DONGGUAN DAXIAN INSTRUMENT EQUIPMENT CO.,LTD
Dongguan Daxian Instrument Equipment Co.,Ltd. CHINA'S LEADER IN TESTING EQUIPMENT Professional Manufacturer of Building Materials 13 years Fire Retardant / Wire/ Plastics/ Rubber/ Environmental
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ASTME84 Standard Scope:
The ASTM E84 Standard Test Method for Surface Burning Characteristics of Building Materials is one of the building codes' most frequently specified standard test methods. Test and evaluate your building product for compliance with building code requirements with ICC NTA.
ASTM E84 standard applicable products:
Building materials, wallpaper, insulation materials, panel products, paints, adhesives, sealants and coatings, interior decoration.
ASTI E84 fire rating classification:
ASTM E84 Class is 0-25 mesh smoke index not exceeding 450.
ASTM E84 Class B is 26-75 day smoke index not exceeding 450.
ASTM E84 Class C 76-200 day smoke index not exceeding 450.
ASTm E84 test method for surface burning characteristics of building materials:
1.ATM E84 test is carried out by placing a 24-inch wide x 24-foot long sample into Stan's tunnel, where the test is carried out by using two burners that provide 89 energy. During the 10-minute test, the sample is installed under a removable cover on the ceiling and forced ventilation is provided so that air and combustion products move in the tunnel and enter the exhaust/scrubber system.
2. The fire spread index (RS1) is calculated based on the data recorded by the window of the ventilation room, and the computer software records the flame spread curve during the test (0 minutes). The flame spread curve is calculated based on the data recorded by the photometer system. The photometer system consists of a light source, a photoelectric tube and a special electronic device. The light passes through the ventilation room, and the computer software records the light obstruction when the light passes through the beam path during the test. The smoke area under the smoke curve is used to calculate the smoke generation index.
4: Flame propagation refers to the development of flames on the surface of materials. It is related to the fire signal and the combustible material to expand the fire. The flame propagation performance is often tested by enzyme method and radiation plate method. This ASTHE84: method is used to determine the flame propagation rate of building materials (determination of field concentration), according to ASTMB84.
The equipment used in the ASTIE84 tunnel method is a steel trough lined with refractory bricks with a length of 7.62m and an open end cross-section of 0.45m*0.30m, with windows on the side of the trough.
1. Two station lift at the same time. Computer control ensures smooth lifting.
2. Suspension Hardware can be moved up and down,left and right which is convenient for sample installation and commissioning.
3. Equipped with safety protection platform, convenient for sample installation and commissioning.
1.The 10kV spark igniter is equipped with a safety cease-fire device.The igniter is automatically positioned through the lever connected to the closing mechanism.
2.The combustion heat of the burner is automatically controlled by the gas flow system. The reading accuracy is 1%.
3.The heat output of the burner can be automatically controlled by computer. Equipped with Japanese mass flow controller.
4.Gas flow valve control system to avoid leakage caused by electromagnetic valve failure, resulting in explosion risk.
5.Frequency fan automatically controls wind speed inside the flue, fan power 3KW, voltage 380V
6.Gas pressure gauge and pressure regulating valve to control gas pressure accurately.
7.The Steiner Tunnel Test Furnace adopts imported gas flow control valve to control gas flow accurately
1.Smoke Density Test:smoke density is measured by incandescent light system.Color temperature 2900±100K;The current fluctuation range is + 0.5%;Linear output of smoke density value;With time compensation function.
2.The lens converts light into 20mm parallel beams; d/f < 0.04.
3.Detector:The spectral distribution corresponds to CIE;The accuracy of the chromatic standard function is + 5%;Thelinearity of output is less than 3% of transmittance or 1% of absolute transmittance.;The response time of system 90% is no more than 3S
4.The thermocouple is K type armored thermocouple, 0.5mm diameter; the temperature accuracy is 0.5 degrees.
5.Pressure sensor range 0~100pa; accuracy is + 2pad;The response time of pressure sensor 90% is 1s.
6.Environmental pressure accuracy of + 200Pa
7.System record time is at least 3S
8.System time recording accuracy 0.1s
9.Computer real-time display of smoke density generation curve
10.Option:The system is equipped with a camera system to observe the experimental process and record the characteristics of the burner residue after the implementation and combustion of the sample.
Related equipment:
| Equipment name | ASTME 84 Steiner Tunnel Testing Machine |
| standard | ASTME 84 |
| sample | foam and other lab building materials |