Abstract
The current paper reports the stability of a pressure dynamometer with a full scale pressure of 60 bar over nine years of operation. Since the stability of this digital pressure gauge depends on factors like repeatability, hysteresis, non-linearity, relative deviation etc, a systematic study has been carried out on each of these components. Finally, a comparison of the calibration factors and the estimated expanded uncertainty is made from the collected nine years calibration database. It has been found that the performance of the equipment showed consistent results for about 5 years after which a slight shift in the parameters described above has set in. But, the overall performance of the equipment remains excellent over the period studied within the limit of experimental uncertainty.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R.S. Dadson, S.L. Lewis and G.N. Peggs, The Pressure Balance: Theory and Practice, National Physical Laboratory, Department of Industry, Published by her Majesty’s Stationary Office, London, (1982).
F. Pavese and G.F. Molinar, Modern Gas-Based Temperature and Pressure Measurement, Edited by K.D. Timmerhaus, A.F. Clark and C. Rizzuto (Plenum Press, New York) (1992) pp. 337–343.
Guidelines for Estimation and Expression of Uncertainty in Measurement. NABL 141, (2000).
Expression of Uncertainty in Measurement, ISO Document-1995.
J.K.N. Sharma, K.K. Jain, A.K. Bandyopadhyay and J. Jager, International Intercomparison of Pressure Standards in the Pneumatic Pressure Region 0.4–4 MPa between NPL (India) and PTB (FRG) J. Phys. E:Sci Instrum., 21 (1988) p. 635.
A.K. Bandyopadhyay, S.Y. Woo, M. Fitzgerald, J. Man, A. Ooiwa, M. Jescheck, W. Jian, C.S. Fatt, T.K. Chan, K. Moore and A.A.E. Al-Tawil, Results of APMP Pressure Key Comparison APMP.M.P.-Klc in Gas Media and Gauge Mode from 0.4 MPa to 4.0 MPa, Metrologia Tech. Suppl., 40 (2003) 07002.
R.G. Driver, D.B. Olson, N. Dilawar and A.K. Bandyopadhyay, Final Report on Key Comparison APMP.SIM.M.P.-Klc: Bilateral Comparison between NIST (USA) and NPL (India) in the Pneumatic Pressure Region 0.4 MPa to 4.0 MPa, Metrologia Tech. Suppl., 44 (2004) 7002.
Manual DH-Budenberg, DH21000, (1985).
Document Manual Pressure Standards, NPLI — DP#1.06/Doc.3/CP#2, (2009)
D.A. Vijayakumar, S. Yadav, R.K. Sharma and A.C. Gupta, Studies on Pressure Measuring Equipments from 100 mbar to 5000 bar: Both Absolute and Gauge Pressures, J. Instrum. Soc. India, 27 (1998) 269–277.
S. Yadav, O. Prakash, V.K. Gupta and A.K. Bandyopadhyay, Studies on the Stabilities of Various Types of Industrial Pressure Measuring Devices. J. of Scientific & Industrial Research, 65 (2006) 721–724.
L. Dargent., Digital Piston Manometers: Are they Primary or Transfer Standards? Metrologia 30 (1993/94) 659–663.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Singh, J., Kumar, A., Sharma, N.D. et al. Reliability and long term stability of a digital pressure gauge (DPG) used as a standard- a case study. MAPAN 26, 115–124 (2011). https://doi.org/10.1007/s12647-011-0012-7
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12647-011-0012-7