NBS Smoke Density Chamber


The NBS Smoke Density Chamber is widely used in all industrial sectors for the determination of smoke generated by solid materials and assemblies mounted in the vertical orientation within a closed chamber.


It measures the specific optical density of smoke generated by materials when an essentially flat specimen, up to 25 mm thick, is exposed to a radiant heat source of 25 kW/m2


, in a closed chamber, with or without the use of a pilot flame.The radiant heat


source can be easily replaced with the Conical Radiant Furnace for testing of specimens in the horizontal orientation according to ISO 5659 and IMO FTP Part 2 requirements.


ASTM E 662 Standard test method for specific optical density of smoke generated by solid materials


BS 6401 Method for measurement, in the laboratory, of the specific optical density of smoke generated by materials


NFPA 258 Recommended practice for determining smoke generation of solid materials


And options for:


ISO 5659 Plastics Smoke generation. Determination of optical density by a single chamber test


IMO FTP Part 2 Smoke and toxicity test


ABD0031 (ATS 1000.001) for smoke emission for non-metallic components


NES 711 Determination of smoke index


Features of the FTT NBS Smoke Density Chamber (SDC)


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Test chamber with full width opening door, allowing easy access for sample loading and chamber cleaning.


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Photomultiplier control unit with manual zero and span controls designed to be used with the FTT software to perform automatic control of the test procedure on the SDC


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Controls are mounted beside the chamber for convenient operation. They are not obstructed when the door is open.


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Three term temperature controller for radiant heat source with digital display.


Chamber walls are pre-heated for easier start-up and convenient equipment operation.


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