Diverter Uncertainty Less Than 0.01 percent for Water Flow Calibrations

Published

May 16, 2006

Author(s)

Iryna V. Marfenko, Tsyh Tyan Yeh, John D. Wright

Abstract

Measurement uncertainties introduced by liquid flow diverters are often one of the major contributors to the total uncertainty of static gravimetric liquid flow calibration facilities. This paper describes the primary water flow standard at NIST and tests conducted to validate and evaluate the uncertainty of a new diverter design called a uni-diverter . The evaluation tests compared the flow measurement results for the uni-diverter (operated with the collection / bypass unit) and the diverter operated in the traditional manner with a time correction (as described in ISO 4185). The new diverter was found to introduce less than 0.01% to the total uncertainty of the facility.

Proceedings Title

ISFFM | 6th | | Colorado Engineering Experiment Station, Inc (CEESI)

Conference Dates

May 16-18, 2006

Conference Location

Quer taro, 1, MX

Conference Title

International Symposium for Fluid Flow Measurement Conference Proceedings

Pub Type

Conferences

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Keywords

diverter, diverter correction, primary standard, timing errors, uncertainty, uni-diverter, water flow standard

Citation

Marfenko, I. , Yeh, T. and Wright, J. (2006), Diverter Uncertainty Less Than 0.01 percent for Water Flow Calibrations, ISFFM | 6th | | Colorado Engineering Experiment Station, Inc (CEESI), Quer taro, 1, MX, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=831030 (Accessed October 30, 2025)