Cost Effective Sample Gas Handling Systems for CEMS (Continous Emission Monitoring)

For reliable and continuously operating exhaust gas analysis with repeatable and representative measurement results it is essential to have an efficient and tailored sample handling system. This is often a complex task with several steps of conditioning equipment. Only the correct choice and the right sequence will lead to a continuous and trouble free operation of the whole system. Ideally with minimum maintenance and of course cost effective - for the system integrator as well as the operator.

Exactly this is the focus of JCT Analysentechnik GmbH since its launch in 1992. The experts at JCT who gained their experience already before setting up the company developed an extensive product range with a huge number of options. Thus they are able to offer individual solutions for nearly all applications. Solutions optimised technical and commercial. 

The first critical step in the sample handling sequence is the gas sampling probe - usually a heated gas sampling probe that removes dust particulates and other solids and avoids condensation of water vapour. The heating avoids corrosion as well as chemical change like wash out of water soluble gases.  A consistent and homogenous temperature above the dew point is essential. The basic models of the JES series sampling probes offer a wide range of sampling tubes, heated sampling tubes and pre filters. Completed by an extensive range of built in options like flange size, filter material, process cut-off valves, back purge and calibration systems the sampling probe can be tailored exactly to any application. 

For the transport of the sample gas to the analyser house JCT offers different heated sample lines of the JH3 series. These lines prevent condensation and chemical change of the sample. When used outdoor in cold ambient it also protects from freezing. The JH3 heated sample lines are available as cut-to length version for self-assembly on site or as custom tailored version. The additional options like replaceable inner core, calibration gas core or control and power supply cables convert these sample lines into all-in-one bundles. 

The further conditioning of the sample gas happens usually in the analyser cabinet. Standard components for this task are sample gas coolers for specific removal of condensate, condensate detection systems and fine dust filters for removal of remaining dust particulates. These components are protecting analysers from condensate and dust particulates and guarantee reliable measurements without cross-sensitivity caused by water vapour. Further necessary components are sample gas pumps and flow meters to set the correct flow rate for the analyser. JCT offers all components as single parts as well as turnkey solutions for sample gas conditioning. The JCL, JCC and JC series sample gas conditioners comprise all necessary equipment and avoid complicated and expensive single sourcing as well as mounting, wiring and tubing of the single components. Of course all units are self monitored and offer the highest safety for the analyser. 

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