Abstract
Flowmetering methods for He II are reviewed with emphasis on problems particular to this unique fluid. The flowmetering of He II is unusual because the fluid processes a number of special properties: a high rate of heat conductivity, a low temperature ( T < 2.2 K) and a high susceptibility to cavitation. Methods developed for metering He II flow include turbine flowmeters, venturis, fluidic flowmeters and flowmeters based on propagation of temperature or pressure pulses.
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