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Inside Diameter Measurements for the Cylinder of a 20 L Piston Prover

Published

Author(s)

Jesus J. Aguilera, Tsyh Tyan Yeh, John D. Wright

Abstract

We made inside diameter measurements of a stainless steel cylinder used in a piston prover for hydrocarbon liquid flow measurements. We used a 3-point micrometer and two traceable setting rings to measure diameter at 12 radial positions at each of 21 lengthwise positions, on three different occasions. The diameter measurements showed a change in diameter of about 20 m near the middle of the cylinder and non-circularity at one end. These shape imperfections lead to a diameter uncertainty of 6 m (k=2) for the cylinder in its present form. The cylinder will be re-honed and chrome plated to improve the uniformity of diameter along the length and increase the surface hardness (to prevent scratches). Based on the measurements presented herein, diameter uncertainty of 2 m or less appear attainable by this measurement approach.
Proceedings Title
Annual International Symposium on Fluid Flow Measurement | 16th | | CEESI
Conference Dates
May 16-18, 2006
Conference Location
Queretaro, MX
Conference Title
International Symposium on Fluid Flow Measurement

Keywords

hydrocarbon liquid flow, inside diameter, piston prover, uncertainty

Citation

Aguilera, J. , , T. and Wright, J. (2006), Inside Diameter Measurements for the Cylinder of a 20 L Piston Prover, Annual International Symposium on Fluid Flow Measurement | 16th | | CEESI, Queretaro, MX, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=830966 (Accessed April 23, 2024)
Created March 23, 2006, Updated February 17, 2017