The FiberFlow LDA system is a highly flexible solution for non-intrusive measurements of velocity at a point in space as a function of time. This Laser Doppler Anemometry (LDA) solution uses fiber optics to connect the laser and the transceiver probe. Many applications benefit from or require a fiber optic connection for intrinsic safety, submersion, or remote locations. We offer a variety of probe sizes, laser types, and configurations of transmitter and processor, which allows you ultimate flexibility to meet your flow measurement needs.
The FiberFlow LDA can easily be upgraded and reconfigured to suit the requirements of existing and new applications. With a full range of options and accessories including our full featured software, our FiberFlow LDA solution is the best-in-class system.
- Fiber optic connection between laser and probe without electronics meets requirements for C1D1 and other challenging environments
- 1-, 2- and 3-velocity component configurations
- Compact all-in-one laser transmitter including power supply, controller, and frequency shift optics
- Laser power up to 1W for high performance even at long measurement distances
- High transmission efficiency due to re-engineered optics with fewer components
- Four probe sizes with a range of front lenses to match flow rigs of any size
- Automatic laser safety shutters for user protection
- Alignment mode with laser power attenuated 99%
- Output polarization selectable for PDA applications
The basic elements are:
- A Laser Transmitter comprising laser, power supply, interface, beam-splitting/frequency-shifting optics, and fiber manipulators for guiding the laser beams into optical fibers
- A range of probes with diameters from 14 mm up to 112 mm
- A Burst Spectrum Analyzer, available at two performance levels covering velocities up to supersonic
- A BSA Flow software package with extensive data analysis presentation and export features
FiberFlow transmitting optics
The smallest probes are 14 mm in diameter and measure at 50 mm distance (in air) and can thus be employed where space is constrained, or where the probe can be placed directly in the flow. Application examples are flows in the engine compartment of a passenger car, and measurements in indoor-climate test rooms. The largest probes can be used for measurements at distances of up to several meters and are typically used in wind tunnels and large water channels.
R. Theunissen, P. Gjelstrup
Sophie Herpin, Laurent Perret, Romain Mathis, Christian Tanguy, Jean-Jacques Lasserre
P. Gjelstrup, H. Nobach, F.E. Jørgensen, K. E. Meyer