The AMI Codes-II HC colorimetric process analyzer (iodometric-method) is designed for measurement of elevated chlorine up to 80 ppm. It offers the continuous online determination of disinfectants based on the iodometric colorimetric method (AWWA 4500-Cl C). It measures chlorine (CL2) and flow. The complete system includes measurement and control electronics, photometer, flow indicator, reaction chamber, reagent dosing system and reagent container. All usual dosing devices for disinfectants can be connected either through relays or analog output signals. Two independent controllers can operate simultaneously.