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Title: High Speed Nozzle Flowmeter Using Miniaturized Laser-Doppler Techniques
Author: V. Strunck, E. A. Krey, H. Miiller, D. Dopheide
Source: 1995 International Symposium on Fluid Flow Measurement
Year Published: 1995
Abstract: The application of modern optical techniques to meter calibration and real time measurement of large flowrates is outlined. The basic system consists of a converging device (nozzle) and a miniaturized laser Doppler system integrated inside the wall of a short duct section. Optical access to the flow by means of glass windows is not required anymore. This piugicss has been made possible by a new technique using two separated semiconductor lasers and signal demodulation.