Gas sensor

A central electrode 12 is arranged in a coiled heater electrode 10. They are buried in a SnO2-based inner area 6, and the entirety is covered by a filter 8. The volume of the inner area 6 is set at from 1x10-3 mm3 to 16x10-3 mm3, the total volume of the bead 4 is set at from 15x10-3 mm3 to 70x10-3 m...

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Bibliographische Detailangaben
Hauptverfasser:	NOMURA TOHRU, OKOSHI HIDEKI, YOSHIMURA TOMOKO
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A central electrode 12 is arranged in a coiled heater electrode 10. They are buried in a SnO2-based inner area 6, and the entirety is covered by a filter 8. The volume of the inner area 6 is set at from 1x10-3 mm3 to 16x10-3 mm3, the total volume of the bead 4 is set at from 15x10-3 mm3 to 70x10-3 mm3, and the ratio of the total volume of the bead 4 to the volume of the inner area 6 is set at from four to twenty to bring the sensor resistance in CO and that in methane closer to each other and increase the selectivity from hydrogen.