Inter-Laboratory Comparison Results for Coriolis Mass Flow Meter Calibration Facilities

Dean M. Standiford, Mark Lee

Abstract

Inter-laboratory comparison testing is fundamental to assuring the accuracy of a laboratory’s stated measurement uncertainty, and a requirement for accreditation to ISO/IEC 17025:2005. Inter-laboratory comparisons using Micro Motion, Inc. (MMI), Coriolis mass flow meters support the claimed uncertainties of 0.014% (<i>k</i> = 2) for the high-accuracy liquid flow calibration facilities, and 0.03% (<i>k</i> = 2) for the production flow calibration facilities at Micro Motion, Inc.. This paper describes: multiple calibration methodologies, international traceability to National Metrology Institutes, test results and future design requirements of an inter-laboratory test program required to support multiple, accredited flow calibration centers around the globe.

Keywords

calibration, gravimetric, Transfer Standard Method, Proficiency testing, traceability

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IMEKO-TC9-2010-078.pdf

DOI

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IMEKO TC

TC9 - Flow Measurement

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