2018
article
OpenAlex
Carlo Tiebe, Marc Detjens, Ulrich Banach, Thomas Hübert
Abstract Especially trace amounts of water vapour in gases can be reliably determined by coulometric trace humidity sensors. The principle of these sensors is based on water vapour absorption in a hygroscopic layer and its subsequent electrolytic decomposition. The calibration of sensors …
de
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2018
article
OpenAlex
Marc Detjens, Thomas Hübert, Carlo Tiebe, Ulrich Banach
Trace humidity was measured by using miniaturized planar coulometric sensors in technical gases such as hydrogen, nitrogen, helium, nitrous oxide, and synthetic air. Frost point temperatures tf in the gases ranged from −60 °C to −30 °C, which is equivalent to a …
de
(code pays fourni par la source)
2018
article
OpenAlex
Carlo Tiebe, Marc Detjens, Ulrich Banach
Inhalt dieses Seminarbeitrags sind Hygrometer und Kenngrosen der Hygrometrie, Anforderungen an ein Pruflabor sowie die Bestimmung der Messunsicherheit bei der Prufung von Feuchtesensoren wie auch Prufung auf signifikante Abweichungen.
2018
article
OpenAlex
Carlo Tiebe, Ulrich Banach, Thomas Hübert
Technische Richtlinien enthalten Empfehlungen sowie Anforderungen zum Stand der Technik zur Aufstellung von Bewertungskriterien und Behandlung wissenschaftlich-technischer Fragen. Sie fordern den Erfahrungsaustausch und Technologietransfer zwischen Entwicklern und Anwendern. In unserem Beitrag stellen wir die Richtlinie VDI/VDE 3518 vor. Diese Richtlinienreihe definiert Begriffe, …
2018
article
OpenAlex
Marc Detjens, Carlo Tiebe, Ulrich Banach, Uwe Ritter
This work presents a first attempt to use ionic liquids as a new coating for planar coulometric sensors. These sensors are used for the measurement of trace humidity in various gases. Usually, the coating of the sensors is tetraphosphorus decaoxide and its …
Accès ouvert
2018
conference-paper
OpenAlex
Marc Detjens, Carlo Tiebe, Ulrich Banach
Planar coulometric sensors were investigated in humidified synthetic air at various absolute gas pressures, i. e. 2 bar, 5, bar, 10 bar, and 15 bar.Humidified gas flow at adjusted gas pressure was split into two flows, one passed a coulometric sensor and …
2017
conference-paper
OpenAlex
Marc Detjens, Th. Hübert, Carlo Tiebe, Ulrich Banach
Planar coulometric sensors were tested in humidified synthetic air at various gas temperatures. Generated frost point temperature in the gas ranged from -30 °C to -60 °C and were measured by coulometric sensors and in addition by a calibrated dew point hygrometer. …
de
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2017
article
OpenAlex
Thomas Hübert, J. Majewski, Ulrich Banach, Marc Detjens et autres
The efficiency of gas sensor application for facilitating the safe use of hydrogen depends considerably on the sensor response to a change in hydrogen concentration. Therefore, the response time has been measured for five different-type commercially available hydrogen sensors. Experiments showed that …
2017
article
OpenAlex
Marc Detjens, Thomas Hübert, Ulrich Banach
Die Messung der Gasfeuchte im Spurenbereich in unterschiedlichen technisch und medizinisch relevanten Gasen erfolgte mit Sensoren, die auf dem coulometrischen Messprinzip basieren. Die verwendeten planaren coulometrischen Sensoren wurden im Frostpunkttemperaturbereich von -70 °C bis -30 °C in synthetischer Luft, Wasserstoff, Stickstoff und …
2017
article
OpenAlex
Carlo Tiebe, Ulrich Banach, Thomas Maria Hubert, Kornelia Gawlitza et autres
Pollution through emission of toxic gases is an increasing problem for the environment. It affects similarly agricultural, industrial and urban areas. In future, environmental emissions in ambient air must be monitored at even lower concentrations as nowadays. One environmental relevant compound is …
Accès ouvert
2017
conference-paper
OpenAlex
Kornelia Gawlitza, Carlo Tiebe, Ulrich Banach, Robert Nöske et autres
Because ammonia and its reaction products can cause considerable damage to human health and ecosystems, there is a need for reliably operating and reversibly interacting sensor materials to monitor traces of gaseous ammonia in ambient air, which at best can be used …
de
(code pays fourni par la source)
2016
article
OpenAlex
Frida Ulfah Ermawati, Suminar Pratapa, S. Suasmoro, Thomas Hübert et autres
id, de
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