Bell-, Piston-Prover Bilateral-Comparison

Proposal, 20 May 2005

The goal of the project is to compare Piston provers in the flow rate range, between 0.3 m3/h and 9 m3/h as well as Bell provers in the range between 1 m3/h and 25 m3/h.

A rotary-piston meter will be used for the comparison of the provers. Each laboratory will calibrate a maximum form the following flow rates on their piston prover and on their bell prover.

Flow rates:

(0.3, 0.5, 1, 2, 3, 4, 5, 6, 8, 9, 14, 16, 18, 20, 25) m3/h.

The measure points have been chosen in such way that a comparison between Bell and Piston provers can also be done.


Further Information

Because the meter used in the context of this project is currently used as an internal transfer normal standard by METAS, we are not able to send it to other NMI’s.

Flow (F)
Henri Baumann, METAS (Switzerland)
Phone: +41 31 32 33 243
Fax: +41 31 32 33 210
Coordinating Institute
METAS (Switzerland)
Participating Partners
INRIM (Italy)