Modification of optical instruments for in-stack monitoring of particle size. Final report, September 1979-August 1980

Technical Report · Mon Jun 01 04:00:00 EDT 1981

OSTI ID:5481257

Wertheimer, A L

A light scattering instrument for in-situ measurements of particles in the 0.2 to 20 micrometer diameter size range is described, and field test results are presented. The instrument is a modified version of an earlier prototype. The upper limit of the size response has been extended from 10 to 20 micrometers, and several component and packaging changes have been incorporated to make the unit more suited to stack particulate emission survey applications. The completed instrument was tested at a coal-fired electric power generating facility. During the test a cascade impactor was used as a referee device and both instruments were run side by side in the outlet duct of the electrostatic precipitator. Results show an excellent correlation between the two instruments with regard to the identification of a 1 micrometers diameter peak in the particle size distribution. A second peak around 20 micrometers was defined by the optical instrument, but could not conclusively be confirmed through the impactor data. The optical instrument handled well during the field test.

• Research Organization: Leeds and Northrup Co., North Wales, PA (USA)
• OSTI ID: 5481257
• Report Number(s): PB-81-213373
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AIR POLLUTION MONITORS
COMBUSTION PRODUCTS
ELECTROSTATIC PRECIPITATORS
EQUIPMENT
FIELD TESTS
INDUSTRIAL WASTES
LIGHT SCATTERING
MEASURING INSTRUMENTS
MODIFICATIONS
MONITORING
MONITORS
OPTICAL EQUIPMENT
PARTICLE SIZE
POLLUTION
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
SCATTERING
SIZE
STACKS
TESTING
WASTES