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Gas flow calibrations performed at the National MetrologyInstitute of South Africa (NMISA)

Published online by Cambridge University Press:  03 November 2014

D. Jonker  and
E.P. Tarnow
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Abstract

The National Metrology Institute of South Africa (NMISA) Gas Flow Laboratory providestraceability to the South African Industry for gas flow measurements. A new primarystandard for gas flow calibrations was purchased and commissioned. With three flow cells,a flow range of 0.5 mL/min to 50 000 mL/min is covered. The main features of this standardare accuracy, speed and convenience. This paper describes the activities of the NMISA GasFlow Laboratory – a discussion of the primary standard, the validation thereof,calibration methods for client instrumentation, analysis of measurement results and thecalculation of measurement uncertainties.

Keywords

Traceabilitygas flow measurementsprimary standardcalibration methodsmeasurement uncertainties
Type
Research Article
Information
International Journal of Metrology and Quality Engineering , Volume 5 , Issue 3 , 2014 , 303
Copyright
© EDP Sciences 2014

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References

D. Jonker, E.P. Tarnow, NMISA new gas flow calibration facility, Proceedings of Test & Measurement 2013 Conference & Workshop (2013)
Bios Met Lab Series ML-800 User Manual, 2011, Bios International Corporation, MK-01-33 Rev. J.
D. Jonker, NMISA-12-0218, Validation report of the Bios Met Lab ML-800 primary flow standard, 2013