Electro-Chemical Devices has developed a flexible, user-friendly series of sensors for chlorine analysis, designed to easily and cost-effectively fit into chlorine monitoring systems in a wide variety of aqueous environments. The FCA-22 Free Chlorine Sensor, TCA-22 Total Chlorine Sensor and CDA-22 Chlorine Dioxide Sensor are high-accuracy amperometric sensors that are ideal for fresh water applications including monitoring of industrial cooling and rinse water, drinking water and wastewater. The Model FCA-22 Free Chlorine Sensor is a low-maintenance, high-accuracy amperometric free chlorine sensor ideal for most aqueous environments. It features a long-lasting sensor that minimizes part replacement and technician labor expenses. The FCA-22 precisely measures free residual chlorine from 0.05 to 20.0 ppm Cl2, 5 to 9 pH and at temperatures from 32 to 122°F (0 to 50°C).