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Open AccessProceedings

Tomographic Measurement of Ammonia Distribution on a Hot Gas Test Bench

Kompetenzzentrum—Das Virtuelle Fahrzeug Forschungsgesellschaft, 8010 Graz, Austria
Author to whom correspondence should be addressed.
Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018.
Proceedings 2018, 2(13), 876;
Published: 30 November 2018
(This article belongs to the Proceedings of EUROSENSORS 2018)
In situ optical measurement systems for gas detection with high temporal resolution enable new possibilities of detection opportunities for continuous pipe gas streams. A tomographic absorption-based measurement system has been developed to detect the ammonia (NH3) concentration distribution within an exhaust pipe on a hot gas test bench. Multiple ammonia line concentrations are measured in situ by applying nondispersive absorption spectroscopy in the deep ultraviolet (DUV) region. The detectors consist of photodiodes in combination with optimized transimpedance amplifiers (TIV) allowing high sampling rates up to 3 kHz while providing a high signal-to-noise ratio (SNR). Despite the short path length of only eight centimeters a detection limit of 1 ppm has been achieved.
Keywords: ammonia; DUV; SCR; spectroscopy; tomography ammonia; DUV; SCR; spectroscopy; tomography
MDPI and ACS Style

Fischbacher, B.; Lechner, B.; Brandstätter, B. Tomographic Measurement of Ammonia Distribution on a Hot Gas Test Bench. Proceedings 2018, 2, 876.

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