Shadow Doppler Particle Analyzer ( SDPA )
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Specifications
General Specifications
|
Method |
Shadow Doppler Velocimetry |
|
Size Range |
5 – 1000mm |
|
Size Dynamic Range |
1:20 |
|
Density |
1,000 particles/cm3 max. |
|
Velocity |
100m/s max. |
|
Sizing Accuracy |
4% for spherical particles 10% for non-spherical particles |
Data Output
|
Particle property |
Arrival time |
|
|
Shadow image |
|
|
Area-equivalent diameter |
|
|
Feret diameter |
|
|
Shadow area |
|
|
Major and minor axis length |
|
|
Angle of major axis |
|
|
Circularity |
|
|
Circumference |
|
|
Weighted Center |
|
|
Velocity |
|
|
Trajectory angle |
|
|
Position of particle passage |
|
|
Defocus length |
|
|
Number density (*1) |
|
Statistic information |
Mean velocity and standard deviation |
|
|
Arithmetic mean diameter and standard deviation |
|
|
Area mean diameter |
|
|
Volume mean diameter |
|
|
Sauter mean diameter |
|
|
Mode diameter |
|
|
Lower diameter (10%) |
|
|
Median diameter (50%) |
|
|
Upper diameter (90%) |
|
Display |
Velocity histogram |
|
|
Size histogram |
|
|
Size-velocity correlation map |
|
|
Particle shape monitor |
LDV Transmitter (Nd:YAG laser type)
|
Laser |
|
|
Type |
Nd: YAG laser (semi-conductor driven) |
|
Wavelength |
532nm |
|
Power |
100mW |
|
AOM drive frequency |
80MHz |
|
Beam separation |
36mm (for the front lens) |
|
Focal length |
250mm (*2) |
Doppler Receiver
|
Focal length |
300mm (*2) |
Shadow Receiver
|
Focal length |
200mm (*2) |
|
|
2.5mm/pixel (*2) |
Fiber-Array Sensor
|
Fiber diameter |
125mm/channel |
|
Number of fibers |
64 |
|
Cable length |
3m |
Signal Processor
|
Doppler signal |
|
|
Shift frequency |
-20 to +20MHz |
|
Photoelectric converter |
Photo multiplier |
|
Processing method |
FFT |
|
Frequency range |
1kHz to 40MHz |
|
Band-pass filter |
8 different types |
|
A/D converter |
8 bit |
|
Shadow signal |
|
|
Photoelectric converter |
Avalanche photo diodes |
|
Sampling frequency |
50kHz to 20MHz |
|
Shadow intensity resolution |
256 levels (8-bit A/D) |
|
Data transfer |
PCI bus |
Computer
|
Type |
IBM PC compatible (DOS/V) |
|
OS |
Microsoft WindowsTM |
*1: Under development
*2: Typical specifications (other options possible)
All information contained in this page is subject to change without notice for improvement.
Click these links for more details.
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©2002 Kanomax USA, Inc. All rights reserved.