Flammability Tester Fire Propagation Test Apparatus

This apparatus is designed to determine surface burning characteristics of building materials and flame propagation rate of exposed surfaces such as walls and ceilings (including solid plastics), while simultaneously measuring smoke density.

This test method applies to exposed surfaces including ceilings or walls, provided the materials or assemblies can support themselves or be supported during testing. The method determines burning behavior by observing flame spread along test specimens, with reports generated for flame spread and smoke density measurements.

• ASTM E84: Standard test method for surface burning characteristics of building materials
• UL723: Test for surface burning characteristics of building materials

• Power: AC380V±10%
• Max Power: 5KW
• Test tunnel furnace: Length 7.62M, open end cross section 0.45M * 0.3M, firebrick max temperature 2500℃
• Observation: 16 isometric observation windows, one fire observation window with double-layer high-temperature quartz glass, SUS304 stainless steel frame
• Sealing: Water seal structure with sample cover plate sides broken into tank during test for better sealing
• Air control: Adjustable shutter for precise air flow control inside furnace
• Thermocouple: K-type, diameter 3mm, 3 sets (Omega USA imported), measuring range ≤1300℃
• Exhaust port: Rectangle to round transition, diameter 406mm
• Smoke density measurement: Installed 4.9~12.2M from tunnel furnace
• Gas burner: Spaced 305mm from fire end, 190mm below test sample surface
• Light source: Two gas burners, nozzle distance 203mm, energy output 5.3Mj/min
• Ignition: High voltage electronic ignition

• Test furnace size: L9456*W1067*H1400 (excluding flue)
• Furnace base: 100*50 channel steel welded, surface spray treatment
• Flue: Double-layer with high temperature asbestos center, SUS304 stainless steel inner layer, galvanized sheet outer layer (T1.2)
• Sample plate: Calcium silicate cement board, high temperature resistant to 1300℃
• Sample cover: T2.0 SUS304 stainless steel
• Control box: T1.2 cold plate, CNC formed, white painted surface

• Gas: 99% purity (supplied by user)
• Flow meter: Domestic brand, range 2~20L/min, accuracy 2%
• U type pressure gauge: USA origin, water column 0~36 inches, resolution 0.1 inch
• Pressure gauge: 0~200Kpa (0~30psi), resolution 5Kpa
• Pressure regulating valve: 0~10kg/min continuously adjustable

• Light source: Imported quartz halogen lamp (100W, 12V, 2000~3000Lm)
• Receiver: Spectral response matches CIE light meter standards
• Installation: Installed at pipe end (length 150), opposite end has dustproof window, glossy black anti-reflection inner wall
• Light transmittance: 0% = no light, 100% = full transmission

• Computer control system with PC and printer (Windows XP)
• Light transmittance measurement software for curve and report generation
• All electronic components from domestic leading brands
• Safety protections: Power overload, short circuit protection, control circuit overload protection

• Measures flame propagation speed based on time of flame through observation windows
• Requires calibration and two preliminary tests (red oak and asbestos cement specimens)
• Calculates Flame Spread Index (FSI) using specific formulas based on total area measurements
• Materials classified: Class A (0-25), Class B (26-75), Class C (76-200)
• High buildings require FSI<25 materials; FSI>100 materials don't meet flame retardant requirements

• Six samples placed under 12mm thick calcium silicate cement
• Key measurements:
  • Time for flame to arrive at each observation point
  • Flame spread distance in first 1.5 minutes
  • Total flame spread distance (10 minute test)
  • Maximum flame spread distance and time

• Measures temperature change via thermocouple sensor in sealed space during sample burning
• Measurement intervals: Every 30s (0-3 min), every 1 min (4-10 min), every 2 min (12-20 min)
• BS Class 0 standard: Class 1 material total index S ≤ 12; first sub-index ≤ 6

• Ground level, well ventilated area free of flammable, explosive, or corrosive gases/dust
• No strong electromagnetic radiation sources nearby
• Adequate maintenance space around equipment
• Temperature: 5℃ ~ 30℃ (operating), 0℃ ~ 45℃ (non-operating)
• Pressure: 86 ~ 106kpa
• Power: AC380V / 50HZ (±10% voltage, ±1% frequency fluctuation)
• User must provide appropriate capacity air/power switches for exclusive equipment use