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C H A P T E R 1
P r o d u c t O v e r v i e w
This chapter contains a product description of the Model 3321
Aerodynamic Particle Sizer
®
(APS
™
) spectrometer and a brief description
of how the instrument operates.
P r o d u c t D e s c r i p t i o n
The Model 3321 APS
™
spectrometer, shown in Figure 1-1, is a high-
performance, general-purpose particle spectrometer that measures both
aerodynamic diameter and light-scattering intensity. The Model 3321
provides accurate count size distributions for particles with aerodynamic
diameters from 0.5 to 20 micrometers (
m). It detects light-scattering
intensity for particles from 0.3 to 20
m.
For setup and initial sampling, the Model 3321 can be operated without a
computer. To save, interpret, or print data, however, it must be connected
to a computer or some other data collection system. The Aerosol
Instrument Manager
®
software with Model 3321 Module is included with the
sensor to provide computer controlled operation and data interpretation.
The Model 3321 includes an LCD display and control knob. The control
knob is a rotary, push-button encoder that gives you an easy way to scan
through data on the LCD Display as well as to display and change settings.
Using the control knob you can select functions and read operating
parameters from a menu displayed on the screen. Functions include start,
stop, and length of measurement; parameters include inlet pressure, flow
rate, and temperature. During the sampling process, the size distribution is
shown on-screen in real time. You can also use the control knob to focus
on a specific channel of the sensor and obtain detailed information about
the concentration, particle size, and total particle count
Five LEDs on the front panel provide a visual indication of the status of
important sensor functions.
Содержание SIZER 3321
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