In CMI there is a new primary facility Bell Prover with the range (1-250) m3/h was built up. This facility will be national standard of Czech Republic. The inter-comparisons using a rotary piston gas meter and three pieces of sonic nozzles will cover whole the range mentioned above.
Additionally, the thickness of the oil film on the bell will be investigated as for sinking mode as for rising mode of the Bell Prover.
Final Report 2018-11-02
The.project has been completed and the report can be downloaded here>>