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Uncertainty analysis of NIST’s 20 liter hydrocarbon liquid flow standard

Abstract

The National Institute of Standards and Technology (NIST) uses a bi-directional 20 L-displacement piston prover as its primary standard for measuring hydrocarbon liquid flows ranging from 1.86 × 10−5 m3/s (0.3 gpm) to 2.6 × 10−3 m3/s (40 gpm). Our analysis shows that the prover’s uncertainty over this flow range is 0.074 % (k = 2, corresponding to a 95 % confidence interval). Using a dual rotor turbine meter as the transfer standard, we compare the new 20 L piston prover standard with NIST’s other hydrocarbon liquid standards and NIST’s water flow standard. The results are consistent with the presented uncertainty analysis.

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Correspondence to Aaron N. Johnson.

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Johnson, A.N., Crowley, C.J. & Yeh, T.T. Uncertainty analysis of NIST’s 20 liter hydrocarbon liquid flow standard. MAPAN 26, 187 (2011). https://doi.org/10.1007/s12647-011-0018-1

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  • DOI: https://doi.org/10.1007/s12647-011-0018-1

Keywords

  • Uncertainty Analysis
  • Versus Versus Versus Versus
  • Uncertainty Budget
  • Reverse Osmosis Water
  • Flow Standard