| Main Title |
A real-time measuring device for dense paritculate systems / |
| Author |
Chan, P. W., ;
She, C. Y. ;
Ho, C. W. ;
Tueton., A.
|
| Other Authors |
|
| CORP Author |
Colorado State Univ., Fort Collins.;Industrial Environmental Research Lab., Research Triangle Park, N.C. |
| Publisher |
Environmental Protection Agency, Office of Energy, Minerals, and Industry, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service, |
| Year Published |
1977 |
| Report Number |
EPA/600/2-77/022; EPA-R-803532; EPA/ROAP-21ADL-018 |
| Stock Number |
PB-268 550 |
| OCLC Number |
03741055 |
| ISBN |
pbk. |
| Subjects |
Air--Pollution--Measurement
|
| Additional Subjects |
Particle size distribution ;
Gas detectors ;
Air pollution ;
Aerosols ;
Gas analysis ;
Chemical analysis ;
Design criteria ;
Performance evaluation ;
Monitoring ;
Circuits ;
Mie scattering ;
Concentration(Composition) ;
Numerical analysis ;
Optical measuring instruments ;
Light scattering ;
Calibrating ;
Air pollution detection
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EKBD |
EPA-600/2-77-022 |
|
Research Triangle Park Library/RTP, NC |
09/07/2001 |
| ELBD ARCHIVE |
EPA 600-2-77-022 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ESAD |
EPA 600-2-77-022 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-268 550 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
vii, 59 pages : illustrations ; 28 cm. |
| Abstract |
The report describes the design and performance of an instrument, based on the concept of instantaneous intensity ratio, for measuring particle size distributions of dense particulate matter. The method involves simultaneously measuring the intensity of light scattered by a particle at two small angles, and then taking their ratio. The ratio depends on particle size, but has minimal dependence on refractive index. By using a pulse height analyzer as the display device, particle size distribution changes can be detected rapidly. Thus in situ, real-time monitoring of size distributions can be achieved. The instrument allows more than one particle in the focal volume at any instant and selects the scattered light pulses randomly for processing, enabling dense particulate matter to be sized accurately. The concept is discussed. The instrument's detailed design features are presented. Calibration has been performed using monodisperse aerosols of accurately known diameter. The effect of refractive index is investigated, and the performance and limitations of the instrument are discussed. It is shown that, by incorporating the concept of random selection of input pulses, the concentration handling capacity is improved by an order of magnitude. |
| Notes |
Prepared under grant no. R803532-01-0, ROAP no. 21ADL-018, program element no. 1ABO12. Issued Jan. 1977. Includes bibliographical references. |
| Place Published |
Research Triangle Park, N.C. Springfield, Va. |
| Access Notes |
Also available via World Wide Web. |
| Corporate Au Added Ent |
Industrial Environmental Research Laboratory (Research Triangle Park, N.C.) |
| Corp Au Ser Add Ent |
United States. Environmental Protection Agency. Environmental protection technology series ; EPA-600/2-77-022. |
| NTIS Title Notes |
Final rept. Jun 75-Aug 76. |
| PUB Date Free Form |
Jan 77 |
| Series Title Untraced |
Environmental protection technology series ; EPA-600/2-77-022 |
| Category Codes |
14B; 99A; 68A |
| NTIS Prices |
PC A04/MF A01 |
| Primary Description |
600/13 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| Control Number |
323719703 |
| OCLC Time Stamp |
20140403120043 |
| Language |
eng |
| SUDOCS Number |
EP 1.23/2:600/2-77-022 |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01593cam 2200337Ii 45020 |
