ASME_PTC-2-2001.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.PERFORMANCE TEST CODESDEFINITIONS AND VALUESASME PTC 2-2001Revision of ASME PTC 2-1980(R1985)An American National StandardCopyrighted 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:December 31,2002The next edition of this Code is scheduled for publication in 2006.There will be noaddenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technicalaspects of this Code.Interpretations are published on the ASME Web site under theCommittee Pages at http:/www.asme.org/codes/as they are issued.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 AmericanNational Standards.The Standards Committee that approved the code or standard was balanced to assurethat individuals from competent and concerned interests have had an opportunity to participate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatprovidesanopportunityfor 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 connectionwith any items mentioned in this document,and does not undertake to insure anyone utilizing a standardagainst liability for infringement of any applicable letters patent,nor assume any such liability.Users ofa code or standard are expressly advised that determination of the validity of any such patent rights,andthe risk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to beinterpreted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordancewith the established ASME procedures and policies,which precludes the issuance of interpretations byindividuals.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 EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2002 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights ReservedPrinted 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.CONTENTSForeword.vCommittee Roster.vii1Object and Scope.11.11Object.1.21Scope.2Measurement of Performance.22.12Introduction.2.22Measurement System.2.32Uncertainty of Measuring Systems.2.43Intrinsic Accuracy.2.53In Situ Conditions.2.63Observation Accuracy.2.73Sensing Accuracy.3Definitions.53.15Primary Definitions and Systems of Units.3.25Historical Definitions of Units of Measure.3.36Definitions for Use.4Letter Symbols.144.114Introduction.4.214Preferred Letter Symbols.4.314Special Principles of Letter Symbol Standardization.4.415Description of Terms.5Common Conversion Factors.17Figures2.23Measuring System.3.312Enthalpy-Entropy Diagram for Water.Tables5.118Conversion to SI(Metric)Units.5.220Conversion Factors for Pressure(force/area).5.321Conversion Factors for Specific Volume(volume/mass).5.4Conversion Factors for Specific Enthalpy and Specific Energy(energy/mass).225.5Conversion Factors for Specific Entropy,Specific Heat,and GasConstant(energy/mass?temperature).235.6Conversion Factors for Viscosity(force?time/area mass/length?time).245.725Conversion Factors for Kinematic Viscosity(area/time).iiiCopyrighted 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.5.8Conversion Factors for Thermal Conductivity(energy/time?length?temp.diff.power/length?temp.diff.).26Nonmandatory AppendicesA27Sources of Fluid and Material Data.B28Units of Measure for ASME Performance Test Codes.ivCopyrighted 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.FOREWORDPrecise definitions of terms and exact values of constants employed in the variousPerformance Test Codes of this Society are fundamentally important.This Code isintended to provide standard definitions and values required by each respectivePerformance