KP8007 cable smoke density tester
Conform to the standards: GB/T17651.1 ~ 2-1998, IEC61034-1 ~ 2, the 6853 BS, BS 6724, BS 7622
GB/T17651.1 ~ 2-1998, IEC61034-1 ~ 2 the cable and optical cable under certain conditions of combustion smoke density measurement ", GB/T19666 ‐ 2005 "general principles of the flame-retardant and fire-resistant wire and cable standards given in table 7.
GA306.1 ‐ 2007:6.3.3, GA306.2 ‐ 2007:6.3.3 flame-retardant and fire-resistant cables, plastic insulated flame-retardant and fire-resistant cable classification and requirements.
Products are widely used in determination of cable and cable released under certain conditions when burning smoke concentration.
2, combustion chamber inside: (size: 3 m x 3 m x 3 m, a total of 27 cubic meters. For the brick structure, can also be used for steel structure, the selection by the customer)
2.1, thick 1.5 mm adopts SUS304 stainless steel on the Angle bracket, constitute the whole cube combustion chamber.
2.2, size: 3 mx3mx3m
2.3, structure: positive with glass observation window, on both sides of the relative of a transparent seal window on the wall, the size is: 100 mmx100mm, let level measuring device beam through the light, window seal of the center distance of the ground height is 2150 mm. Have several open at the bottom of the vent and vent to 100 x500mm (50 square centimeters)
2.4, the bottom is equipped with six and six castor wheels
2.5 equipped with exhaust fan on top.
Third, optical measurement system
3.1, light source: import quartz halogen lamps, nominal power: 100 w nominal voltage: 12 v nominal return amount of light: 2000-3000 lm
3.2, the receiver:
A, silicon photocell, the spectral response and international illumination (CIE) metering instrument of the match.
B, installation: installed in the pipe end of the length of 150, on the other side window for dustproof, pipe wall for gloss black, antireflection.
C, 0% light transmittance through light, 100% light transmittance of light shining through.
Four, standard fire:
Configuration: 4.1, fire 1.0 L alcohol 90%, water 6% 90% ethanol, methanol
4.2, alcohol disc (combustion boat) : stainless steel 1.0 mm thick, bottom: 210 x110mm, top: 240 x140mm, height 80 mm,
4.3, installation location: alcohol disk set distance and height is 100 mm from the ground, make the air circulation.
Five, a mixture of smoke:
Use desktop fan to make the smoke in the combustion chamber is uniformly distributed. Fan shaft height distance 250 mm, 500 mm wall, air volume 7 cubic meters per minute. Level by the fan blows air during the test.
Six, blank test:
Purpose is to regulate the combustion chamber temperature, burning alcohol lamp to the temperature of the combustion chamber: 25 + / - 5 ℃.
Seven, temperature measuring device:
Inside surface is high from the ground 1.5 M, 0.5 M away from the wall, is equipped with temperature sensors. Monitoring the temperature of the laboratory.
Software is a set of eight, including light transmittance measurement, can output curves and reports.
Nine, each one containing brand computers and printers
Ten, including stainless steel exhaust system. Using strong exhaust and switch control.
11, put the instrument laboratory suggest reserve size: 4.5 Mx 4 Mx 6 m long
Twelve, lab room temperature requirement: 25 + / - 5 ℃
3, the principle of
Cable or optical cable in certain conditions of combustion smoke density measuring system is composed of light source, silicon photocell of receiver and computer system. Light source of light by 3 m x 3 m x 3 m of smoke
Laboratory, in the wall opposite the light source to form a diameter of 1.5 m + 0.1 m of the uniform beam, photovoltaic cells installed in the center of the beam in the detection of light from a light source intensity. When combustion chamber due to the burning cable or optical cable to produce a lot of smoke, the smoke of photoelectric absorption, achieves the silicon photocell beam intensity is abate, through the computer system for data processing, will be able to calculate the relative to the initial with linear response to light transmittance was 100% when the It.
