Developing of an acoustic measuring system for analyzing the composition of substances

The relevance of the study is due to the problem of untimely analysis of the composition of liquid mixtures during their production by enterprises of the food, chemical and oil refining industries. The traditional method of such analysis is carried out after the formation of a batch of products, which is why enterprises incur costs associated with the disposal of defective batches of products. This article is devoted to the development of an acoustic measuring system for analyzing the composition of liquid substances, capable of being used to analyze various liquid products in industry in a continuous mode when transporting these products through the internal industrial pipeline system, which makes it possible to identify defects before the formation of a batch of products, thereby reducing disposal costs. The sounded system, built into the pipeline, contains two measuring channels, including two piezoelectric receivers and one piezoelectric emitter, common to the two channels. As part of this work, equipment is selected based on an analysis of the repeatability of research results, in particular, the possibility of using one or another generator that generates exciting signals for a piezoelectric emitter is considered. The possibility of using excitation signals of various shapes and/or durations is investigated, and repeatability is assessed based on the linear correlation coefficient between several repetitions of experiments with the same type of excitation signal. The need for two measuring channels is analyzed. The materials are of practical value for enterprises producing liquid products, as well as for manufacturers of analytical equipment.

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