|
 
The DustScan Scout
Model 3020 Aerosol Monitor is a flexible tool for surveying
particle loadings in real time. The monitor bases its particle trending
information upon the degree to which dust in a sample stream of
ambient air causes a beam of light to scatter. Advantages of this
type of tool are its portability, battery operation, and real-time
response.
Tokyo Dylec Corporation conducted a series of runs in the second
half of 2001 in Tokyo, Japan, using the monitor to indicate particle
loadings. The tests were conducted by measuring the PM concentration
in a car as it followed a predetermined course through Tokyo. The
surveying took place during the same time of day on a Friday morning
in August (17 August) and a Friday morning in October (5 October).
Due to differences in traffic patterns and meteorology, the particulate
loadings showed very different patterns on the two days.
The following map indicates the course that the survey car took
in the central part of Tokyo, Japan.
The graphs below show the particle loadings over the identical test
route on 17 August and 5 October 2001.
|
DustScan Scout Monitor Surveys Tokyo 
