New Miniaturized and Space Qualified Gas Sensors for Fast Response In Situ Measurements

Preliminary results of a miniaturized respiratory sensor system used under hypergravity conditions up to 9gz

“…and can be measured as a voltage signal U s [13,14]. R describes the universal gas constant, T the electrode temperature and U offset the originating offset voltage.…”

“…Because the sensors are still under development, the presented sensor performance is actually achieved only for several pre-selected sensors and only after a defined calibration and startup procedure. Some of these calibration methods and specific sensor applications are given in our previous publications [12][13][14].…”

D2.2 - High Temperature Sensors for In-Situ Process-Monitoring in Harsh Environments

“…Fig.5 shows the CarboSen multi-layer sensor element consisting of the Pt-heater (7), Au-contact pads (5) and a protective glass layer (1) on one side of the Al 2 O 3 -carrier substrate (6). On the other side, galvanically isolated there are the inner Pt-electrode (4) and two identic outer measurement electrodes (2) separated by a porous functional zirconia layer (3) and again contact pads (5) and a protective glass layer (1). The overall geometry is 20x3.5x0.5 mm, resulting in a reduced heater power of around P h = 2,7 W at nominal sensor temperature of around t S ~ 600 °C.…”

“…The results prove an increase of AO after local sunrise when ISS orbits from south to the equator followed by a decrease when continuing the orbit to higher latitudes. Some minutes before the ISS exits the local eclipse phase, the AO level reaches its minimum [1]. Based on FIPEX, and especially on the knowledge around the AO-electrode for measuring oxidizing gases the combustible gas sensor CarboSen was developed especially for combustion optimization.…”

P3.2 - Miniaturisierter Sauerstoffsensor auf Festkörperelektrolytbasis für die in-situ Messung in der Atemgasanalyse

“…Hier bedient man sich bisher umfangreicher mathematischer Verfahren, mit denen die Signale unter Inkaufnahme zusätzlicher Fehlerquellen künstlich beschleunigt werden [4]. In Anbetracht dieser Herausforderungen wurden am Institut-für Luft und Raumfahrttechnik (ILR) Sensoren aus der Atmosphärenforschung für den Einsatz in der terrestrischen und Weltraummedizin weiterentwickelt [5,6]. Dieser O 2 -Sensoren können aufgrund ihrer robusten, leichten und stark miniaturisierten Bauweise direkt im Hauptatemstrom (in-situ) eingesetzt werden.…”