| Main Title |
Particle detector by mechanical impact sensing / |
| Author |
Benarie, Michel M. ;
Quetier., Jean-Pierre
|
| Other Authors |
|
| CORP Author |
Institut National de Recherche Chimique Appliquee, Paris (France).;National Environmental Research Center, Research Triangle Park, N.C. Chemistry and Physics Lab. |
| Publisher |
[Environmental Protection Agency], |
| Year Published |
1975 |
| Report Number |
EPA-600/2-75-025; EPA-R-802424; EPA-ROAP-26AAM |
| Stock Number |
PB-247 212 |
| OCLC Number |
52499888 |
| Additional Subjects |
Aerosols ;
Air pollution ;
Particles ;
Detectors ;
Impactors ;
Particle size ;
Aerosols ;
Measuring instruments ;
Instrumentation ;
Monitors ;
Counters ;
Atmospheres ;
France ;
Air pollution detection ;
Particulates ;
Particle counters
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EKBD |
EPA-600/2-75-025 |
|
Research Triangle Park Library/RTP, NC |
06/27/2003 |
| NTIS |
PB-247 212 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
ix, 67 pages : illustrations ; 28 cm |
| Abstract |
Particulate impact has been used for the detection and measurement of raindrops and micrometeorites for several decades. Aerosols might be detected in the same way if the suspension is expanded rapidly when it enters through a capillary in a nearly evacuated vessel. If the accelerating capillary is relatively long and the pressure inside the vessel below 1 torr, particulate beams are obtained. They enable the study of particle velocities, their rebound properties, etc. For particulate beam conditions, impact sensing is mass concentration proportional, grain size and substance independent, and sensitivity may rate from the detection of single particle to the range of mg/(m cubed). With short nozzles and chamber pressure above 1 torr, impact sensing remains possible but marked grain size dependence and possible substance dependence complicate the phenomenon. |
| Notes |
Project Officer: John S. Nader. Institut Nat'l de Recherche Chimique Appliquee Contract Number: Grant No. 802424 "June 1975." "EPA-600/2-75-025." "ROAP No. 26AAM-36, Program Element No. 1AA010." Includes bibliographical references. For sale by the National Technical Information Service, (Price upon application). 4to. |
