QUANTIFYING IMPACTS ON THE MEASUREMENT UNCERTAINTY IN FLOW CALIBRATION ARISING FROM DYNAMIC FLOW EFFECTS
Rainer Engel, Hans-Joachim Baade
Abstract:
Traceability of the measurement units in fluid flow metering, as the state-of-the-art approach, is practiced as a so-called element-by-element method which relies upon the idealistic assumption that the measurement process in a flow calibration facility can be run under exact steady-state conditions, i.e. absolutely no fluctuations of the flow quantities are assumed to occur during the flow measurement process. Practical experiences, combined with a model-based analytical view of the measurement process in a flow standard, have revealed that dynamic impacts on the measurement uncertainty due to flow rate fluctuations have to be taken into account, in addition to the steady-state traceability chain.
Keywords:
liquid flow calibration, fluctuation of process parameters, measurement uncertainty analysis, traceability in fluid flow, element-by-element chain of traceability, dynamic system behavior
Download:
IMEKO-TC9-2013-014.pdf
DOI:
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Event details
IMEKO TC:
TC9
Event name:
FLOMEKO 2013
Title:

16th International Flow Measurement Conference

Place:
Paris, FRANCE
Time:
24 September 2013 - 26 September 2013
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