| Zugriffsnummer | 38372 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Development of a new fundamental measuring technique for the accurate measurement of gas flowrates by means of Laser Doppler Anemometry |
| Autor(in); Institution |
Dopheide, Dietrich; 1.3, Fluidmechanik, PTB-Braunschweig
Taux, Günter; 1.31, Strömungsmesstechnik, PTB-Braunschweig
Krey, Ernst-August; 1.31, Strömungsmesstechnik, PTB-Braunschweig
|
| Quelle/Jahr | Metrologia: 27 (1990), 2, 65 - 73 |
| ISSN | 0026-1394 |
| DOI | |
| Verlag | Bristol: IOP |
| Zusammenfassung | In the Physikalisch-Technische Bundesanstalt (PTB), a research test facility for the accurate measurement of gas (volume and mass) flowrates has been set up in the last few years on the basis of a laser Doppler anemometer (LDA) with a view to directly measuring gas flowrates with a relative uncertainty of only 0,1%. To achieve this, it was necessary to develop laser Doppler anemometry into a precision measuring technique and to carry out detailed investigations on stationary low-turbulence nozzle flow. The process-computer controlled test facility covers the flowrate range from 100 to 4000 m3/h (~ 0,03 - 1,0 m3/s, any flowrate being measured directly, immediately and without straggered arrangement of several flow meters. After the development was completed, several turbine-types gas meters were calibrated and international comparisons carried out. The article surveys the most significant aspects of the work and provides an outlook on future developments with regard to the miniaturization of optical flow and flowrate sensors for industrial applications. |
