C9.1 Temporal Hygrometer Characterization: Design and First Test of a New, Metrological Dynamic Testing Infrastructure
- Event
- SMSI 2021
2021-05-03 - 2021-05-06
digital - Band
- SMSI 2021 - System of Units and Metreological Infrastructure
- Chapter
- C9 Advanced Testing Methods
- Author(s)
- F. Witt, F. Bubser, V. Ebert - Physikalisch-Technische Bundesanstalt, Brunswick (Germany), D. Bergmann - Technische Universität Braunschweig, Brunswick (Germany)
- Pages
- 308 - 309
- DOI
- 10.5162/SMSI2021/C9.1
- ISBN
- 978-3-9819376-4-0
- Price
- free
Abstract
A new, metrological-dynamic-testing-infrastructure (MetDynTI) for hygrometers is presented, comprising a flow test section driven by a switching water vapor (H2O) step change generator, capable of fast, well defined, H2O steps from 300 to up to 15000 μmol/mol. The step response of the test section is detected in real-time by means of an integrated, fast, direct tunable diode laser absorption spectroscopy (dTDLAS) hygrometer. The exact knowledge of the dynamic behavior of the driving section enables
the dynamic characterization of subsequent test hygrometers exposed to the H2O step change.