Record Display for the EPA National Library Catalog


Main Title Development of a Charged Grid Sensor for Airborne Carbon Fibers.
Author Salmirs, S. ; Schrader, J. ; Butterfield, A. ;
CORP Author Bionetics Corp., Hampton, VA.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-68-02-3272; EPA-600/3-82-086;
Stock Number PB83-116848
Additional Subjects Carbon fibers ; Measuring instruments ; Air pollution ; Electric power transmission ; Sensors ; Industrial wastes ; Combustion products ; Forecasting ; Design criteria ; Performance evaluation ; Field tests ; Stationary sources
Library Call Number Additional Info Location Last
NTIS  PB83-116848 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 54p
This development addressed the sensing and measurement of carbon fibers moving in ventilating ducts or the exhaust stacks of incinerators. The sensor system utilizes a series of 5 electrically charged grids with different grid spacings to sense the fibers, make determinations of their length, and present a count of the numbers detected. The system will sense carbon fibers shorter than 0.1 mm moving at velocities from 2 to 4 meters per second. In addition, the system will measure fiber populations up to 100 fibers/cu meter in each of 5 lengths ranging from 0.1 to 1.5 mm. The areas which require further development have been identified together with a list of design requirements and alternate materials or fabrication techniques applicable to producing a unit for evaluation in a field test. A companion development produced a mobile flow test facility for evaluating and calibrating instrumentation which measures fibrous aerosols.