Main Title |
Comparison of Opacity Measurements by Trained Observer and In-Stack Transmissometer. |
Author |
Conner, William D. ;
McElhoe, Harold B. ;
|
CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, NC. |
Year Published |
1982 |
Report Number |
EPA-600/J-82-282; |
Stock Number |
PB83-169714 |
Additional Subjects |
Particles ;
Chimneys ;
Air pollution ;
Opacity ;
Comparison ;
Sites ;
Sampling ;
Field tests ;
Visibility ;
Transmissometers ;
Reprints ;
Air pollution sampling
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB83-169714 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
6p |
Abstract |
Measurements of opacity of particulate emissions by trained observer and by instack transmissometer were compared on 26 different occasions at 17 different stacks and 13 different plants to see how well these two commonly used methods would agree when applied to real plants under field conditions. During the study opacities ranging from 2 percent to 57 percent were measured. In general, agreement of + or - 10 percent opacity may be expected between observer and transmissometer measurements when observer measurements are at the stack exit and ambient conditions permit good visibility of plume. |