The pVTt method reference standard gas flow standard device passed the standard assessment

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[China Instrument Network Instrument R&D] Recently, the pVTt standard reference gas flow standard device newly installed by the Jiangsu Provincial Quality and Technical Supervision Gas Flow Measurement Center successfully passed the National Institute of Metrology Construction Evaluation. This is the first domestic device that simultaneously implements normal pressure and positive pressure methods for detecting sonic nozzles and 0.5-level high-precision flowmeters.


The assessment work was chaired by Dr. Li Chunhui of the China Institute of Metrology, and the assessment was conducted through field tests. Dr. Li conducted a careful review of the test results and stated that the test results of the sonic nozzle and the standard flow meter were very good. They completely met the requirements for establishment of the standard and passed the bid.
In June last year, the National Metrology Institute sent a high evaluation to the center when it visited the center; in August, the National Institute of Metrology carried out acceptance tests on the equipment and evaluated that the equipment is the performance indicator of the existing five types of equipment in the same type in China. The best device.
The device is not only the first device in China to realize both normal pressure and positive pressure detection for sonic nozzles and 0.5-grade high-precision flowmeters, but it is also the device with the largest detection range in the international standard. Grade gas meters perform type evaluation experiments, carry out extensive technology research and development, represent countries in large-scale comparisons and metrology performance experiments, and will directly serve the national key projects such as technical institutions, research institutes, and petroleum aviation.
(Original Title:Jiangsu Gas Flow Center pVTt Method for Gas Flow Standard Equipment Establishment Successful)

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