Performance test codes require primary mass-flow accuracies that in many applications require laboratory quality calibration of differential pressure meters. It is also true that many performance tests are conducted at Reynolds numbers and flows well above the laboratories' capacities, and sound extrapolation methods had to be developed. Statistical curve fits and regression analyses by themselves, absent fluid-dynamic foundations, are not valid procedures for extrapolation. The ASME PTC 19.5-2004 discharge coefficient equations reproduced in this paper for nozzles, orifices, and venturis are suitable for use whenever calibration data are to be applied in a flow measurement and/or extrapolated to higher Reynolds numbers as necessary. The equations may also be used for uncalibrated differential pressure meters by using nominal values. It is necessary to note that the metering runs must be manufactured with dimensions, tolerances, smoothness, etc., and installed in strict accordance with ASME PTC 19.5 for these equations to be valid. Note that for compressible flow, the value of the expansion factor term in the PTC 19.5 equation must be the one corresponding to the published PTC 19.5 equation.
Skip Nav Destination
Article navigation
February 2010
Technical Briefs
Extrapolation and Curve-Fitting of Calibration Data for Differential Pressure Flow Meters
David R. Keyser,
David R. Keyser
Fellow ASME
Survice Engineering Co.
, Belcamp, MD 20653
Search for other works by this author on:
Jeffrey R. Friedman
Jeffrey R. Friedman
Fellow ASME
Siemens Energy, Inc.
, Orlando, FL
Search for other works by this author on:
David R. Keyser
Fellow ASME
Survice Engineering Co.
, Belcamp, MD 20653
Jeffrey R. Friedman
Fellow ASME
Siemens Energy, Inc.
, Orlando, FLJ. Eng. Gas Turbines Power. Feb 2010, 132(2): 024501 (4 pages)
Published Online: November 2, 2009
Article history
Revised:
October 17, 2008
Received:
December 6, 2008
Online:
November 2, 2009
Published:
November 2, 2009
Citation
Keyser, D. R., and Friedman, J. R. (November 2, 2009). "Extrapolation and Curve-Fitting of Calibration Data for Differential Pressure Flow Meters." ASME. J. Eng. Gas Turbines Power. February 2010; 132(2): 024501. https://doi.org/10.1115/1.3126778
Download citation file:
Get Email Alerts
Cited By
Shape Optimization of an Industrial Aeroengine Combustor to reduce Thermoacoustic Instability
J. Eng. Gas Turbines Power
Dynamic Response of A Pivot-Mounted Squeeze Film Damper: Measurements and Predictions
J. Eng. Gas Turbines Power
Review of The Impact Of Hydrogen-Containing Fuels On Gas Turbine Hot-Section Materials
J. Eng. Gas Turbines Power
Effects of Lattice Orientation Angle On Tpms-Based Transpiration Cooling
J. Eng. Gas Turbines Power
Related Articles
Theoretical Analysis of Experimentally Observed Perplexing Calibration Characteristics of Ball-in-Vortex Flow-Meter
J. Fluids Eng (September,2005)
A Comparison Between Orifice and Flow Nozzle Laboratory Data and Published Coefficients
J. Fluids Eng (June,1974)
Review of Critical Flowmeters for Gas Flow Measurements
J. Basic Eng (December,1962)
Problems in Measuring Steam Flow at 1250 Psia and 950 F With Nozzles and Orifices
Trans. ASME (July,1958)
Related Proceedings Papers
Related Chapters
Antilock-Braking System Using Fuzzy Logic
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Pulsation and Vibration Analysis of Compression and Pumping Systems
Pipeline Pumping and Compression Systems: A Practical Approach, Second Edition
Pulsation and Vibration Analysis of Compression and Pumping Systems
Pipeline Pumping and Compression System: A Practical Approach, Third Edition