Influence of Gas Pressure on Coulometric Trace Humidity Measurement
- 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 the other one passed a reference hygrometer after decompression. Both signals were recorded and then compared after calculation of resulting frost point temperature. Calculation is based on a calibration function obtained at ambient pressure. Comparison showed that an increasing pressure resulted in a higher derivation between sensor signal (calculated frost point temperature) and reference frost point temperature. At an absolute pressure of 2 bar the differences were minor in consideration of the uncertainty, however at 15 bar the differences were 6.77 K. Nevertheless, it was possible to measure the gas humidity at higher pressure with coulometric trace humidity sensors.
| Autor*innen: | Marc Detjens, Carlo TiebeORCiD, Ulrich Banach |
|---|---|
| Dokumenttyp: | Beitrag zu einem Tagungsband |
| Veröffentlichungsform: | Graue Literatur |
| Sprache: | Englisch |
| Titel des übergeordneten Werkes (Englisch): | Proceedings of 17th International Meeting on Chemical Sensors 2018 |
| Jahr der Erstveröffentlichung: | 2018 |
| Herausgeber (Institution): | University of Vienna |
| Verlag: | AMA Service GmbH |
| Verlagsort: | Wunstorf / Germany |
| Erste Seite: | 715 |
| Letzte Seite: | 716 |
| DDC-Klassifikation: | Naturwissenschaften und Mathematik / Chemie / Analytische Chemie |
| Freie Schlagwörter: | Coulometric sensors; Gas pressure influence; Trace humidity measurement |
| Veranstaltung: | 17th International Meeting of Chemical Sensors, IMCS 2018 |
| Veranstaltungsort: | Vienna, Austria |
| Beginndatum der Veranstaltung: | 15.07.2018 |
| Enddatum der Veranstaltung: | 19.07.2018 |
| DOI: | 10.5162/IMCS2018/P2EC.7 |
| ISBN: | 978-3-9816876-9-9 |
| Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
| Datum der Freischaltung: | 23.07.2018 |
| Referierte Publikation: | Nein |

