Comparison of pVTt Methods Gas Flow Prover

Meng Tao, Wang Chi

Abstract

We compared 20 m3 and 2 m3 facilities of pVTt methods gas flow primary prover (pVTt prover) in Flow lab of National Institute of Metrology of China (NIM). We used sonic critical venturi nozzle (sonic nozzle) as transfer standard. The flow points of comparison are about 100 nm3/h and 150 nm3/h. We completed four comparison tests whose results are considered acceptable, whereas we found there was a little systematic error between the two facilities.

Keywords

Comparison, pVTt methods, Nozzle

Download

IMEKO-TC9-2004-021.pdf

DOI

-

IMEKO TC

TC9 - Flow Measurement

Back to the proceedings