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National Labs
The United States Department of Energy national laboratories and technology centers are a system of facilities and laboratories overseen by the United States Department of Energy (DOE) for the purpose of advancing science and technology to fulfill the DOE mission. Sixteen of the seventeen DOE ...
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Gas Detection Systems - CEMS

Gas Detection Systems - CEMS
CEMS (Continuous Emissions Monitoring Systems) - Gas Detection Systems use various plastics designed to withstand the gas fumes, temperatures and pressures involved. Professional Plastics offers several plastics including PFA Tubing used by the Gas Detection System - CEMS industry. Process and emission measuring systems are used worldwide in refuse incineration, crematoria, power-generation, and all kinds of other industrial combustion and process engineering.

CEM systems were historically used as a tool to monitor flue gas for oxygen, carbon monoxide, and carbon dioxide to provide information for combustion control in industrial settings. They are currently used as a means to comply with air emission standards such as the United States Environmental Protection Agency's Acid Rain Program, other federal emission programs, or state permitted emission standards. Facilities employ the use of CEMS to continuously collect, record, and report the required emissions data.

The standard CEM system consists of a sample probe, filter, sample line (umbilical), gas conditioning system, calibration gas system, and a series of gas analyzers which reflect the parameters being monitored. Typical monitored emissions include: sulfur dioxide, nitrogen oxides, carbon monoxide, carbon dioxide, hydrogen chloride, particulate matter, mercury, volatile organic compounds, and oxygen. CEM systems can also measure air flow, flue gas opacity and moisture.
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