Simple and easy operated Laser Doppler Velocimeter for accurate flow velocity measurement with high repeatability
A Laser Doppler Velocimeter (LDV) measures fluid velocity by utilizing coherence of laser light. It detects the Doppler shift frequency of the scattering light of particles in the fluid and calculates the velocity of the particles (fluid). With a LDV system, non-intrusive measurements without disturbing the measuring object, liquid or gas flow, are achieved. No calibration is necessary and reverse flow measurements at a high resolution is also possible. The LDV system provides the absolute value of the flow velocity with accuracy.
The Smart LDV IV is a high quality Laser Doppler Velocimeter and compact in design. Absolute velocity measurement with high repeatability is realized with the Smart LDV IV.
| Measurement Specifications | |
| Flow Velocity Range | -40 m/s to 260 m/s (f=400 mm) |
|---|---|
| Optical System | |
| Laser | Laser Diode λ= 660 nm, 60 mW |
| Focal Length | 150 mm, 200 mm, 250 mm, 300 mm, 350 mm, 400 mm |
| Measurement Volume Size | 0.13 mm x 1.3 mm (f= 200 mm) |
| Measurement Method | Back scatter / Forward scatter (Option) |
| Probe Size | 104 mm x 104 mm x 345 mm |
| Shift Frequency | 0.01 to 10 MHz |
| Power Supply | AC100－240 V |
| Signal Processor | |
| Signal Processing | 8bit FFT (1024, 512, 256, 128 point) |
| Frequency Band | 1 kHz to 40 MHz (8 ranges) |
| Max. Data Rate | 120,000 speed data/sec (depending on measurement condition) |
| Validation | O to 1 V, Pulse, Alarm |
| Interface | USB3.0 |
| Software | |
| Max. Number of Data | 100,000 |
| Real Time Monitor | Burst waveform Burst spectrum Velocity histogram |
| Analysis Function | Mean flow velocity, Turbulent intensity, Skewness factor, Flatness factor Velocity histogram, Time-series display |
| Data Output | CSV format |
| Supported Operating System | Windows 10/11 (64bit), Japanese / English |
Specifications subject to change without notice.
Laser Doppler Velocimeter (LDV) detects Doppler shift frequency of the scattering light of particles in the fluid and calculates the velocity of the particles (fluid).
