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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.
Year Published 1984
Report Number EPA-68-02-3767; EPA-600/4-84-047;
Stock Number PB84-200674
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
Library Call Number Additional Info Location Last
NTIS  PB84-200674 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 60p
Abstract 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.
NTIS Title Notes Final rept.
PUB Date Free Form Jun 84
Category Codes 14B; 68A; 99A
NTIS Prices PC A04/MF A01
Primary Description 600/08
Document Type NT
Cataloging Source NTIS/MT
Control Number 425821337
Origin NTIS
Type CAT