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RINGELMANN SMOKE CHART [1 record]

Record 1 2004-05-21

English

Subject field(s)
  • Environmental Studies and Analyses
DEF

A chart used in air pollution evaluation for assigning an arbitrary number, referred to as "smoke density", to smoke emanating from any source. This chart is designed specifically for the subjective estimation of the density of black smoke and is not applicable to other emissions. The observer compares the grayness of the smoke with a series of shade diagrams, formed by horizontal and vertical lines on a white background.

Key term(s)
  • Ringelmann's scale

French

Domaine(s)
  • Études et analyses environnementales
DEF

Carte de 13x9 cm portant 4 plages opaques, servant à déterminer l'opacité d'un panache de fumée par comparaison.

CONT

Primitivement, l'échelle de Ringelmann était réalisée sur un support de grandes dimensions et son emploi demandait deux opérateurs; on dispose actuellement de cartes d'environ 13x9 cm, comportant les quatre plages de nuances coupées par une fente. Le panache de fumée est observé à travers la fente, l'échelle étant tenue à bout de bras.

Spanish

Campo(s) temático(s)
  • Estudios y análisis del medio ambiente
DEF

Escala del gris dividida en cinco partes utilizada para la valoración óptica de penachos de humo.

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