The monitoring of emission components in flue gases is one of the most important topics for continuous gas analysis. This is as a result of legislation for monitoring emissions, e.g. for large combustion plants, and also due to the requirements of companies operating process plants who can draw conclusions on the process efficiency from the gas analyses, e.g. with boiler control, DENOX and DESOX plants.

The market requires a reliable complete system which is specially designed for the application. The Set CEM 1 (Continuous Emission Monitoring) offered by Siemens is a system which reliably covers all requirements associated with sampling, sample preparation, and gas analysis.

It is possible to determine the concentrations of the gaseous components CO, CO₂, NO, NOx, SO₂, O₂, HCl, HF, NH₃ and H₂O.

The ULTRAMAT 23 and OXYMAT 6 are used for the extractive, continuous gas analysis.

The standardized Set CEM provides great clarity and simple configuration facilities. Different versions mean that it is possible to appropriately adapt the system to the requirements. Standardization also means that not all imaginable versions can be included, and that it may not be possible to implement special requirements such as armored cables, customer-specific documentation or specific conductor labeling without an extra charge.