Enhanced laser Doppler anemometry
PTB-News 2.2016
05.04.2016
Schematic representation of the procedure used to calibrate the laser beams
To measure volume flow accurately by means of laser Doppler anemometry (LDA) (e.g. in CHP plants), the velocity profile must be determined inside the piping. For this purpose, the fluid velocities are calibrated at several measurement positions inside the pipe. The velocity information obtained is traceable to the interference fringe interval of a velocity measurement standard. Thanks to a new invention by PTB, the measurement uncertainty of the position determination has been considerably reduced, since now, even information on the geometry and on the refraction index of the optical access are measured directly on site. (Technology Offer 0411)
Advantages
LDA with greater accuracy
optimized ray-tracing
Contact person for questions about technology transfer
Andreas Barthel,
+49 (0)531 592-8307,
andreas.barthel(at)ptb.de,
www.technologietransfer.ptb.de/en