| Zugriffsnummer | 27409 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Calibration of an ultrasonic flow meter for hot water |
| Autor(in); Institution |
Tawackolian, Karsten; 7.5, Wärme und Vakuum, PTB-Berlin
Büker, Oliver; 7.5, Wärme und Vakuum, PTB-Berlin
Hogendoorn, Jankees; KROHNE Altometer, THE NETHERLANDS
Lederer, Thomas; 7.5, Wärme und Vakuum, PTB-Berlin
|
| Quelle/Jahr | Flow Measurement and Instrumentation: 30 (2013), 166 - 173 |
| ISSN | 0955-5986 |
| DOI | |
| Verlag | Guildford, Surrey: Butterworth Scientific Ltd. |
| Freie Schlagworte | Durchflussmessung ; Heißwasser ; Ultraschall ; Kalibrierung ; feed water |
| Zusammenfassung | In this paper, the important systematic influences for an ultrasonic flow meter for feed water flow are identified to decide which characterisations have to be carried out in addition to a typical baseline calibration with water at 20 °C. One of the critical systematic temperature influences that affects most flow instruments is the thermal expansion of the meter body. From June 2009 to March 2010, the "Heat and Vacuum" department of the Physikalisch-Technische Bundesanstalt conducted a measurement campaign to characterise the influence of thermal expansion of a meter body on the calibration of an 8 inch (DN 200) five chord ultrasonic flow meter for feed water application in the temperature range from 4 °C to 85 °C and flow range from 50 m³/h to 900 m³/h. An overview of the procedures and facility used for the calibration is given and the measurement conditions under which the calibrations were performed are detailed. It is shown that a linear model of the thermal expansion effect is appropriate for the investigated conditions. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY-NC-ND 4.0 ; Creative Commons Attribution NonCommercial NoDerivatives 4.0 License |