Roofing Flame Spread Burning Brand Apparatus
Compliance
UL 790, ASTM E108, NFPA 256, IEC 61730-2
The Roofing Flame Spread Burning Brand Apparatus is used for flame spread testing of roofing materials or photovoltaic modules exposed to the exterior of buildings and mounted on combustible or non-combustible substrates.
The test is divided into three classes depending on the exposed fire source.
Class A is a covering material capable of producing a high level of protection against roof substrates in severe fire situations, without collapse or flying flames during the test.
Class B is a cover material capable of producing a medium level of protection to the roof substrate under moderate fire conditions, with no collapse or flying fire during the test.
Class C is a cover material that provides a light level of protection in the event of a light fire and does not collapse or fly during the test.
Features
The framework is made of corrosion-resistant carbon steel welded together and coated with black corrosion-resistant paint for beauty and durability.
The sample holder is made of stainless steel with a non-combustible substrate mounted on the end to prevent tampering during testing.
Stainless steel scalloped adjustment plate with adjustable test angle and quick locking.
The front section of the sample holder is fitted with a non-combustible assembly that simulates eaves and cornices and extends the flame from the burner to the surface of the specimen.
The fan draws air steadily from the outside and creates a maximum wind speed of 8.0m/s on the sample surface.
The fan is controlled by a frequency converter with a feedback system which allows the required airspeed to be adjusted according to requirements
The air duct is made of stainless steel, which is corrosion and temperature resistant and can work under high air pressure for long periods of time
Ducts are fitted with adjustable turbulent sheets made of stainless steel to enhance air velocity and reduce turbulence.
A stainless steel honeycomb screen at the outlet of the duct and guide vanes at the gas inlet.
The anemometer is installed on the sample table to monitor the wind speed on the sample surface and feedback signals to the control system, the wind speed can be stabilized to 5.5m/s.
The burner is 1.12m long, 60.3mm in diameter with a 12.7mm wide, 0.91m long slit in the middle.
The gas system consists of a primary pressure reducing valve, a gas filter, a pressure gauge, a mass flow meter, and an anti-backfire device.
A gas flow rate controlled automatically by software, capable of providing a stable test flame of up to 387kWh
Equipped with an automatic electric spark ignition system with automatic software control of flame ignition and extinguishing.
Flame temperature calibration device with US Omega thermocouples for accurate flame temperature reading.
Flame temperature is adjustable to 760°C or 704°C according to demand.
Provision of a wood-burning gas burner with a flame that engulfs the wood and a flame temperature that can be stabilized at 880°C
The provision of metal mesh grilles which can support the material to facilitate adequate burning of the material
A DAQ data acquisition system with a data acquisition rate of up to 20 times/second.
Provision of a standard 19" cabinet with a touch screen computer fitted for ease of use by the operator.
Standard test software for reading equipment status, controlling air speed, air speed calibration, flame temperature calibration, routine tests, and direct output of test reports.