Smoke Density Tester
is constructed using 14 gauge aluminum box, which is hinged a heat resistant glass glazed door. This box is mounted on the base which houses the controls. Dependent upon the materials tested, the metal may require protection from corrosion. From the same rod similar bezel is located below and it is support a square of asbestos paper which catches any particles that may drip from the specimen during the test.
- ASTM D: 2843
- The chamber is sealed except for 25 by 30 mm (1 by 9 in.) openings on the four sides of the bottom of the chamber.
- A liters/min specified capacity blower is mounted on one side of the chamber.
- The inlet duct to the bowler is equipped with a close fitting damper.
- The outlet of the bowler will be connected through a duct to the laboratory exhaust system.
- The two sides adjacent to the door are fitted with 70 mm (2/3in) diameter smoke tight glazed areas entered 480 mm (19/4 in.) above the base.
- At these locations and out side the chamber, boxes containing the optical equipment and additional controls are attached.
- A removable white plastic plate is attached to the back of the chamber.
- There is a clear area centered above the bottom of the chamber.
- Through which is seen an illuminated white on red exit sign.
- The white back ground permits observations of the flame, smoke, and burning characteristics of the materials.
- The viewing of the exit sign helps to correlate visibility and measured values.
- The specimen holder is supported on a square gauge.
- Stainless steel wire cloth above the base and equidistant from all sides of the chamber.
- This screen is lying in a stainless steel bezel supported by a rod through the right side of the chamber.