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Smoke-Density

Smoke Density (as per ASTM)


Model Number: SSI 516 SDAS

Standard Number: ASTM 2843, IS 13660 (Part 6/Sec9)

Smoke Density Apparatus is used for measuring & observing the relative amount (Density) of smoke produced by the burning (combustion) or decomposition of Plastic, Cables etc. under controlled conditions.

 

Salient Features  
   
Chamber Size :  300 mm x 300 mm x 790 mm
Chamber Construction :  Single Walled made of 14 gauge Aluminum Sheet, powder coated on both sides
Burner :  Specially Designed capable to work on 40 psi gas pressure
Sample Stand :  Designed to hold 25 x 25 x 4 mm Sample securely throughout the test
Light Source :  6 V DC Bulb
Power Source :  Stabilized DC power source to produce 5-7 V DC, adjustable
Photo Receptor :  Highly Sensitive Photo metric Cell to determine even small change in light intensity
   
Power Requirement  : Less than 1 KW
Voltage : Single Phase , 220V AC, 50 Hz (Model with 110 V, 60 Hz also available on request)
Delivery  : 4 to 6 Weeks
Packing  : One Wooden Box
 .  
Alternate Model : SSI 516 SDASH (with HMI display and PLC control)

Description

Instrument Principle

Smoke Density Test Apparatus is used for measuring & observing the relative amount (Density) of smoke produced by the burning (combustion) or decomposition of Plastic, Cables etc. under controlled conditions.

In Smoke Density Test Apparatus, the sample is burned under controlled pressure of LPG, through a specified burner as per the standard. A light source and a photo receptor is placed on either side of the chamber, and the percentage of light absorbed is displayed through a linear amplifier digital electronic photometer with 0 to 100% absorbance scale. The Smoke Density Test apparatus comes complete with timer with 1.5-second pulse at every 15 sec, with hold facility, gas pressure gauge, damper and exhaust fan for removing smoke from the chamber.

Standard

The instrument is manufactured as per the ASTM D 2843, IS 13360 (Part 6/ Sec 9) etc.

Instrument

The Smoke Density Test Apparatus instrument comprises of

     Single Walled glass door chamber made of 14 gauge Aluminum
     Burner, gas regular
     Electronic Photometric System
     Timer
     Specimen Holder
     Damper
     Exhaust fan

The Sample is burned using ASTM specified burner under control conditions. A Light source (6 V DC Bulb) emits light which is captured by Photocell which converts the light into Voltage. The intensity of light is proportional to the voltage produced. This voltage is picked up by sophisticated electronic detector, which display the same as % Absorption. As the smoke fills the chamber, the light intensity is reduced, reducing the voltage and the % absorption increase.

The operator records the absorption reading every 15 Sec in a 4 min test, and evaluates the sample on the criteria given in the standard.