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RECORD NUMBER: 30 OF 1428

Main Title A real-time measuring device for dense paritculate systems /
Author Chan, P. W.; She, C. Y.; Ho, C. W.; Tueton., A.;
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,
Place Published Research Triangle Park, N.C. Springfield, Va.
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
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
Subject Added Ent Air--Pollution--Measurement.; Air--Pollution--Measurement.
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=910169L0.txt
Holdings
Library   Call Number Additional Info Location Date Modified
EJAD EPA 600/2-77-022 Region 3 Library/Philadelphia, PA 06/16/2000
EJBD ARCHIVE EPA 600-2-77-022 Headquarters Library/Washington,DC 04/10/2014
EKAM EPA-600/2-77-022 Region 4 Library/Atlanta,GA 11/20/1998
EKBD EPA-600/2-77-022 Research Triangle Park Library/RTP, NC 09/07/2001
EOAD EPA-600/2-77-022 Region 8 Technical Library/Denver,CO 05/10/2010
ESAD EPA 600-2-77-022 Region 10 Library/Seattle,WA 03/23/2010
NTIS PB-268 550 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation vii, 59 p. : ill. ; 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.
Access Notes Also available via World Wide Web.
Author Added Ent
Chan, P. W.
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
ISBN pbk.
Control Number 323719703
OCLC Time Stamp 20140403120043
Cataloging Source OCLC/T
Language eng
SUDOCS Number EP 1.23/2:600/2-77-022
Origin OCLC
Type MERGE
OCLC Rec Leader 01593cam 2200337Ii 45020


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