| Zugriffsnummer | 24633 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | LDA utilisation in flow measurement |
| Autor(in); Institution |
Müller, Harald; 1.4, Gase, PTB-Braunschweig
Strunck, Volker; 1.4, Gase, PTB-Braunschweig
Pape, Norbert; 1.4, Gase, PTB-Braunschweig
Kampe, Jessica; 1.4, Gase, PTB-Braunschweig
|
| Quelle/Jahr | Metering energy and fluid flows. PTB-Mitteilungen: 119 (2009), 1, spec. issue, 11 - 15 |
| ISSN | 0030-834X |
| Verlag | Bremerhaven: Wirtschaftsverl. NW |
| Freie Schlagworte | Laser Doppler Anemometer ; flow velocity measurement ; non interacting ls ; flow rate |
| Zusammenfassung | As a matter of principle, all measurement results in the field of flow measurement are not only defined by the quantity of the measurands to be determined, but also by the retroaction of the measuring instruments on the flow, which depends on the specific properties of the device. In particular the use of non-interacting optical measurement procedures therefore offers a high potential to reduce the measurement uncertainties for the realisation and dissemination of the units of flow measurement quantities. For flowing media, especially the volume flowrate is a decisive measurand which can be traced back directly via the measurement of flow velocities or via the analysis of flow velocity profiles and fields of cross-sectional areas in measuring chambers, pipes or ventilation shafts. The accurate, non-interactive and thus laser-optical flow velocity measurement in flowing media is therefore of paramount importance. In this context, laser Doppler anemometers play a particular role: as high-accuracy measuring instruments, they make it possible to measure flow velocities in optically transparent media with typical measurement uncertainties in the range of 0.1 % with high spatial and temporal resolution. Therefore, laser Doppler anemometers, which were traced back (calibrated) by PTB, are becoming increasingly used in calibration laboratories, test facilities for the flowrate measurement of air and natural gas, and at large-scale test rigs for fluid and heat measurement as transfer standards for the recording of the measurand "flow velocity". In dt. Sprache u.d.T.: LDA-Einsatz in der Strömungsmesstechnik |
