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Vane wheel sensors have demonstrated their proficiency in a multitude of demanding applications in conjunction with hydrogen. The gas compositions often change at short notice and the pipelines are filled for neutralisation purposes with inert gases such as argon, nitrogen or carbon dioxide. To eliminate a potentially explosive atmosphere the accurate flow rate is to be determined irrespective of the actual gas composition. Flow rate measuring with Höntzsch vane wheel sensors is possible in a wide range of applications irrespective of density, pressure and temperature.back to list