Continuous Emission Monitoring System are used to monitor various chemical which are released to environment produced during various chemical reactions in industries.
These are sometimes mandatory requirements imposed by various local/international bodies
The most common of them are Sulphur( SOx) Nitroge(NOx) Cabon Dioxide/monoxide( COx) Analyser.
There are also some analyser which continuously monitor Oxygen and COX content from furnace/burner to control keep the burner to work in efficient manner.