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ETG 6903 H

NH3 Hot wet gas monitor

Selective catalytic reduction (SCR) is a technique that allows you to reduce NOx emissions in the exhaust gases by converting NOx into 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 marine ships.
In practice, ammonia is injected into the exhaust gas or fumes with a catalyst. The NOx molecules are chemically reduced to molecular nitrogen and water vapor. Ammonia slip is an industrial term that refers precisely to excess ammonia present in the final discharge or “left over” from the SCR process.

Ammonia plays a fundamental role in the radiation balance and in the chemistry of the atmosphere. The ETG 6903 H is able to reliably measure NH3 at low ppm concentrations without the need for frequent recalibrations. This analyzer is therefore ideal for the study on monitoring NH3 emissions in agricultural studies or applications in remote sites, e.g. in environmental research.
The ETG 6903 H analyzer uses an enhanced TDLS for the detection of this gas, whose narrow bandwidth laser beam (0.1 nm) scans in the absorption band of the target gas, performing an absorption measurement in the near infrared high resolution.

  • Ammonia (NH3) extractive gas analyzer tunable diode laser based
  • Sample hot &wet
  • 19” Rack mounting
  • Minimum Standard range 0-20/50/100/500ppm
  • Maximum Standard range 0-500 ppm
  • Limit of detection 0.2 ppm
  • Signal output 4-20 mA, Modbus, Profinet
  • Other technical details please to download the technical bulletin

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