Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag

Verfügbarkeit
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Buchholz, Bernhard [VerfasserIn]   i
 Kallweit, Sören [VerfasserIn]   i
 Ebert, Volker [VerfasserIn]   i
Titel:SEALDH-II - an autonomous, holistically controlled, first principles TDLAS hygrometer for field and airborne applications
Titelzusatz:design-setup-accuracy/stability stress test
Verf.angabe:Bernhard Buchholz, Sören Kallweit, and Volker Ebert
Jahr:2017
Jahr des Originals:2016
Umfang:22 S.
Fussnoten:Published: 30 December 2016 ; Gesehen am 03.09.2018
Titel Quelle:Enthalten in: Sensors
Ort Quelle:Basel : MDPI, 2001
Jahr Quelle:2017
Band/Heft Quelle:17(2017) Artikel-Nummer 68, 22 Seiten
ISSN Quelle:1424-8220
Abstract:Instrument operation in harsh environments often significantly impacts the trust level of measurement data. While commercial instrument manufacturers clearly define the deployment conditions to achieve trustworthy data in typical standard applications, it is frequently unavoidable in scientific field applications to operate instruments outside these commercial standard application specifications. Scientific instrumentation, however, is employing cutting-edge technology and often highly optimized but also lacks long-term field tests to assess the field vs. laboratory performance. Recently, we developed the Selective Extractive Laser Diode Hygrometer (SEALDH-II), which addresses field and especially airborne applications as well as metrological laboratory validations. SEALDH-II targets reducing deviations between airborne hygrometers (currently up to 20% between the most advanced hygrometers) with a new holistic, internal control and validation concept, which guarantees the transfer of the laboratory performance into a field scenario by capturing more than 80 instrument internal “housekeeping” data to nearly perfectly control SEALDH-II’s health status. SEALDH-II uses a calibration-free, first principles based, direct Tuneable Diode Laser Absorption Spectroscopy (dTDLAS) approach, to cover the entire atmospheric humidity measurement range from about 3 to 40,000 ppmv with a calculated maximum uncertainty of 4.3% ± 3 ppmv. This is achieved not only by innovations in internal instrument monitoring and design, but also by active control algorithms such as a high resolution spectral stabilization. This paper describes the setup, working principles, and instrument stabilization, as well as its precision validation and long-term stress tests in an environmental chamber over an environmental temperature and humidity range of ΔT = 50 K and ΔRH = 80% RH, respectively.
DOI:doi:10.3390/s17010068
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Kostenfrei: Volltext ; Verlag: http://dx.doi.org/10.3390/s17010068
 Kostenfrei: Volltext: http://www.mdpi.com/1424-8220/17/1/68
 DOI: https://doi.org/10.3390/s17010068
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:absorption spectroscopy
 airborne
 calibration-free
 field
 hygrometer
 metrology
 SEALDH
 TDLAS
 trace gas measurement
 traceable
K10plus-PPN:1580611672
Verknüpfungen:→ Zeitschrift

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68301536   QR-Code
zum Seitenanfang