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Uncertainty and Traceability for the CEESI Iowa Natural Gas Facility



Aaron N. Johnson, Tom Kegel


This paper presents an uncertainty analysis for the CEESI Iowa natural gas calibration facility. This facility calibrates flow meters up to flows of 10.7 actual m3/s, at nominal pressures of 174 kPa. Flow meters are calibrated by a set of nine turbine meter standards that are ultimately traceable to NIST. The analysis shows that the facility can achieve an uncertainty ranging from 0.28 to 0.30% at a 95% confidence level depending on flow.
Journal of Research (NIST JRES) -
109 No. 3


CEESI Iowa uncertainty analysis, CEESI Iowa: natural gas facility, CEESI traceability to NIST, correlation coefficient, critical flow venturi uncertainty, traceability, turbine meter uncertainty analysis


Johnson, A. and Kegel, T. (2004), Uncertainty and Traceability for the CEESI Iowa Natural Gas Facility, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 17, 2024)
Created September 1, 2004, Updated February 17, 2017