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    API MPMS 5.6-2002 Manual of Petroleum Measurement Standards Chapter 5-Metering Section 6-Measurement of Liquid Hydrocarbons by Coriolis Meters (FIRST EDITION)《石油计量标准手册.第5章-计量.第6节 -.pdf

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    API MPMS 5.6-2002 Manual of Petroleum Measurement Standards Chapter 5-Metering Section 6-Measurement of Liquid Hydrocarbons by Coriolis Meters (FIRST EDITION)《石油计量标准手册.第5章-计量.第6节 -.pdf

    1、Manual of PetroleumMeasurement StandardsChapter 5MeteringSection 6Measurement of Liquid Hydrocarbons by Coriolis MetersFIRST EDITION, OCTOBER 2002REAFFIRMED, NOVEMBER 2013Manual of PetroleumMeasurement StandardsChapter 5MeteringSection 6Measurement of Liquid Hydrocarbons by Coriolis MetersMeasuremen

    2、t CoordinationFIRST EDITION, OCTOBER 2002REAFFIRMED, NOVEMBER 2013All rights reserved. No part of this work may be reproduced, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission from the publisher

    3、. Contact the Publisher, API Publishing Services, 1220 L Street, N.W., Washington, D.C. 20005.Copyright 2002 American Petroleum InstituteSPECIAL NOTESAPI publications necessarily address problems of a general nature. With respect to partic-ular circumstances, local, state, and federal laws and regul

    4、ations should be reviewed.API is not undertaking to meet the duties of employers, manufacturers, or suppliers towarn and properly train and equip their employees, and others exposed, concerning healthand safety risks and precautions, nor undertaking their obligations under local, state, or fed-eral

    5、laws.Information concerning safety and health risks and proper precautions with respect to par-ticular materials and conditions should be obtained from the employer, the manufacturer orsupplier of that material, or the material safety data sheet.Nothing contained in any API publication is to be cons

    6、trued as granting any right, byimplication or otherwise, for the manufacture, sale, or use of any method, apparatus, or prod-uct covered by letters patent. Neither should anything contained in the publication be con-strued as insuring anyone against liability for infringement of letters patent.Gener

    7、ally, API standards are reviewed and revised, reaffirmed, or withdrawn at least everyfive years. Sometimes a one-time extension of up to two years will be added to this reviewcycle. This publication will no longer be in effect five years after its publication date as anoperative API standard or, whe

    8、re an extension has been granted, upon republication. Statusof the publication can be ascertained from the API Upstream Segment telephone (202) 682-8000. A catalog of API publications and materials is published annually and updated quar-terly by API, 1220 L Street, N.W., Washington, D.C. 20005.This

    9、document was produced under API standardization procedures that ensure appropri-ate notification and participation in the developmental process and is designated as an APIstandard. Questions concerning the interpretation of the content of this standard or com-ments and questions concerning the proce

    10、dures under which this standard was developedshould be directed in writing to the standardization manager, American Petroleum Institute,1220 L Street, N.W., Washington, D.C. 20005. Requests for permission to reproduce ortranslate all or any part of the material published herein should also be addres

    11、sed to the gen-eral manager.API standards are published to facilitate the broad availability of proven, sound engineer-ing and operating practices. These standards are not intended to obviate the need for apply-ing sound engineering judgment regarding when and where these standards should beutilized

    12、. The formulation and publication of API standards is not intended in any way toinhibit anyone from using any other practices.Any manufacturer marking equipment or materials in conformance with the markingrequirements of an API standard is solely responsible for complying with all the applicablerequ

    13、irements of that standard. API does not represent, warrant, or guarantee that such prod-ucts do in fact conform to the applicable API standard.FOREWORDThis standard may involve hazardous materials, operations, and equipment. This standarddoes not purport to address all of the safety problems associa

    14、ted with its use. It is the respon-sibility of the user of this standard to establish appropriate safety and health practices anddetermine the applicability of regulatory limitations prior to use.API publications may be used by anyone desiring to do so. Every effort has been made bythe Institute to

    15、assure the accuracy and reliability of the data contained in them; however, theInstitute makes no representation, warranty, or guarantee in connection with this publicationand hereby expressly disclaims any liability or responsibility for loss or damage resultingfrom its use or for the violation of

    16、any federal, state, or municipal regulation with which thispublication may conflict.Suggested revisions are invited and should be submitted to Measurement Coordination,American Petroleum Institute, 1220 L Street, N.W., Washington, D.C. 20005.iiiCONTENTSPage0 INTRODUCTION . . . . . . . . . . . . . .

    17、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 FIELD OF APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    18、 . . . . . . . . . . . . . . . 13 DEFINITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 REFERENCED PUBLICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 ABBREVIATIONS. . . . . . . . .

    19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 SYSTEM DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46.1 Flow Sensor Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    20、 . . . . . . . . . 46.2 Coriolis Transmitter Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66.3 System Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 SAFETY. . . . . . . . . . . . . . . . . . . . . . . . .

    21、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97.1 Tube Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 OPERATIONS/PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    22、 . . . 118.1 Start-up of Metering Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118.2 Effects of Fluid Properties, Operating, and Installation Conditions on Coriolis Meter Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    23、. . 118.3 Considerations for Changing the Stored Zero Value in the Flowmeter (Rezeroing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128.4 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    24、139 PROVING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139.1 Proving Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1410 AUDITING AND REPORTING REQUIREMENTS . . . . . .

    25、. . . . . . . . . . . . . . . . . . . 1810.1 Configuration Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1810.2 Quantity Transaction Record (QTR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1810.3 Event Log. . . . . . . .

    26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1810.4 Alarm and Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18APPENDIX A PRINCIPLE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . .

    27、 . . . . . . 19APPENDIX B FACTORY CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21APPENDIX C PROVING FORMS FOR METERS WITH MASS OUTPUTS . . . . . . 23APPENDIX D PROVING FORMS FOR METERS WITH VOLUME OUTPUTS . . . 31APPENDIX E CALCULATIONS . . . . . . . . . . . . . .

    28、. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Tables1 Typical Number of Proving Runs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16C-1 Density Conversion Factors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23C-2 Buoyancy Co

    29、rrection Factors (Not applicable to closed, pressurized vessels) . 23E-1 Coriolis MeterProving Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39E-2 Mass Discrimination Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41E-3 Density

    30、Discrimination Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41E-4 Correction Factor Discrimination Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41vPageFigures1 Typical Coriolis Meter Accuracy Specification . . . . . . . . . . . . . . . .

    31、. . . . . . . . . . 62 Schematic for Coriolis Meter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Factors Affecting Coriolis Meter Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10A-1 Coriolis Force Illustration . . . . . . . . . . . . . . . . . .

    32、 . . . . . . . . . . . . . . . . . . . . . . . . 19B-1 Calibration System Schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21C-1 Proving Calculations: Conventional Pipe ProverCoriolis Meter Mass . . . . . 24C-2 Proving Calculations: Small Volume ProverCoriolis M

    33、eter Mass . . . . . . . . . 25C-3 Proving Calculations: Gravimetric Tank ProverCoriolis Meter Mass . . . . . . 26C-4 Proving Calculations: Volumetric Tank ProverCoriolis Meter Mass . . . . . . . 27C-5 Proving Calculations: Volumetric Master MeterCoriolis Meter Mass . . . . . . 28C-6 Proving Calculat

    34、ions: Mass Master MeterCoriolis Meter Mass . . . . . . . . . . 29D-1 Proving Calculations: Conventional Pipe ProverCoriolis Meter Volume. . . . 32D-2 Proving Calculations: Small Volume ProverCoriolis Meter Volume . . . . . . . 33D-3 Proving Calculations: Gravimetric Tank ProverCoriolis Meter Volume

    35、. . . . 34D-4 Proving Calculations: Volumetric Tank ProverCoriolis Meter Volume . . . . . 35D-5 Proving Calculations: Volumetric Master MeterCoriolis Meter Volume . . . . 36D-6 Proving Calculations: Mass Master MeterCoriolis Meter Volume. . . . . . . . . 37vi1Chapter 5MeteringSection 6Measurement of

    36、 Liquid Hydrocarbons by Coriolis Meters0 Introduction0.1This standard is intended to describe methods toachieve custody transfer levels of accuracy when a Coriolismeter is used to measure liquid hydrocarbons.0.2Coriolis meters measure mass flow rate and density. Itis recognized that meters other tha

    37、n the types described in thisdocument are used to meter liquid hydrocarbons. This publi-cation does not endorse or advocate the preferential use of aCoriolis meter nor does it intend to restrict the developmentof other types of meters. Those who use other types of metersmay find sections of this pub

    38、lication useful. 1 Scope1.1This standard is applicable to custody transfer applica-tions for liquid hydrocarbons. Topics covered are:a. Applicable API standards used in the operation of Coriolismeters.b. Proving and verification using both mass- and volume-based methods.c. Installation.d. Operation.

    39、e. Maintenance.1.2The mass- and volume-based calculation proceduresfor proving and quantity determination are included inAppendix E.1.3Although the Coriolis meter is capable of simulta-neously determining density, this document does not addressits use as a stand-alone densitometer. See API MPMSChapt

    40、er14.6 for this type of application. The measured density fromthe Coriolis meter is used to convert mass to volume.2 Field of ApplicationThe field of application of this document is any division ofthe petroleum industry where dynamic flow measurement ofapplicable fluids is desired. The use of Coriol

    41、is meters for alter-nate applications or fluids may be addressed within other chap-ters of the API MPMSand are not precluded by this standard.3 Definitions3.1 accessory equipment:Any additional electronic ormechanical computing, display, or totalization equipmentused as part of the metering system.3

    42、.2 base conditions:Defined pressure and temperatureconditions used in the custody transfer measurement of fluidvolume and other calculations. Base conditions may bedefined by regulation or contract. In some cases, base condi-tions are equal to standard conditions, which within the U.S.are usually 14

    43、.696 psia and 60F, and in other regions101.325 kPa (absolute) and 15C.3.3 base density:The density of the fluid at base condi-tions. 3.4 calibration:The process of utilizing a referencestandard to determine a coefficient which adjusts the outputof the Coriolis transmitter to bring it to a value whic

    44、h iswithin the specified accuracy tolerance of the meter over aspecified flow range. This process is normally conducted bythe manufacturer.3.5 cavitation:Phenomenon related to and followingflashing if the pressure recovers and the vapor bubbles col-lapse (implode). Cavitation will cause a measuremen

    45、t errorand can damage the sensor.3.6 Coriolis meter:Also referred to as Coriolis massmeter or Coriolis force flowmeter. A Coriolis meter is adevice which by means of the interaction between a flowingfluid and the oscillation of a tube(s), measures mass flow rateand density. The Coriolis meter consis

    46、ts of a sensor and atransmitter. 3.7 Coriolis meter factor, mass or volume (MF,MFm, MFv):A dimensionless number obtained by dividingthe actual quantity of fluid passed through the meter (as deter-mined by proving), by the quantity registered by the meter.For subsequent metering operations, the actua

    47、l quantity isdetermined by multiplying the indicated quantity by themeter factor.3.8 Coriolis transmitter:The electronics associated witha Coriolis meter which interprets the phase shift signal fromthe sensor, converts it to a meaningful mass flow rate (repre-sented in engineering units or a scaled

    48、value), and generates adigital or analog signal representing flow rate and/or quantity.Most manufacturers also use it to drive the sensor tubes,determine fluid density, and calculate a volumetric flow rate.3.9 flashing:A phenomenon which occurs when the linepressure falls to or below the vapor press

    49、ure of the liquid,often due to local lowering of pressure because of an increasein the liquid velocity. 2CHAPTER5METERING3.10 flowing density:The density of the fluid at actualflowing temperature and pressure.3.11 flow sensor:A mechanical assembly consisting of:housing:The means of providing environmentalprotection. This may or may not provide secondarycontainment.measurement sensor(s):Sensors to monitor oscil-lations and to detect the effect of Coriolis forces. Theseare also referred to as pickups or pickoffs.support structure:A means for supporting thevibrating c


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