Jessup, MD ... DYNAFLOW, INC. is pleased to announce the development of a new instrument for measurement of bubble size distributions and void fractions in gas/liquid mixtures and flows. The ABS Acoustic Bubble Spectrometer®© (ABS) is useful in a wide variety of two-phase flow applications where knowledge of the bubble size distribution, and the volume fraction of gas in the liquid are important. These areas include oceanography, chemical engineering, controlled laboratory testing particularly where cavitation or boiling are possible and the underlying bubble nuclei distribution must be known, industrial flows, specialty fluids based on gas/liquid mixtures, aeration, heat exchangers and biomedical instrumentation. The instrument can provide the data in near real time, thus making it suitable for process or time varying applications.

The ABS Acoustic Bubble Spectrometer®© exploits the fact that bubbles strongly affect acoustic wave propagation. Since a bubble’s acoustical cross-section is three to four orders of magnitude greater than its geometric cross-section, bubble content can be easily determined in the presence of particulates. Unlike optical techniques, there is no requirement for liquid or container transparency.