A few days ago, the “Constant Pressure and Constant Pressure Control System of the Standard Device for Gas Flow Standard Device†designed and developed by the Jiangsu Institute of Metrology won the utility model patent issued by the State Intellectual Property Office. This is also the second utility model patent obtained by the Institute this year, demonstrating the strong technical innovation capability of the Institute. In gas metering, temperature changes tend to have a greater impact on the accuracy of measurement, resulting in inaccurate measurement results. After repeated design, the gas flow metering research group of Jiangsu Provincial Institute of Metrology developed the "constant temperature and constant pressure control system". By controlling the temperature and pressure of the gas medium and the ambient temperature of the laboratory, the temperature and pressure during the calibration process were kept constant and resolved. The problem that the test result is affected by the temperature change is ensured, which ensures the accuracy and reliability of the test result. The positive pressure method gas flow standard device is a set of gas flow meter standard devices jointly developed by Jiangsu Provincial Institute of Metrology and Nanjing Ganghua Gas Co., Ltd., which can perform measurement verification on gas flow meters such as roots, precession vortex, turbine, vortex street , Calibration work. The utility model patent is used in the positive pressure method gas flow standard device, which can improve the accuracy of the gas device detection, effectively ensure the accuracy and reliability of the gas settlement instrument for trade settlement, and provide effective technical support for maintaining trade fairness.
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