APPARATUS FOR MEASURING CONCENTRATION OF CHLORINE

摘要

PROBLEM TO BE SOLVED: To accurately measure the concn. of free chlorine in a chlorine concn. measuring apparatus. SOLUTION: An apparatus is constituted so that voltage is applied across the detection electrode and opposed electrode 18 immersed in a soln. S to be measured and the concn. of free chlorine in the soln. S to be measured is measured from the current flowing across these electrodes 16, 18. This apparatus has a potential setting circuit 20 applying two or more kinds of different voltages across the detection electrode and the opposed electrode and a means setting off the mutual effects of bonded chlorine contained in the respective currents generated when voltages are applied to calculate the concn. of free chlorine from the respective currents.