Integrated automated emissions monitoring
July 2012
Analytical Instrumentation & Environmental Monitoring
Emirak 1 from Signal Group is an extractive multigas analyser system for continuous emission monitoring. It is normally used to measure the concentration of SOx, NOx, CO2 and other components in the flue gas of large combustion processes, incinerators and other processes where this is required by law. The Emirak 1 has been designed for compliance with EN14181.
Emirak 1 applies Signal’s modular analyser technology (MAT) to continuous emissions monitoring. Based on the principle of distribution control, MAT consists of a set of intelligent modules communicating via an internal data highway and a bus master, with a centralised control computer.
There are three different types of modules – analyser, sampling control and interface modules – each controlled by a dedicated microcontroller. These microcontrollers collect data every second and prepare one minute files consisting of averaged measurements, diagnostics and mode of operation. These files are gathered, with rigorous time-keeping, by the bus master, which acts as a buffer between the control computer and the individual microcontrollers. The microcontrollers are coordinated by the system control computer which is equipped with Emilog, a complete software package providing centralised supervisory control via a mouse or a keyboard, as well as data-logging and reporting facilities.
With Emirak 1 the flue gas is sampled using an extraction package controlled by the sampling control module and maintained at 180°C. This package comprises probe, heated filter, heated line and heated pump, and provides a clean, hot sample gas to those analyser modules requiring the sample to be maintained above water, hydrocarbon and acid dewpoints. Emirak 1 is only used when all gases require wet/hot analysis. If moisture measurement is required, Emirak 3 must be used.
For more information contact Colwyn Savings, OEN Enterprises, +27 (0)11 675 4447, [email protected], www.oenenterprises.co.za
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