Record Display for the EPA National Library Catalog
RECORD NUMBER: 517 OF 680
|OLS Field Name||OLS Field Data|
|Main Title||Procedures for Evaluating the Photopic Response of the Visible Emission Training School Transmissometer.|
|CORP Author||PEDCo-Environmental, Inc., Cincinnati, OH.;Environmental Monitoring and Support Lab., Research Triangle Park, NC.|
|Report Number||EPA-68-02-3767; EPA-600/4-84-047;|
|Additional Subjects||Air pollution ; Transmissometers ; Smoke generators ; Performance evaluation ; Responses ; Light(Visible radiation) ; Light transmission ; Field tests ; Laboratory equipment ; Design criteria ; Calibrating ; Opacity ; Air pollution detection ; EPA method 9 ; Stationary sources ; Procedures|
The basic concept of photopic response is a major factor in the design of the smoke generator transmissometer used at visible emission training schools. The term 'photopic' refers to having the daylight spatial response characteristics of the human eye. This study evaluated three transmissometer systems, the reference daylight-photopic system, the tungsten-photopic system, and the tungsten-near-photopic system, to determine whether these three systems had significantly different response characteristics. In addition, a simple procedure was developed for checking the photopic response of transmissometer systems. Results are discussed.