Abstract
New measurement concepts and their further development lead to a broader range of relevant environmental parameters, such as gas concentrations. This paper presents a photoacoustic gas concentration measurement concept that does not require moving elements due to interferometric optics. The theoretical approach promises compensation for environmental influences such as relative humidity and changes in atmospheric pressure. In addition, practical measurements show a linear behavior concerning the gas concentration. Currently, the measurement system has a resolution for NO2 concentrations in the mid ppb range.
| Translated title of the contribution | Photoacoustic interferometry for gas concentration measurements |
|---|---|
| Original language | German |
| Pages (from-to) | S55-S60 |
| Journal | Technisches Messen |
| Volume | 90 |
| DOIs | |
| State | Published - 1 Sep 2023 |