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[China]
Trade Verify
Address: Hi-tech Developing Industrial Area, Liuyang City,Changsha,Hunan Province,China
Contact name:Sandy
Advanced Instruments Co.,Limited |
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Verified Suppliers
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The Smoke Density Test Chamber has proved to be one of the most versatile fire testing instruments since its inception in the 1980s. It is the most widely accepted apparatus for the measurement of smoke from burning materials and measures specific optical density under flaming and non-flaming conditions. It is also used for the extraction of toxic gas.
Structure of Chamber
1, The NBS Smoke Density Test Machine is consist of cabinet, sample case, the radiation cone, ignition, light and measuring devices and other relevant control device component;
Combustion System
1, The heating cone: Power 2600W, input temperature range of 0 ~
1000 ºC, can be stable within ± 2 ºC within 50 minutes, providing
irradiance 10KW / m²-50KW / m².
2, The use of mass flow controllers and differential pressure
sensor can improve the accuracy of piezometers and automatic leak
test.
3, Ignition with automatic ignition devices; flame length 30mm±5mm;
in accordance with standards prescribed blue flame with a yellow
tip.
Smoke density measurement system
1, Smoke density and temperature are digital display, viewing more
convenient, more accurate values.
2, Photodetector assembly includes a photomultiplier, amplified
filters, shutters, filters, neutral density filter, a lens, an
optical window, and other components.
3, The light source is 6.5V incandescent light sources.
4, The installation of optical cartridge box at the top, light
accepted as side-on photomultiplier, light transmission rate of
0.001% accuracy can be achieved.
5, Achromatic lens is provided with ASTM E662 Smoke density test
equipment.
6, ISO 5659-2 Smoke Box adopts Japan imported Photomultiplier
tubes.
7, High-gain low-noise amplifier control circuit.
Technical Specification
1, Light transmittance measurement range: 0 ~ 100%; Resolution is
0.00001%;
2, Accuracy of measurement is less than ± 2.5%;
3, Light 6.5 V incandescent light; 2200+100k color temperature
incandescent lamp;
4, Optical system for transmittance as linear response, measuring
at least accuracy + / - 3%;
5, Photomultiplier tube filled with partial data acquisition
precision 0.5%;
6, Heater input temperature 0 ºC ~ 1000 ºC, accuracy of plus or
minus 2 ºC;
7, Import K type armoured thermocouple accuracy of 0.1 ºC;
8, Mouth thermopile type heat flow meter range is 0 ~ 80 kw/m2; The
thermopile type heat flow meter, heat meter accuracy is 1%,
repeatability and 0.5%;
9, Propane gas flow meter range: 0 ~ 100 ml/min. Minimum pressure
of 3.5 kPa plus or minus 1 kPa;
10, Air flow meter range: 0 ~ 1000 ml/min.
11, Fan provides the negative pressure in the cabinet at least 0.5
kPa;
12, Enclosure bear greater than the atmospheric pressure at least
1.5 kPa;
13, Water pressure gauge 1.5 kPa (150 mm water column);
14, Wall temperature measurement range: 0 ~ 100ºC±1ºC;
15, Window heater power 9 W;
16, Test the pressure inside the warehouse scope: < 1.5 kPa;
17, Radiation power range: 0 ~ 50 kW/m2.
