Standard Test Method for Determining the Opacity of a Plume in the Outdoor Ambient Atmosphere


Importancia y uso:

5.1 Air permits from regulatory agencies often require measurements of opacity from stationary air pollution point sources in the outdoor ambient environment. Opacity has been visually measured by certified smoke readers in accordance with USEPA (USEPA Method 9). DCOT is also a method to determine plume opacity in the outdoor ambient environment.

5.2 The concept of DCOT was based on previous method development using Digital Still Cameras and field testing of those methods.7,8 The purpose of this standard is to set a minimum level of performance for products that use DCOT to determine plume opacity in ambient environments.

Subcomité:

D22.03.01

Volúmen:

11.07

Número ICS:

13.040.20 (Ambient atmospheres)

Palabras clave:

digital camera; digital image; digital still camera; opacity;

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Norma
D7520

Versión
16(2023)

Estatus
Active

Clasificación
Test Method

Fecha aprobación
2023-03-01