Speaker
Jerome Daguin
(CERN)
Description
In CO2 evaporative detector cooling systems, the measurement of the mass flow rate is not always trivial. Not many instruments can be used in magnetic field or radiation environment and few of them can measure CO2 in two phase. After a brief review of the existing measurement techniques reported in literature, the presentation highlights the experience gained so far at CERN with a few mass flow meter models available on the market or designed by the team. Three measuring principles are investigated: Coriolis, thermal and differential pressure. Data on the use of the three types are shown and compared in order to suggest the best possible instrument for the various application cases.
