Development of Automation Approaches for Liquids Density Direct Measurement by Differential Method

This paper presents the development of industrial automation systems approaches for liquids density measuring. In particular, the subject area of natural waters density direct measurement is considered. The considered approaches for accurate measurement of liquid density are applicable to industrial processes, environmental monitoring and quality control. The proposed approaches are aimed at automating and improving the quality of the metrological measurement process, providing more efficient and reliable results compared to manual measurements and automatic indirect measurements based on the water state equation application. The research is focused on the development of a system concept using a differential method, which involves measuring the pressure difference between two points in the control and reference fluids to determine its density. Mathematical modeling is used to take into account transient processes and improve the accuracy of measurements due to temperature compensation. Software simulation models are developed based on the principles of fluid mechanics and include relevant parameters such as turbulence, temperature and pressure. The results of experimental studies showed the high efficiency of the developed system for accurate measurement of liquid density with comparable or improved accuracy compared to traditional manual methods. In addition, the advantages of the proposed automated system are higher measurement speed and reduced human errors. The results of this study are important for a variety of applications requiring accurate density measurements, including industrial processes, marine environmental monitoring, and rapid analysis in the laboratory.