ASME_MFC-6M-1998-R2005.PDF

Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.REAFFIRMED 2005FOR CURRENT COMMITTEE PERSONNELPLEASE E-MAIL CSasme.orgThe American Society of Mechanical Engineers A N A M E R I C A N N A T I O N A L S T A N D A R D MEASUREMENT OF F L U I D FLOW I N P I P E S U S I N G VORTEX FLOWMETERS ASME MFC-6M-1998 Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:July 4,1998 This Standard will be revised when the Society approves the issuance of a new edition.There will be no addenda or written interpretations of the requirements of this Standard issued to this edition.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American National Standards.The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate.The proposed code or standard was made available for public review and comment which provides an opportunityfor additional public input from industry,academia,regulatory agencies,and the public-at-large.ASME does not approve,rate,or endorse any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable Letters Patent,nor assume any such liability.Users of a code or standard are expressly advised that determination of the validity of any such patent rights,and the risk of the infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s1 or person(s)affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.ASME accepts responsibilityfor onlythose interpretations issued in accordance with governing ASME procedures and policies which preclude the issuance of interpretations by individual,.volunteers.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical Engineers Three Park Avenue,New York,NY 10016-5990 Copyright(9 1998 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved,Printed in U.S.A.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORD(This Foreword is not a part of ASME MFC-6M-1998.)This Standard has been prepared by ASME/MFCC/SC16-Vortex Shedding Flowmeters.It is one of a series of standards covering a variety of devices that measure the.flow of fluids in closed conduits.The vortex shedding principle has become an accepted basis for fluid flow measurement.Meters based on this principle are available for measuring the flow of fluids ranging from cryogenic liquids to steam and high-pressure gases.Vortex shedding flowmeters are also referred to as vortex meters.Their designs are proprietary and,therefore,their design details and associated uncertainty bands cannot be covered in this document.However,these devices have in common the shedding of alternating pairs of vortices from some obstruction in the meter.The natural laws of physics relate the shedding frequency,5 to the volumetric flowrate,qy,of the fluid in the conduit.The vortex pairs can be counted over a given period of time to obtain total flow.This Standard contains the relevant terminology,test procedures,list of specifications,application notes,and equations with which to determine the expected performance character-istics.This Standard was approved by the American National Standards Institute on February 20,1998.111 Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME STANDARDS COMMllTEE MFFCC Measurement of Fluid Flow in Closed Conduits(The following is the roster of the Committee at the time of approval of this Standard.)OFFICERS R.W.Miller,Chair E.H.Jones,Vice Chair K.M.Padilla,Secretary COMMITTEE PERSONNEL N.A.Alston,Measurement&Control,Inc.C.J.Blechinger,Ford Motor Co.R.W.Caron,Ford Motor Co.G.P.Corpron,Equimeter,Inc.R.J.DeBoom,Micro Motion,Inc.R.H.Fritz,Saudi Aramco T.L.Hillburn,Turnbow Engineering Z.D.Husain,Texaco,Inc.E.H.Jones,Chevron Petroleum Technology T.M