Radiant Panel Flame Spread Apparatus

Description

ASTM E162 is one most widely used test standard to evaluate the propagation properties  of material in USA. The heat resource use gas radiant panel heating and a gas burner ignited. This method is widely used in flame propagation properties of the test material for rail train material to evaluate flame retardant based on the standard NFPA 130. like evaluation train interior panels, ceilings, sound insulation, windows, lintels, seat side panels and other components performance.

This machine is designed according to ASTM E162 and ASTM D 3675 standards; The device implements test methods to assess combustion properties of the material surface flaming.

During the test, the specimen is exposed to a radiation source and medium-sized burner plate up to 15min, after ignition the sample, record the time of flame front reaches the reference mark. Test, and also record the flue gases released and the smoke production and burning droplets.

Test Principle and Method

The basic principle of the radiant panel flame spread test is to expose a sample to a clearly calibrated radiant flux and measure the ignition time, flame spread, and final extinction time.

During the test, the sample is typically placed in a vertical position adjacent to the radiant panel, exposed to the clearly calibrated radiant flux. The pilot flame approaches the test sample but does not contact it, igniting the heated end of the sample by vaporized gases on the surface.

After ignition, the development of the flame front is recorded, along with the time it takes for the flame front to burn horizontally across the sample surface to reach various calibrated distances. Depending on the standard, the test may terminate when the sample burns to a specified mark, after 15 minutes, or when the temperature in the fume hood stabilizes.

Features

• The frame structure is made of stainless steel; beautiful and corrosion-resistant;

• The reflector is made of a cast iron frame. The surface of the reflector is made of porous fireproof material with a size of 305X457mm. The working temperature is 815 ºC.

• The filter is equipped with a fan to supply air to the reflector.

• The device has a pilot light, electronic ignition, automatic flameout safety monitoring device

• There is an observation point every 3 inches on the stainless steel sample holder for observing the progress of the flame front.

• The pyrometer can measure the surface temperature of the radiation plate, including the bracket. The temperature can reach 815 ºC.

• Stainless steel sample holder and pilot burner device.

• Air flow meter, gas control valve to control the mixing of gas sent into the radiant panel;

• The stainless steel exhaust pipe has a detachable part, which is convenient for cleaning the thermocouple. The exhaust pipe is equipped with 8 thermocouples according to the standard.

• The calibrated burner has 1.8mm holes in 16 different angles and needs to be along the centerline.

• To control the surface temperature of the reflector, the blackbody temperature of 180 ° C ~ 230 ° C needs to be set to an accuracy of ± 5 ° C. It is suitable for observing the surface temperature of a reflector with a surface radius of 250MM outside 2M.

• An insulated thermocouple is attached to measure the temperature of the stack.

• Imported heat flow meter (round foil type) to test the heat radiation condition of the radiation plate (0 ~ 100kW / m2).

• DAQ system can realize automatic control and measurement.

• Gas safety control and circuit cut-off device.

Control System

1. Independent electrical control cabinet.

2. Standard control cabinet, computer + Labview intelligent control system.

3. Intelligent system test and easy operation.

4. Imported gas flow meter to accurately control gas flow.

5. Automatic radiation calibration, automatic control of experimental radiation.

6. The flow of the exhaust fan is 0.5m / s.

7. Experimental data is automatically saved and can be printed freely.