| Main Title |
Multiwavelength transmissometer for measuring mass concentration of particulate emissions / |
| Author |
Reisman, Eli.
|
| CORP Author |
Ford Aerospace and Communications Corp., Newport Beach, CA. Aeronutronic Div.;Environmental Sciences Research Lab., Research Triangle Park, NC. |
| Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory, |
| Year Published |
1979 |
| Report Number |
EPA-600-2-79-022; EPA-68-02-2206 |
| Stock Number |
PB-292 108 |
| OCLC Number |
42638047 |
| Subjects |
Fly ash--Measurement ;
Particle size determination ;
Air--Pollution--Measurement--Equipment and supplies ;
Flue dust--Measurement
|
| Additional Subjects |
Air pollution ;
Particles ;
Weight(Mass) ;
Transmissometers ;
Design criteria ;
Flue gases ;
Chimneys ;
Concentration(Composition) ;
Monitoring ;
Performance evaluation ;
Gas detectors ;
Computer aided analysis
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EHAM |
EPA-600-2-79-022 |
|
Region 1 Library/Boston,MA |
05/25/2016 |
| EJBD |
EPA 600-2-79-022 |
c.1 |
Headquarters Library/Washington,DC |
01/14/2014 |
| EKBD |
EPA-600/2-79-022 |
|
Research Triangle Park Library/RTP, NC |
06/27/2003 |
| ELBD ARCHIVE |
EPA 600-2-79-022 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ESAD |
EPA 600-2-79-022 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-292 108 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
vii, 55 pages : illustrations ; 28 cm. |
| Abstract |
A multiwavelength transmissometer potentially capable of making near-real-time measurements of particulate mass concentration in industrial stacks was developed. A computer program is employed to interpret the transmissometer data and translate the results into mass concentration. The transmissometer uses four different wavelengths and records the opacity of the particulate emissions at each wavelength. Since the response at each wavelength depends on the size of the particles, the relative values of opacity provide the computer with information on particle sizes. If the computer is also given the wavelength dependence of the optical indices of refraction and guidelines as to the most probable distribution forms, the computer can adjust the mean and spread of the distribution to find a best fit to the experimental data. It then uses this information to compute the mass concentration. The theory behind the measurement technique, a laboratory demonstration of the technique, and the optical and electrical design of the instrument are discussed. |
| Notes |
"EPA-600/2-79-022." EPA contract no. 68-02-2209; EPA project officer: William D. Conner. Includes bibliographical references (page 54). |
