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3321 particle size spectrometer
The 3321 Aerodynamic Particle Size Spectrometer (APS3321) is a high-performance, multi-purpose next-generation particle measurement instrument
Product details
Product Overview of Particle Size Spectrometer:

The 3321 Aerodynamic Particle Size Spectrometer (APS3321) is a high-performance, multi-purpose next-generation particle measurement instrument with a unique design that can simultaneously measure the following two properties:
Aerodynamic particle size: APS3321 can measure the aerodynamic particle size of particles in real-time through precise time-of-flight (TOF) technology, with a particle size measurement range of 0.5-20 μ m. Due to the fact that the aerodynamic particle size counting based on flight time is only related to particle shape, it avoids the interference of refractive index and meter scattering. Therefore, the instrument has better measurement performance for particle size than similar optical scattering instruments. In addition, the monotonic corresponding curve of time-of-flight particle size measurement ensures high resolution throughout the entire particle size measurement range.
Optical scattering intensity: Through optical scattering measurement technology, the measured particle size of APS3321 can reach 0.37-20 μ m. Although optical scattering intensity is not always a reliable characterization parameter for particle size, it is still an interesting parameter for people. APS3321 can provide data on the aerodynamic particle size and optical scattering intensity of the same particle separately and store them separately. Particle size spectrometer

Detection technology
Using a separate high-speed processor to detect the flight time of individual particles in accelerated airflow
particle size range
0.5-20 μ m (aerodynamic diameter)
0.37-20 μ m (light scattering diameter)
Aerodynamic diameter resolution rate
0.02μm(1μm),0.03μm(10μm)
resolution
Particle size resolution: 32 channels/10 times particle size, 52 channels, non correlated mode 1024 bit raw flight time data (4ns/bit)
Light scattering intensity resolution: 16 channel light scattering intensity, 64 channel raw light scattering intensity data
Detecting particle types
Suspended particulate matter and non-volatile liquids
Zui large particle detection concentration

1000 pieces/cm3At 0.5 μ m, the probability of overlapping events occurring is less than 5%
1000 pieces/cm3At 10 μ m, the probability of overlapping events occurring is less than 10%
The upper limit of available data is 10000 pieces/cm3

Zui small particle detection concentration
0.001 pieces/cm3
Concentration range
± 10% reading value plus statistical counting deviation
Aerodynamic particle size maximum speed
>200000 pieces/s
Total sampling flow
5.0L/min
Sheath gas flow rate
4.0L/min
Sample gas flow rate
1.0L/min
operate temperature
10~40℃
Atmospheric pressure correction
Automatic calibration within 400 to 1030mbar (complete calibration within 700 to 1030mbar)
Laser source
30mV, 655nm diode laser
detector
Avalanche type photomultiplier tube (APD)
Front display panel
320 × 240 pixels
operation temperature
10~40℃
Working humidity
10~90%
supply voltage
110-240VAC, 50/60Hz, 100W or 24VDC
Communication method
RS~232 (9-pin) interface
Output
Digital I/O:
Configure analog output: BNC (0-10V)
Pulse analog output: BNC
Flight time digital output: BNC external controller with 15 pin interface (3 inputs/3 outputs) and 2 analog input interfaces
External dimensions
Aerosol injection port: outer diameter 3/4 inch
Case size (LWH): 38cm × 30cm × 18cm
weight
10kg
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