This flame propagation tester is designed to evaluate the propagation of flame beyond the area exposed to ignition sources. It is suitable for testing vinyl-coated fabric blackout linings, various fabrics including multilayered fabrics, films, plastic blinds with or without reinforcement or backing, and materials with area density greater than 700g/m².

NFPA 701-2004 Methods 2

• Furnace dimensions: length and width (305 ± 5) mm, height (2130 ± 10) mm
• Construction: 1.5mm thick 304 stainless steel with transparent observation window
• Top sample rod: positioned 1190 ± 10mm from bottom furnace edge with 4mm horizontal alignment holes
• Top rod composition: steel rods with diameter (1.5 ± 0.1) mm or (3.0 ± 0.1) mm, length (330 ± 10) mm with sharpened ends
• Bottom sample rod: steel rods with diameter (1.5 ± 0.1) mm, length (255 ± 10) mm with sharpened ends
• Vertical guide wires: soft steel wire pairs positioned 100 ± 5mm from center, 200 ± 5mm apart
• Wire spacing: 25 ± 2mm front to back in chamber
• Guide wire mounting: 6 ± 0.05mm diameter rods
• Upper chamber: glass fiber cloth baffle (1000 ± 10) mm × (125 ± 5) mm with reinforced ends

• Installation: fixed seat with 20-degree tilt
• Heat output: 800-1000 BTU/ft³
• Nozzle position: 100mm from test bottom
• Flowmeter: rotor type with maximum range 150 L/hr or 300 L/hr
• Needle valve: controls flame height adjustment
• Pressure gauge: 0-1MPa range with 0.5 accuracy
• Flame measurement: precision scale with 1mm accuracy

• Ignition: high voltage automatic ignition
• Combustion timer: 0-99.99s programmable, 0.01s resolution, 0.1s accuracy
• Continued combustion timer: 0-99.99s programmable, 0.01s resolution, 0.1s accuracy
• Automation: integrated control of ignition, combustion timing, and continued combustion duration