TSI Instruments SIZER 3321 - Specifications of the Model 3321 Aerodyamic Particle Sizer; (APS) Spectrometer

D-1
A P P E N D I X D
Model 3321
Specifications
The following specifications—which are subject to change—list the most
important features of the Model 3321.
Table D-1
Specifications of the Model 3321 Aerodynamic Particle Sizer
®
(APS™) Spectrometer
Measurement technique .......................
The time-of-flight of individual particles is measured in an accelerating flow field.
Processing electronics measure the time-of-flight of the particle using a single
high-speed timing processor. Phantom particle rejection is achieved through the
use of a patent pending double crested optical system. The particle size binning
is based on an internally stored calibration curve.
Particle Type ........................................
Airborne solids and non-volatile liquids.
Particle Size Range ..............................
0.5 to 20 m aerodynamic size, 0.3 to 20 m optical size (PSL equivalent)
Maximum Particle Concentration ..........
1000 pt/cm
3
at 0.5 µm with less than 5% coincidence. 1,000 pt/cm
3
at 10.0 µm
with less than 10% coincidence. Usable data up to 10,000 pt/cm
3
.
Display Resolution ................................
32 channels per decade of particle size (logarithmic). This results in 52 channels
total. 1,024 bins of raw time-of-flight data (4 nsec per bin) in uncorrelated mode.
Resolution ............................................
0.02 m at 1.0 m diameter. 0.03 m at 10 m diameter.
Sampling Time .....................................
Programmable from 1 second to 18 hours.
Flow Rates ...........................................
Total flow: 5.0 L/min ±1%, Sheath flow 4.0 L/min ±1%, Aerosol Sample 1.0 L/min
±10% (feedback controlled).
Atmospheric Pressure Correction .........
Automatic correction between 400 and 1,030 mbar (full correction between 700
and 1,030 mbar).
Concentration Accuracy .......................
±10% of reading plus variation from counting statistics.
Operating Temperature ........................
10 to 40°C (50 to 104°F).
Operating Humidity ...............................
10 to 90% RH non-condensing.
Laser Source ........................................
30 mW, 655 nm laser diode.
Detector ................................................
Avalanche photodetector (APD).
Front Panel Display ..............................
320 by 240 pixels.
Power ...................................................
100 to 240 VAC, 50–60 Hz, 100 W, single phase or 24 VDC.
Communications ...................................
RS232 (9-pin) port, 7 bits, even parity, 9600:19200:38400 baud.
Outputs .................................................
Digital I/O: 15-pin port (3 input, 3 output). Analog and digital pulse: BNC.
Configurable analog: BNC.
Dimensions (HWD) ...............................
18 cm  30 cm  38 cm (7 in.  12 in. 15 in.)