Research on Online Value Checking Method of Flow Calibration System Based on Double Master Flowmeter Checking Technology

Bo Wu, Xiaopeng Li, Feng Gao, Tao Meng

Abstract

Whether the measurement performance of flow standard facility is normal or not directly affects the final flow measurement result, and the independent checking of quantity value is the key technical means to ensure the steady and reliable performance of flow calibration system. At present, there is a lack of quantitative verification methods for liquid flow standard facilities, and the existing researches mostly focus on expanding the range of operating parameters of facilities and improving their uncertainty level, etc, while the quantitative verification for flow facilities themselves has not been paid attention to and the relevant verification work has not been widely carried out. Based on the mutual verification of the measured values of double flowmeters, a set of intelligent online value verification method for weighing flow standard facility is designed and established. The theoretical basis of the method is described in detail, and the algorithm theoretical model and criterion are provided. Taking the weighing method micro flow standard facility of the National Institute of Metrology as the research object, the verification experiment test of the verification algorithm is carried out, and the results show that: The proposed online value verification method of flow calibration system has good adaptability and high verification accuracy, and can automatically and real-time monitor the operating status of the system in use, thus greatly improving the stability and reliability of the operation process of the facility, which is worthy of further popularization and application.

Keywords

Flow calibration system; Weighing method; Double master flowmeter; Mutual check; On-line value verification

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IMEKO-TC9-2019-150.pdf

DOI

10.21014/tc9-2022.150

IMEKO TC

TC9 - Flow Measurement

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