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Title: Gas-Oil Piston-Prover, A New Concept To Realize Reference Values For High-Pressure Gas-Volume In The Netherlands
Author: M.P. Van Der Beek, R. Van Den Brink, I.J. Landheer
Source: Flomeko 2003
Year Published: 2003
Abstract: The paper describes the recently developed GOPP - Gas Oil Piston-Prover. This primary standard for high-pressure gas-volume is created to realize units of volume at various pressures for the Dutch National traceability-chain of high-pressure gas-flow measurements. The paper presents the design, working principle, simulation calculations and first results to realize a calibrated rotary-piston gas-meter. Furthermore, the actual physical process is compared to simulation calculations, and temperature characteristics are discussed. With internal harmonization processes at NMi VSL with input reference values from the three other primary standards, viz. DDD-conventional, DDD-extended pressure level and NMi TraSys, the aim of 0,1% uncertainty at 4.000 m3/h and p 60 bar is within reach. This will improve the uncertainty as well as the stability of the Dutch National reference values considerably.

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