The Ways That A CEM System Is Used To Meet EPA Guidelines

Originally, the CEM system was first developed to monitor the equipment emission of flue gases for control of industrial combustion. With time, industry started to focus more on environmental regulation and the continuous emissions monitoring system began to be used to monitor pollutants within gas emissions. The CEM is now used for a variety of applications and systems are developed to monitor a range of gas emissions. These systems have moved from being large, expensive to maintain complexes of piping and alarms to low-cost, elegant systems due to industry and regulator demand.

Companies made modern CEM analyzers in response to the growing need for a monitoring method that could help them determine the amount of pollutants within their emissions. The sensors involved in continuous emissions monitoring devices can register very low amounts of pollutants in emissions. Flue stack emissions do have very low levels of pollution, down to as low as two hundred parts per million. What sort of CEM device is used at the plant is determined by what pollutants the company is looking for and also local needs. Every state does have its own requirements regarding pollution monitoring in conjunction with regulations set by the EPA.

Typically, CEM equipment is intended to monitor one or more of these gas pollutants, Carbon Dioxide, Nitrogen Oxides, Sculpture Oxides, CO and Hydrocarbons. Nearly every CEM system can be used to detect these different particulates within emissions. The system will drag in the emissions through different filters intended to catch the different particulates. The system then analyses the contained material to determine the volume of each different particulate present in the gas emissions of a facility.

Of course, a number of different types of CEM analyzers from the standard Extractive CEM to the In-situ Folded Beam. The Extractive CEM relies on a method similar to what is described in the last paragraph. While the In-Situ Folded Beam uses a slotted metal pipe designed to retain gases as they rise within the stack. A UV light within the cylinder heads towards a reflective mirror on the end and returns to a receiver at the entrance of the device. The gases will alter the light so it can provide valuable information about what was within the gases.

Companies have a number of options to choose from for equipment monitoring including in-service oil analysis and acoustics monitoring. It only applies to one half of the industry. You will need to select the correct CEM device to monitor the pollutants that may be within your stack emissions.