Sodium dichromate (Na2Cr2O7·2H2O) is used in the manufacturing of chromium metal, magnetic tapes, leather tanning, timber preservation compounds and metal finishing, as well as pigments for the plastic and ceramic industry
Vaisala K-PATENTS® Process Refractometer PR-43-GP is installed before and after the evaporator to measure in-line the concentration of sodium dichromate. The output signal of the refractometer can be used for real-time monitoring of evaporation efficiency, and for controlling the heat-flow and feed valves to keep a constant concentration.
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