27 Metre Cube Smoke Density Apparatus is used for measuring the emission when the cable or optical cable is placed horizontally under the definite fire condition. The equipment comprises a cubic enclosure and a photometric system.
The specified standard fire source (ethanol 90±1%, methanol 4±1% and distilled water 6±1%) 1L±0.01L is burned.
IEC 61034 - 1 & 2 Measurement of Smoke density of cables burning under defined condition
BS 6853 Code of practice for fire precautions in design and construction of passenger carrying trains
Chamber internal size is 3,000mm(W) × 3,000mm(D) × 3,000mm(H).
Its configured with a door with test glass windows and in both faces of the opposite side theres a sealed transparent window (minimum 100mmX100mm) .
Support system to allow separate fitting of Light Source and Photocell in the outer wall.
The Light Source is Dedolight Classic Series Tungsten with 100W.
The Dedolight Tungsten power supply is 12V DC.
Velocity of light : 2000 lm~3000 lm, and color temperature : 2800K~3200K.
The Receptor Photocell is silicone type and has a spectrum reaction conform to Photopic Observer (similar to a human eye) of the International Commission on Illumination (CIE).
Supplied with customised extraction facilities and all instrumentation, fans, stands and sample mounting frames.
Software shows testing results including the inner chamber temperature, light transmition etc.