The application of on-line concentration analyzers based on the refractive principle in the chlor-alkali industry is discussed,and its role in the real-time concentration measurement of brine,caustic soda and hydrochloric acid is analyzed.After using on-line refractive concentration analyzers,real-time and ac-curate measurement of the concentration of key chemical substances has been achieved,significantly improv-ing the degree of automation and optimization of the production process.
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