Smoke density test chamber SDB

international standards-compliantfor the aeronautical industrystainless steel

Compliance ISO 5659-2, ASTM E662, NES 711, BS 6401, JIS K 7242-2 The NBS Smoke Density Chamber is considered to be one of the most widely used test equipment for the measurement of the smoke generated from the burning material, such as building material, non-metallic material in railway, marine, and the airplane. The NBS Smoke Density Test is intended primarily for use in research and development and fire safety engineering in buildings, trains, ships, etc., and not as a basis for ratings for building codes or other purposes. No basis is provided for predicting the density of smoke that might be generated by the materials upon exposure to heat and flame under other (actual) exposure conditions. The following data can be reported by the smoke density test: • Specific optical density, Dsmax, Ds10, Ds1.5, Ds4.0. • Clear-beam correction factor Dc. • VOF4. • Results derived from different standards. NBS Smoke Density Chamber consists of • Thick stainless steel made test chamber, with the inner size of 914mm by 914mm by 610mm. • The inner surface of NBS chamber is coated with Teflon, which resists chemical attack and corrosion and is easy to cleanse. • Full opening door allows easy access for sample loading and chamber cleansing. • The door with an observation window and a removed opaque door cover to the window to prevent light entering into the chamber. • Chamber walls are pre-heated for easier start-up and convenient equipment operation. • A safety device to prevent explosion, easily replaceable, allows for the safe operation of the test method. • Two optical windows, each with a diameter of 75mm, are mounted in the top and bottom of the chamber.