ooling water is one of the main energy sources in the production process of pharmaceutical companies, and the accurate measurement of cooling water directly affects the power cost of products. There are various types of cooling water such as -5 ℃ and 7 ℃, and there are inlet and outlet pipes with generally larger diameters; In addition, pharmaceutical companies need to frequently adjust their cooling capacity due to process requirements, and the amount of cooling water used is always fluctuating. Historical data analysis of flow meters can provide data support for the reasonable matching of cooling water usage and supply. As an energy supply unit, the power workshop must be able to accurately measure the amount of various cooling water used to correctly allocate and settle with each energy consuming unit.