Device Packaging 2019

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Development of Autonomous -Flame Ionization Detector for the Explosion Protection in Civil Sewer Networks
Keywords: micro flame inonisation gas detector, embedded sensor, Ceramic multilayer technology
The flame ionization detector (FID) is the best-known sensor for the analysis of small traces of organic compounds in environmental protection. The measuring principle is based on the ionization of organic compounds by a hydrogen flame. The advantages of a FID are excellent measuring performances, such as a very low detection limit, selectivity and measurement linearity. Unfortunately, the proper operation of FIDs comes along with high gas consumption of high purity hydrogen and synthetic air. Therefore, a complex system is required in order to realize reliable and safe gas supply, which makes this measuring method cost-intensive and limited for field instruments. Low Temperature Co-fired Ceramic technology (LTCC) has been continuously improved over the last 30 years. This technique was at the beginning utilized for the industrial fabrication of multilayer substrates (alternative for PCBs) with integrated electronic components and for customized packages. These packages not only protect the microsystem, but also enhance its electrical properties. Recently LTCC technique is developed towards ceramic actuators, sensors, and microsystems. The most common sensors developed in research institutes and at universities are pressure and flow sensors. The most promising further research developments are ceramic microsystems. This contribution presents a novel autonomous -FID system for the explosion protection in civil sewer networks and shows the development, fabrication, and characterization of two important ceramic parts of this device: an integrated LTCC electrolyzer and an LTCC -FID. The LTCC electrolyzer was fully developed in an industrial environment and is currently being characterized by the consortium. The LTCC -FID is in the final phase of laboratory development and will be further industrially upgraded in the near future.
Franz Bechtold, Managing Director
VIA electronic GmbH
Hermsdord, Germany

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