API MPMS 7.4-2018 Manual of Petroleum Measurement Standards Chapter 7-Temperature Determination Section 4-Dynamic Temperature Measurement (SECOND EDITION).pdf

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1、Manual of Petroleum Measurement Standards Chapter 7Temperature DeterminationSection 4Dynamic Temperature MeasurementSECOND EDITION, JANUARY 2018Special NotesNeither API nor any of APIs employees, subcontractors, consultants, or other assigns make any warranty or representation, either express or imp

2、lied, with respect to the accuracy, completeness, or utility of the information contained herein, or assume any liability or responsibility for any use, or the results of such use, of any information or process disclosed in this publication, or represent that its use would not infringe upon privatel

3、y owned rights.Classified areas may vary depending on the location, conditions, equipment, and substances involved in any given situation. Users of this Standard should consult with the appropriate authorities having jurisdiction.Users of this Standard should not rely exclusively on the information

4、contained in this document. Sound business, scientific, engineering, and safety judgment should be used in employing the information contained herein.Users of Instructions should not rely exclusively on the information contained in this document. Sound business, scientific, engineering, and safety j

5、udgment should be used in employing the information contained herein.Where applicable, authorities having jurisdiction should be consulted.API is not undertaking to meet the duties of employers, manufacturers, or suppliers to warn and properly train and equip their employees, and others exposed, con

6、cerning health and safety risks and precautions, nor undertaking their obligations to comply with authorities having jurisdiction.Information concerning safety and health risks and proper precautions with respect to particular materials and conditions should be obtained from the employer, the manufa

7、cturer or supplier of that material, or the material safety data sheet.Where applicable, authorities having jurisdiction should be consulted.Work sites and equipment operations may differ. Users are solely responsible for assessing their specific equipment and premises in determining the appropriate

8、ness of applying the Instructions. At all times users should employ sound business, scientific, engineering, and judgment safety when using this Standard.All rights reserved. No part of this work may be reproduced, translated, stored in a retrieval system, or transmitted by any means, electronic, me

9、chanical, photocopying, recording, or otherwise, without prior written permission from the publisher. Contact the Publisher, API Publishing Services, 1220 L Street, NW, Washington, DC 20005.Copyright 2018 American Petroleum InstituteForewordNothing contained in any API publication is to be construed

10、 as granting any right, by implication or otherwise, for the manufacture, sale, or use of any method, apparatus, or product covered by letters patent. Neither should anything contained in the publication be construed as insuring anyone against liability for infringement of letters patent.The verbal

11、forms used to express the provisions in this document are as follows.Shall: As used in a standard, “shall” denotes a minimum requirement in order to conform to the standard.Should: As used in a standard, “should” denotes a recommendation or that which is advised but not required in order to conform

12、to the standard.May: As used in a standard, “may” denotes a course of action permissible within the limits of a standard.Can: As used in a standard, “can” denotes a statement of possibility or capability.This document was produced under API standardization procedures that ensure appropriate notifica

13、tion and participation in the developmental process and is designated as an API standard. Questions concerning the interpretation of the content of this publication or comments and questions concerning the procedures under which this publication was developed should be directed in writing to the Dir

14、ector of Standards, American Petroleum Institute, 1220 L Street, NW, Washington, DC 20005. Requests for permission to reproduce or translate all or any part of the material published herein should also be addressed to the director.Generally, API standards are reviewed and revised, reaffirmed, or wit

15、hdrawn at least every five years. A one-time extension of up to two years may be added to this review cycle. Status of the publication can be ascertained from the API Standards Department, telephone (202) 682-8000. A catalog of API publications and materials is published annually by API, 1220 L Stre

16、et, NW, Washington, DC 20005.Suggested revisions are invited and should be submitted to the Standards Department, API, 1220 L Street, NW, Washington, DC 20005, standardsapi.org.iiiContentsPage1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normative References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Terms and Definitions. . . . . . . . . . . . . . . . . . . . . . . . . .

18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 General Precautions . . . . . . . . . . .

19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.2 Safe

20、ty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.3 Equipment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21、. . . . . . . . . . . . . . 36 Equipment and Design Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22、. . . . . . . . . . . . . . . . . . . . . . . . . 46.2 Minimum Acceptable Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46.3 Thermowell. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56.4 Digital Thermometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Installation Requirements . . . . . . . . . . . . . . . .

24、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.2 Meters . . . . . . .

25、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97.3 Provers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26、 . . . . . . . . . . . 107.4 Test Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117.5 Signal Transmission to Remote Readout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27、 . . . . . . . . . . . . . . . . . . . . . 118 Procedures for Temperature Determination. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128.2 Temperature Measurement for Prover Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128.3 Temperature Measurement for Meter Proving . . . . . . . . . . . . . . . . . . . . . . . . .

29、. . . . . . . . . . . . . . . . . . . . . . . 128.4 Temperature Measurement for Online Density Meter Proving. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128.5 Temperature Measurement for Meter Ticket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30、. . . . . . . . . . . . 138.6 Use of Manual Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Accuracy Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31、. . . . . . . . . . . . . . . . . . . 139.1 Accuracy of Temperature Measurement Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139.2 Total Accuracy of the Dynamic Temperature Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32、 . . . . . 1510 Inspection, Verification, and Calibration Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1510.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33、. . . . . . . . . . . . . 1510.2 Traceability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1510.3 Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1510.4 Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1610.5 Calibration . . . . . . . . . . . . . . . . .

35、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1810.6 Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Annex

36、 A (normative) Comparison of Inspection, Verification, and Calibration Requirements. . . . . . . . . . . . . 21Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Tables1 Minimu

37、m Resolution of Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Minimum Accuracy Requirements of Temperature Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14A.1 Comparison of Inspecti

38、on, Verification and Calibration Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 22vIntroductionThe purpose of this standard is to describe the measurement practice to accurately determine the temperature of liquid hydrocarbons under dynamic (i.e. flowing) conditions. The accurate

39、 measurement of temperature is essential to accurately determine the average temperature of the hydrocarbon liquid transferred, for the purpose of obtaining the temperature and pressure volume correction factors (refer to API MPMS Chapter 11.1) to calculate the volume at standard conditions.vi1Chapt

40、er 7Temperature DeterminationSection 4Dynamic Temperature Measurement1 ScopeThis standard describes methods, equipment, installation, and operating procedures for the proper determination of the temperature of hydrocarbon liquids under dynamic conditions in custody transfer applications. This standa

41、rd describes the accuracy requirement and the calibration of the temperature measurement equipment.This standard does not cover dynamic temperature measurement of refrigerated, light hydrocarbon fluids or cryogenic liquids. 2 Normative ReferencesThe following standards and other industry publication

42、s contain provisions that, through reference in this text, constitute provisions of this standard. All standards are subject to revision, and parties to agreements based on this standard are encouraged to use the most recent editions of the standards indicated below:API Manual of Petroleum Measureme

43、nt Standards (MPMS) Chapter 1, Terms and Definitions, http:/chapter1.api.org Chapter 4 (All Relevant Sections), Proving Systems Chapter 5 (All Relevant Sections), Metering Systems Chapter 6 (All Relevant Sections), Metering Assemblies Chapter 7.1, Liquid in Glass Thermometers Chapter 12.2, Calculati

44、on of Liquid Petroleum Quantities Using Dynamic Measurement Methods Chapter 21.2, Electronic Liquid Volume Measurement Using Positive Displacement and Turbine MetersAPI Recommended Practice 500, Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I Di

45、vision 1 and Division 2API Recommended Practice 2003, Protection Against Ignitions Arising Out of Static, Lighting, and Stray CurrentsASME 1ASME PTC 19.3TW_2016, American National Standard for ThermowellsASTM 2 ASTM E1, Standard Specification for ASTM Thermometers ASTM E77, Standard Test Method for

46、Inspection and Verification of Liquid-in-glass Thermometers ASTM E344, Terminology Relating to Thermometry and Hydrometry1American Society of Mechanical Engineers, Two Park Avenue, New York, NY 10016-59902ASTM International, 100 Barr Harbor Drive, West Conshohocken, Pennsylvania 19428, www.astm.org2

47、SECTION 4DYNAMIC TEMPERATURE MEASUREMENT ASTM E644, Test Methods for Testing Industrial Resistance Thermometers ASTM E1137, Standard Specification for Industrial Platinum Resistance Thermometers ASTM 2251, Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids

48、 ASTM E2593, Standard Guide for Accuracy Verification of Industrial Platinum Resistance Thermometers ASTM E2877, Standard Guide for Digital ThermometersIACS 3E10, Test Specification for Type ApprovalNFPA 4National Electrical CodeNIST 5NIST Special Publication 250-22, Platinum Resistance Thermometer

49、Calibrations3 Terms and Definitions3.1digital thermometer (DCT) (referred to as Digital Thermometers)An electronic device (per ASTM E2877) consisting of a digital display and associated temperature sensing probe.3.2temperature sensorA temperature sensor is one part of a thermometer in which some physical change occurs with temperature and converts this change into a value on a scale, (e.g. the scale on a liquid-in-glass thermometer, a digital device that displays a unit of measure).3.3resistance temperature detector (RTD)A temperature measuring device that operates

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