Skyline Instruments Co.,LTD
Skyline Instruments Co.,LTD
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NBS Smoke Density Chamber Tester
Standards
According to GB8323 and NBS ENS711 of ASTM E662 etc.
Used range
This tester has been applied to determine smoke density and wildly accepted by many industries, such as plastics, rubbers, cover fabrics, painted surfaces, woods, etc.
Test conditions
According to difference material for Flaming test and non-flaming both conditions
| Temperature of sample | 23±2°C |
| Relative humidity | 50±5℅ |
| Size of sample | Length and width of sample all are 75±0.5mm, thickness is 1±0.2mm, thickness of foam and plastic is 8±0.5mm |
| Irradiance level of furnace | Surface of sample is 2.5±0.05W/cm² |
| Distance between the furnace and sample surface | 38mm |
| Burning gas | Propane gas and the purity ≥95 |
| Measurement of chamber | L1110mm * W750mm * H2040mm |
| Smoke box size | L914mm * W610mm * H914mm |
| Diameter of light beam | Approx. 38mm |
| Test range | 1) Optical transparence is 100%-0.00001% 2) Smoke density grade is 0-924 for 6 shelves, automatic transmission |
| Test mode | Non-flaming mode and flaming mode |
| Accuracy of photometer | ±3% |
| Exchange shelves accuracy | ±7 for smoke density value |
| Power supply | 3-phase is 380±10%V/AC, 50Hz |
