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Able to measure bubble size distribution and
volume fraction of gas in a liquid in 2-phase flow applications, the ABS
acoustic bubble spectrometer from Dynaflow, Inc., Jessup, MD, does
not require liquid or container transparency. The spectrometer's pair of
hydrophones transmits and receives short monochromatic bursts of varying
frequencies, letting you determine the attenuation and phase speed in
bubbly liquid. Built around a PC Windows platform, the unit includes
signal generation and DA cards. Application areas include oceanography,
chemical engineering, industrial flows, controlled lab testing, specialty
fluids based on gas/liquid mixtures, aeration, heat exchangers, and
biomedical instrumentation. (301-604-3688, fax 301-604-3689) 