Fluxus F/G 7407.316 SE ultrasonic liquid and gas clamp-on flowmeters allow precise, bi-directional, dynamic measurement of volume and mass flow rates of any gas and liquid media, including wet gas (up to a liquid volume fraction of 5%) or liquids carrying high solids contents. They're FM Class I, Div. 2-certified for hazardous areas. Transducers for FM Class I, Div. 1 and 2 are available.