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Continuous emission monitoring systems (CEMS)
CEMS are 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.
Facilities employ the use of CEMS to continuously collect, record and report the required emissions data.
Envisaged analyses could be for example:
Dust
CO (carbon monoxide),
NOx (nitrogen oxides),
SO2 (sulfur oxide),
HCl (hydrogen chloride),
CO2 (carbon dioxide),
H2O (water),
O2 (oxygen),
TOC (total organic carbon).
In monitoring the emissions, the system must be in continuous operation and must be able to;
sample,
analyze,
and record
data at least every 15 minutes and then averaged hourly.
That means the operation frequency can be either continuous operation or activation at a predefined frequency or upon demand.
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