Measurement Errors of Piston Pressure Gauge for Mass Weights and Pressure Weights
PANG Gui-bing1,YANG Yi1,FAN Shuang-jiao1,YANG Yuan-chao2
1. College of Mechanical Engineering and Automation,Dalian Polytechnic University,Dalian,Liaoning 116034,China
2. National Institute of Metrology,Beijing 100029,China
Abstract：The types of weights used in existing piston pressure gauges are pressure nominal weights and mass nominal weights,both of which produce different principles of error and lead to different outcome of error. For free distortion pistons,a pressure error model is developed based on the effect of the deformation coefficient on the effective area of the piston,and a general formula for the relative error in pressure generated by using pressure nominal weights and mass nominal weights is derived. Using a piston pressure gauge with a measurement range of 10 to 510MPa as the object of study,error calculations and comparative analyses are carried out to obtain the variation pattern of the pressure errors of the two types of weights. The results show that,under the same conditions,the pressure scale weights produce an additional error of up to -0.0041%within each pressure band due to the repeated use of small,unnumbered weights compared to the mass scale weights.
Wang H Y, Hu S S, Liu Z S, et al. High Precision Deep Sea Pressure Simulation Method with Double Pistons［J］. Acta Metrologica Sinica, 2021, 42(2): 199-203.
Wang L, Sheng X Y. Piston-Cylinder Assembly Design of the Digital Piston Pressure Gauge［J］. Measurement & Control Technology, 2012, 31(7): 13-15.
Yang Y C, Yue J, Li Y H. The Effective Area and Distortion Coefficient of CCM. P-K13 Transfer Standard and the Analysis of Uncertainty ［J］. Acta Metrologica Sinica, 2011, 32(5): 441-445.
Zhang Y Q, Zeng L,Chen Y F. Study and Application Theoretical Model of Controlled-clearance Piston Pressure Gauge［J］. China Inspection Body & Laboratory, 2020, 28(5):17-20.
Zhou Y R, Lin Z H, Zhang Z L. The Error Analysis and Correction about no Order Weights of Piston Gauge［J］. China Instrumentation, 2022(4): 62-65.
［18］
Dadson R S, Lewis S L, Peggs G N. The Pressure Balance: Theory and Practice［M］. London: HMSO, 1982.
Scherschligt J, Cross C D, Quintavalle J, et al. Automated Piston Gauge Calibration System［J］. NCSLI Measure, 2018, 12(1): 42-45.
Wang C, Liu H Y, Yang Y C, et al. Design of Key Parameters of Piston-cylinder Assembly of 500MPa Piston Pressure Gauge［J］. Acta Metrologica Sinica, 2021, 42(12): 1624-1628.
Zhang J L. Verification of the weight quality of the gas piston manometer pressure special ［J］. Metrology & Measurement Technology, 2014,34(4):83-85.
Kajikawa H, Ide K, Kobata T. Precise determination of the pressure distortion coefficient of new controlled-clearance piston-cylinders based on the Heydemann-Welch model［J］. Review of Scientific Instruments, 2009, 80(9): 095101.
［16］
Yang Y C, Yue J. Determination of the distortion coefficient of a 500 MPa free-deformation piston gauge using a controlled-clearance one up to 200 MPA［C］//XX IMEKO World Congress Metrology for Green Growth. Busan, Korea, 2012.
［13］
Sabuga W, Molinar G, Buonanno G, et al. Calculation of the distortion coefficient and associated uncertainty of PTB and LNE 1 GPa pressure balances using finite element analysis—EUROMET project 463［J］. Metrologia, 2005, 42(6): S202.
［15］
Fitzgerald M P, Sutton C M. Pressure balance elastic distortion: experiment versus theory［J］. Metrologia, 2005, 42(6): S239.
［17］
Rab S, Yadav S, Haleem A. A laconic capitulation of high pressure metrology［J］. Measurement, 2022, 187: 110226.
2023, Vol. 44 
