The ETG 6900 TDL NH3 analyser uses an enhanced TDLS for NH3 detection, with a narrow bandwidth (0.1 nm) laser beam that scans the absorption band of the target gas, providing a high resolution near-infrared absorption measurement.
Ammonia plays a fundamental role in radiation balance and atmospheric chemistry. TheETG 6900 TDL NH3 is capable of reliably measuring NH3 at low ppm concentrations without the need for frequent recalibration. This makes the analyser ideal for NH3 emission monitoring studies in agricultural studies or applications at remote sites, e.g. in environmental research.
Selective Catalytic Reduction (SCR) is a technique that allows you to reduce NOx emissions in the exhaust by converting NOx to H2O and N2.
This technique has been adapted to many applications, including modern diesel engines, and is currently used both in large-scale power plants that burn coal or oil and in seagoing vessels.
In practice, ammonia is injected into the exhaust or flue gas with a catalyst. The NOx molecules are chemically reduced to molecular nitrogen and water vapor. Ammonia slurry is an industry term that refers specifically to the excess ammonia present in the final or "leftover" exhaust from the SCR process.
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