Ultrasonic Flowmeter and Velocity Meter for the Components of a Multiphase Stream

A new method proposed for measuring the velocity and flow rate of the components of a multiphase stream of gas, oil, and water is based on statistical processing of the ultrasonic measurements. This ultrasonic meter has successfully passed tests on oil wells.     

Development and study of a radiance measurement system based on a CCD array in the vacuum and near ultraviolet region

We describe methods and instrumentation that we have developed for measuring the radiance distribution over the emitting region of plasma emitters in the extreme vacuum ultraviolet region. The radiance comparator for vacuum and near ultraviolet radiation includes a reflecting telescope based on highly reflective nanostructures, a set of filters to eliminate the effect of scattered light and higher orders of diffraction, and a cooled CCD array.