ASME MFC-6-2013 pdf free
ASME MFC-6-2013 pdf free.Measurement of Fluid Flow in Pipes Using Vortex Flowmeters.
This Standard
(a) describes the use of vortex flowmeters, including their physical components, principle of operation, installation, performance, influence factors, and calibration in a closed conduit running full for the measurement of volumetric flow rate and volume flow total of single-phase liquids or gases, including vapors such as steam
b) describes the use of vortex flowmeters in combination with one or more other process measurements for the inferential measurement of mass flow rate, mass flow total, base volumetric flow rate, base volume total, and heat flow metering
(c) is limited to full-bore flowmeters and does not include the special case of insertion-type flowmeters
2 REFERENCES AND RELATED DOCUMENTS
Unless otherwise indicated, the latest issue of a referenced standard shall apply.ASME MFC-1 M, Glossary of Terms Used in the Measurement of Fluid low in Pipes Publisher: The American Society of Mechanical Engineers (ASME), Two Park Avenue, New York, NY 10016 5990; Order Department: 22 law Drive, P.O. Box 2900,Fairfield, NJ 07007-2900 (www.asme.org) IEC 60529, Degrees of Protection Provided by Endosures (II’ Code) Publisher: International Electrotechnical Commission (IEC), 3, rue de Varembé, Case Postale 131, CI 1-1211 Genève 20, Switzerland /Suisse (wwiec.ch)
3 TERMINOLOGY AND SYMBOLS
3.1 Definitions From ASME MFC-IM Used in This Standard For the purposes of this Standard, the following definitions are particularly useful in describing the characteristics of vortex shedding flowmeters. ASME MFC-IM provides a more extensive collection of definitions and symbols pertaining to the measurement of fluid flow in closed conduits.
cavitation: the implosion of vapor bubbles formed after flashing when the local pressure rises above the vapor pressure of the liquid.
flashing: the formation of vapor bubbles in a liquid when the local pressure falls to or below the vapor pressure of the liquid, often due to local lowering of pressure because of an increase in the liquid velocity.K. factor: in pulses per unit volume, the ratio of the meter output in number of pulses to the corresponding total volume of fluid passing through the meter during a measured period. Variations in the K factor may be presented as a function of either the meter bore Reynolds number or the flow rate of a specific fluid at a specific set of thermodynamic conditions (see Fig. 9.2-1).
lorwest local pressure: the lowest pressure found in the meter. This is the pressure of concern regarding flashing and cavitation. Some of the pressure is recovered downstream of the meter.ASME MFC-6 pdf download.
