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 two detection electrodes different in sensitivity with respect to bonded chlorine and also has an operational processing circuit 26 setting off the effects of bonded chlorine contained in the respective currents obtained from the respective detection electrodes to calculate the concn. of free chlorine from the respective currents.