The document describes an online total carbon analyzer that can be used to monitor water quality in factories, mines, sewage treatment plants, and other industrial facilities. It works by converting organic carbon in water samples into carbon dioxide gas, which is then measured with an infrared detector to determine the total carbon content. The analyzer has a simple structure that is easy to maintain and can reliably detect total organic carbon at rates higher than other common water quality tests. It provides real-time monitoring and is suitable for measuring water quality in various industrial processes.