FTT FMVSS 302 is manufactured to the Federal Motor Vehicle Safety Standard. FMVSS 302 specifies combustion resistance requirements for materials used in passenger compartments of motor vehicles (ie, passenger cars, multi-purpose passenger cars, trucks, and buses). This is specifically to reduce death and injury to motor vehicle occupants caused by vehicle fires from inside a vehicle, from sources such as matches or cigarettes.
The FTT FMVSS 302 consists of a stainless steel combustion chamber, gas controls and safety recoil device, fine-tuned ignition source, sample holders.
Combustion Chamber
The combustion chamber is a stainless steel enclosure with a heat-resistant window on the front for observation.
Gas Controls
The gas flow is controlled by a needle valve outside the chamber to provide flame stability. The connection is made at the top of the anti-kickback with a standard 6 mm hose hook.
Ignition Source
Bunsen burner tubes option available. The ISO marked pipe has an inner diameter of 9,5 mm and is suitable for FMVSS. The Bunsen burner tube can be replaced and cleaned very easily. A needle valve (located outside) is used to set the flame height to 38mm. The calorific value of the gas supplied to the burner should be approximately 38 mm. The recommended gas source is natural gas or the flame temperature equivalent.
Sample Holders
The test specimen is placed between two matching U-shaped stainless steel frames 25mm wide and 10mm high. The internal dimension of the ISO 3795 U-shaped frame is 50 mm wide and 330 mm long. The FMVSS U-shaped frame is 2" wide and 12" long. A specimen that softens at the flame tip and bends to cause uneven combustion is held horizontally by supports of thin, heat-resistant wires 25 mm in diameter, spanning the width of the U-shaped frame below the specimen at 0.25 mm intervals.
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