18th International Flow Measurement Conference - FLOMEKO 2019, Lisbon, 26-28, June, 2019, Portugal
Freie Schlagworte
Uncertainty ; traceability ; hig-pressure natural gas flow
Zusammenfassung
Currently all measurement capabilities for high-pressure gas flows in Germany are based on a single traceability chain. However, there are three primary standards available that can be made traceable without mutual de-pendencies. In this study PTB investigates the benefits of combining three independent traceability chains. The applied method is identical to the harmonization of the high-pressure cubic metre of natural gas. For two G1000 transfer reference meters the measurement uncertainty decreases from 0.110% to 0.089%. For the working standards the CMCs decrease from 0.156% and 0.175% to 0.142% and 0.163% respectively. When only two chains are used the CMCs of the working standards improve with approximately 0.01%. More scenarios are explored. The development of a new primary standard with a CMC of 0.10% has the potential to improve the CMCs of the working standards with approximately 0.02%.
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Themenbereich der Metrologie
Durchfluss
Zitierung
Grinten, J. V. D. & Mickan, B. (2019). Combining three independent traceability chains for high-pressure gas flow in Germany. 18th International Flow Measurement Conference - FLOMEKO 2019, Lisbon, 26-28, June, 2019, Portugal.
