Abstract
Abstract Within the ITER Project activities an LHe flowmeter will be designed to provide numerous long-term measurcments under post-thermalcycling, quench and other operational conditions. The device should serve both for operational monitoring and back-up quench detecting. A long distance between an internal measuring device and a feedthrough requires the use of external sensors with Iow voltage feedthrough rather than helium capillaries. A range of the most popular methods of measuring a liquid helium flow is discussed. The results of the flow measurements on the facilities T-15, PTF, DPC, TOSKA, CSMC, ENEA (PUFF) are described. Different types of measuring devices are considered, including the Venturi tube, diaphragm, turbine, Coriolis, V-Cone, ultrasonic and correlation flowmeters.
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