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Title: Establishment Of Air Flow Test Bench With Interact-Check Standards
Author: Li Chuanjing, Chen Yunqi, Guo Aihua, Wang Jizhong, Yue Jian, Gu Shunfeng
Source: Flomeko 2010
Year Published: 2010
Abstract: To enlarge the calibration capacity of existing air flow test bench in SIPAI with turbine master meters traced to bell prover, a newly-designed 4500 m3/h flow test bench using critical nozzles as secondary standard traced to pVTt primary standard is successfully paralleled to the existing flow test bench for doubling the flow rate of original calibration capacity. It is proved that not only different secondary standards in kind, traced to both volumetric and gravimetric standards respectively, can be integrated to form an entire flow test bench, but the dependability of the test bench can be increased simply by interact-check principle instead of multi-laboratory inter-comparison test campaign. This flow test bench has been running for months, as a result a control chart of measurement uncertainty has been made. It shows the layout of this test bench is feasible and beneficial to improve the performance of the facility. Along with the running time goes by, an acceptable limitation between the divergent test results obtained from turbine and nozzle benches in accordance with regular interact-check procedure can be determined.

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