting it from the top of the test column. The digital preset timer and buzzer is also mount in the instrument. Two Rotameter with needle valve are provided to control and measure oxygen and nitrogen flow in the test chimney. A timer for indicating the time of burning with a reset switch. The rotameter, temperature controller, timer are fitted in the sheet panel. The test chimney is fitted separately on the metallic platform. Flow Meter (Rotameter) : 10 to 90 cc/sec for Oxygen × 2cc/sec 30 to 270 cc/sec for Nitrogen × 10cc/sec Note : Item Required By The User For Complete Testing: Oxygen gas, nitrogen gas and LPG cylinders with its regulator and fitting, 220 V single phase power supply (Other Power optional).
Melt Flow Index Tester
51,000 - 55,000 Per Unit
01 Piece (MOQ)
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Melt Flow Index Tester
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1 Piece (MOQ)
Melt Flow Index
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The GLOBE Melt Flow Index Apparatus for thermoplastic materials consists of a heated extruder tube, a removable jet through which the material under test is extruded, and a piston and dead weights to apply the specified pressure on the material inside the extruder tube. The extruder tube is made from hardened die steel and is heated by means of two band heaters, which surround its outer circumference. A PID type digital temperature indicator-cum-controller is provided to indicate and control the temperature of the tube accurately. The heaters are lagged with mineral wool for providing thermal insulation. A cylindrical cavity is provided in the extruder tube for placing the test charge in during the test. The tube also has a hole parallel to the cavity for placing the temperature sensor in. The bottom of the tube is lagged with a 3 mm thick insulation of PTFE to prevent sticking of the extruder. A hollow metallic cylindrical shield is provided all around the extruder tube. The jet through which the extruder is pushed out is made from hardened and ground die steel. It is placed at the bottom of the extruder cavity and can be removed for cleaning by pushing it from the lower side. The extruder assembly is mounted on a swivable metallic plate to enable it to be titled for removal of the die for cleaning. A piston made from stainless steel, relieved at the upper end, is provided to apply pressure on the charge placed inside the cavity of the extruder tube. A sleeve is provided to guide the relieved portion of the piston. The top of the piston carries a platform for keeping the load on. The piston is thermally insulated from the load. A sheet metal control panel is mounted on the side of the equipment and houses the temperature controller and other electrical components. The equipment is finished in shore blue matalic painting and bright chrome plating to give it a corrosion resistant finish. One cleaning tool for the test cavity, one cleaning tool for the hole in the jet, one packing rod for pressing the charge inside the cavity, one plug for closing the hole in the jet when testing high flow rate materials, one cutting tool for extrudate, and one tool for pushing out the jet for cleaning, are supplied with the equipment. Dead weights for applying loads of 325 g, 1050 g, 2160 g, 5000 g, and 10000 g including the weight of the piston assembly are also supplied as standard accessories.
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