BSI - BS 2742
Notes of the use of Ringelmann and miniature smoke charts. The calibration of instruments in Ringelmann number
inactive
| Organization: | BSI |
| Publication Date: | 27 June 1972 |
| Status: | inactive |
| Page Count: | 8 |
| ICS Code (Chimneys, shafts, ducts): | 91.060.40 |
| ICS Code (Stationary source emissions): | 13.040.40 |
scope:
Provides a relationship for the conversion of measurements of optical density of smoke to 'standard' Ringelmann numbers.
Document History
May 31, 2009
Use of the Ringelmann and miniature smoke charts
A description is not available for this item.
BS 2742
June 27, 1972
Notes of the use of Ringelmann and miniature smoke charts. The calibration of instruments in Ringelmann number
Provides a relationship for the conversion of measurements of optical density of smoke to 'standard' Ringelmann numbers.
November 1, 1967
Use of the Ringelmann and Miniature Smoke Charts
Explains the purpose and method of use of these charts for the visual assessment of the darkness of smoke emitted from chimneys.
References
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