Diverter Uncertainty Less Than 0.01 percent for Water Flow Calibrations
Iryna V. Marfenko, Tsyh Tyan Yeh, John D. Wright
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.
diverter, diverter correction, primary standard, timing errors, uncertainty, uni-diverter, water flow standard
, Yeh, T.
and Wright, J.
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 November 29, 2023)