1、ANSI B109.3 Approved April 13,2000 ROTARY-TYPE GAS DISPLACEMENT METERS Secretariat American Gas Association 400 North Capitol Street, NW, 4h Floor Washington, DC 20001 U.S.A. Catalog No. XQOOiO June 2000 STD*AGA BL09.3-ENGL 2000 E 9008836 OOULYO8 872 First Edition-i973 Second Editiorr-1986 Third Edi
2、tion-I992 Fourth Edition-2ooO American Gas Association 400 a or th capitol st., NW. 4* noor Washinpon, DC 20001 U.S.A. Catalog No. XQOiO Approved April 13,2000 AMERICAN NATIONAL STANDARDS INSTITUTE, INC. Copyright O 2000, American Gas Association All rights reserved STDmAGA B107-3-ENGL 2000 m 900883
3、b 0001407 706 m CONTENTS CONTENTS DISCLAIMER AND COPYRIGHT . PREFACE . HISTORY OF THE DEVELOPMENT OF THIS STANDARD ACCREDITED STANDARDS COMMITTEE B1W SCOPE . PART I .- DEFINITIONS . PART II CONSTRUCTION REQUIREMENTS FOR QUALIFYING NEW TYPE METERS . i iii iV vi 1 2 2 7 7 V 2.1 SCOPE 7 2.2 DIMENSIONS
4、7 2.3 MAXIMUM ALLOWABLE OPERATING PRESSURE (MAOP) . 7 2.4 STRENGTH OF METER CONNECTIONS 8 2.5 MEER INDEX WINDOW IMPACT RESISTANCE TESTS . 8 2.6 DESIGN SAFETY FACTOR . 8 2.7 DIFFERENTIAL PRESSURE TAPS : 8 2.8 METER IDENTIFICATION . 9 2.9 FLOW DIRECTION IDENTIFICATION 9 2.10 METER OUTPUT REGISTRATION
5、IDENTIFICATION 9 2.1 1 PROTECTION OF METERS . 9 2.12 MECHANICAL METER INDEX 9 2.13 CORROSION AND CHEMICAL RESISTANCE OF INTERNAL PARTS . 10 2.14 CORROSION AND CHEMICAL RESISTANCE OF EXTERNAL PARTS 10 2.15 TEMPERATURE RESISTANCE TEST 11 PART III 12 12 3.1 SCOPE 12 3.2 RATED CAPACIY 12 3.3 ACCURACY 12
6、 3.4 NOISE AND VIBRATION 12 3.5 STARTING RATE TEST FOR NEW TYPE METERS . 13 3.6 PRESSURE AND LEAK TEST CONDITIONS FOR NEW METERS . 13 3.7 DIFFERENTIAL PRESSURE TEST CONDITIONS 13 PART IV 14 IN-SERVICE PERFORMANCE 14 4.1 SCOPE 14 4.2 TEST CONDITIONS 14 PART V 15 METER INSTALLATION 15 5.1 SCOPE 15 5.2
7、 GENERAL 15 5.3LOCATION 15 5.4 IN STALLATION 15 5.5 METER SHUT OFF . 16 5.6 METER SUPPORT . 16 5.7 METER SIZING . 16 5.8 SPACING OF METERS . 16 5.9 IDENTIFICATION . 16 5.11 SPECIAL SERVICE . 16 5.12 DUAL METER INSTALLATIONS . 16 PART VI . . 17 AUXILIARY DEVICES FOR GAS METERS . 17 6.1SCOPE 17 6.2 PR
8、ESSURE SYSTEM 19 6.3 TEMPERATURE SYSTEM . 19 6.4 VOLUME INDICATOR . 21 PERFORMANCE REQUIREMENTS FOR QUALIFYING NEW METERS AND NEW-TYPE METERS 4.3 IN-SERVICE PERFORMANCE PROGRAMS 14 5.10 ON-SITE INSPECTION . 16 i STD*AGA BLOSm3-ENGL 2000 900883b 0001410 42“ D 6.5 INSTRUMENT CHART DRIVES . 6.6 CIRCULA
9、R CHARTS 6.7 RECORDERS . 6.8 AUTOMATIC INTEGRATORS 6.9 CONSTANT-PRESSURE-COMPENSATING INDEX . 6.10 REMOTE METER READING DEVICES . 6.1 1 INSTRUMENT ADAPTOR PLATES 6.12 INSPECTION AND TESTING CLASSIFICATION . PART VIi . “ TEST METHODS AND EQUIPMENT 7.1 SCOPE 7.2 MEASUREMENT REFERENCE BASE 7.3 UNITS OF
10、 MEASURE . 7.4 BASE CONDITIONS . 7.5 METER TESTING SYSTEMS . 7.6 CALIBRATION OF METER TESTING SYSTEMS . APPENDIX A DIFFERENTIAL TESTIhG APPENDIX B METER ACCURACY BAR CODE FOR METERS AND AUXILIARY DEVICES . . . APPENDIX D . . PROVER BELL CALIBRATION BY PHYSICAL MEASUREMENT APPENDIX C 21 22 24 25 26 2
11、7 28 28 30 30 30 30 30 30 31 34 36 36 37 37 38 38 39 39 ii STDnAGA BLOS.3-ENGL ZOO0 900883b 0001411 366 m DISCLAIMERS AND COPYRIGHT Nothing contained in this ANSI standard is to be construed as granting any right, by implication or otherwise, for the manufacture, sale or use in conneciion with any m
12、ethod, apparatus or product covered by letters patent, or as insuring anyone against liability for infringement of letters parent. This standard may be used by anyone desiring to do so. Efforis have been made to ensure the accuracy and reliability ofthe data conrained in this publication; however, A
13、NSI and AGA make no representation, warranty or guarantee in connection with this standard and hereby expressly disclaim any liability or responsibility for loss or damage resultingfrom its use; for any violation of any federal, state or municipal regulation with which this standard may conflict; or
14、 for the infringement of any patent ji-om the use of this siandord. Nothing contained in this standard should be viewed as an endorsement by ANSI/AGA of any particular manufacturers products. Permission is granted to republish material herein in laws or ordinances, and in regulations, administrative
15、 orders, or similar documents issued by public authorities. Those desiring permission for other publicarion should consult the Operating and Engineering Section, American Gas Association, 400 North Capitol Street, NW, 4h Floor, Washington, DC 20001, U.S.A. Copyrighi 92000 American Gas Association, A
16、ll Rights Reserved . 111 STD*AGA B103.3-ENGL 2000 900883b 0001412 iT2 PREFACE This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance for rotary-type gas displacement meters. It is recognized that during any transition period
17、to the metric system, sizes and dimensions need to be expressed in either the metric system or the inch-pound system or in both. In this document, both systems are used, with the inch-pound uNts given preference. In most cases, a soft conversion from existing inch-pound values is shown. Soft convers
18、ion implies a change in nomenclature only; in this document, the alternative nomenclatures (metric and inch-pound) are shown by using parentheses and can be used interchangeably. Hard conversion is used to express metric values in (closely equivalent) round inch-pound units. Bracketed values are not
19、 to be used interchangeably with the corresponding metric values. Nothing in this standard is to be considered as in any way indicating a measure of quality beyond compliance with the provisions it contains. It is designed to allow the construction and performance of displacement meters that may exc
20、eed the various provisions specified in any respect. In its preparation, recognition was intended to be given to the possibility of improvement through ingenuity of design. As progress takes place, revisions may become necessary. When they are believed desirable, recommendations should be forwarded
21、to the Chairman of ANSI B109 Committee, Operating and Engineering Section, American Gas Association, 400 North Capitol Street, NW, 41h Floor, Washington, DC 2OOO1. U.S.A. Users of this document should consult applicable federal, state and local regulations. The American Gas Association (AGA) does no
22、t, by the publication of this document, intend to present specifications that are not in compliance with applicable rules, and this document may not be construed as doing so. NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Stan
23、dards Institute, Inc. (ANSI) require that action be taken to reaffirm, revise or withdraw this standard no later than five years from the date of publication. When any revisions are deemed advisable, recommendations should be forwarded to the American Gas Association. A form is included for that pur
24、pose at the end of this standard. Purchasers of American National Standards may receive current information on all standards by writing to the American National Standards Institute, Inc 11 West 42nd Street, New York, NY 10036, U.S.A.; by calling (212) 642-4900; by faxing ANSI at (212) 398-0023; or b
25、y visiting ANSIs World Wide Web site at http:/www.ansi.org. To purchase additional copies of this standard, contact: AGA Distribution Center, P.O. Box 79230, Baltimore, MD 21279-0230; Fax: (301) 2069789; Phone: (301) 617-7819 or go to AGAS web page at www.aga.org/catalog. iv HISTORY OF THE DEVELOPME
26、NT OF THIS STANDARD Following approval of the Standard for Gas Displacemeni Meters (Under 500 Cubic Feet per Hour Capacity), ANSI B109.1, in 1973, a subcommittee was appointed to develop a standard covering rotary-type gas displacement meters. Five drafts of the standard were prepared and reviewed b
27、y the subcommittee before a final draft was prepared and submitted to American National Standards Committee B109 for its consideration on June 20, 1979. Subsequent to adoption by the committee, the first edition of the standard for rotary-type gas displacement meters was approved as American Nationa
28、l Standard by the American National Standards Institute, Inc., on April 14, 1980. The second edition was approved as American National Standard by the American National Standards Institute, Inc., on January 9, 1987. Major changes included the additions of: Part VI on Auxiliary Devices for Gas Meters
29、; Part VI1 on Test Methods and Equipment; and informative Appendices for bar coding of meters and auxiliary devices, and prover calibration. In the third edition, minor editorial changes were made. The third edition was approved on November 12.1992. This is the fourth edition of standard B109.3, in
30、which several addidons/deletions have been made to avoid any ambiguity, to make it more consistent and to improve upon some requirements. Substantive changes have been shown by a bar I I in the margin. STDaAGA BLD9-3-ENGL 2000 900883b OOOLYLY O75 I ACCREDITED STANDARDS COMMITTEE B109 GREGORY S. VERA
31、A, Chairman DAVID E KEE, Vice Chairman Ali M. Quraishi, Administrative Secretary (Non-Voting) REPRESENTING AMERICAN GAS ASSOCIATION (AGA): Cathy Chang Winston Meyer Gregory S. Vem REPRESENTING AMERICAN PUBLIC GAS ASSOCIATION (APGA): Essa Rhebi REPRESENTING AMERICAN SOCIETY OF MECHANICAL ENGINEERS (A
32、SME): James C. Devore REPRESENTING FEDERAL ENERGY REGULATORY COMMISSION (FERC): Chris M. Zerby REPRESENTING GAS APPLIANCE MANUFACTLJRERS ASSOCIATION (GAMA): David F. Kee REPRESENTING GAS METER MANUFACTURERS Donald A. Jones Paul Adams Richard A. Sallee Dane L. Ehnch Jerry Kamaiieh Vacant REPRESENTING
33、 NATIONAL ASSOCIATION OF REGULATORY UTILITY COMMISSIONERS (NARUC): Donald J. Stumm John P. Zekoll REPRESENTING NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY 0: George Mattingiy REPRESENTING NATIONAL PROPANE GAS ASSOCIATION (NPGA): Bruce Swieciki INDIVIDUAL MEMBER: Thomas J. Coam STD-AGA B109*3-ENGL
34、 2000 900BB3b 0001415 TOI SCOPE This standard applies to rotary-type positive displacement meters designed for revenue measurement of fuel gas. Part 1 comprises a list of definitions and terms used throughout the standard. Part II covers the construction requirements for qualifying new-type rotary m
35、eters. Part III covers the performance requirements for qualifying new meters and new-type rotary meters. Part IV covers “in-service performance requirements for rotary-type meters. Part V addresses installation requirements for these meters. Part VI pertains to auxiliary devices used with meters co
36、vered by this standard. Part VI1 covers test methods and equipment. 1 PART I DEFINITIONS 1.1 ACCURACY, METER. The degree to which a meter correctly measures the volume of gas passing through it, determined by comparing the volume registered by the meter with that registered by the prover. (See Appen
37、dix B for methods of expressing meter accuracy.) 1.2 ADAPTOR PLATE, INSTRUMENT. A specially designed plate mounted between a meter and an instrument to provide for a proper drive to the instrument. 1.3 AUTOMATIC INTEGRATORS 1.3.1 Recording Type. This type of automatic integrator is equipped with cor
38、rected and uncorrected volume counters and a chart to record the time, pressure or temperature, or combinations thereof: 1.3.2 Non-Recording Type. This type of automatic integrator is equipped with corrected and uncorrected volume counters. 1.3.3 Automatic Integrating Device for Pressure. An automat
39、ic integrating.device for pressure is an auxiliary device designed to automatically correct a volume-related input to some predetermined base pressure condition. 1.3.4 Automatic Integrating Device for Temperature. Automatic integrating device for temperature is an auxiliary device designed to automa
40、tically correct a volume related input to some predetermined base temperature condition in accordance with Charles Law. 1.3.5 Automatic Integrating Devices for Pressure and Temperature. An automatic integrator device for pressure and temperature is an auxiliary device designed to automatically corre
41、ct a volume-related input to some predetermined base pressure and base temperature condition in accordance with Boyles Law and Charles Law. 1.4 AUXILIARY DEVICES. Devices used with a meter to provide an adjustment of the meter reading, to permit obtaining special information, or to transmit informat
42、ion to a remote location. 1.5 BADGE. A permanent plate, affixed in a conspicuous place on a meter, containing basic meter information. 1.6 BASE CONDITIONS. The standard base conditions of pressure and temperature for the volumetric measurement of natural gas, ANSVAPI 2562-1969, has established 60F (
43、156C) and 14.73 psi (101.56 kPa) as the base temperature and pressure to which ail volumes are commonly referred. 1.7 B31TLE, CUBIC FOOT. A specially constructed and calibrated bottle, usually immersion type, complete with an immersion tank containing a light oil of low vapor pressure, with the boul
44、e suspended over the tank by means of a suitable cord and pulley so that the bottle may be immersed in the oil between two graduations, top and bottom. The bottle is constructed so that exactly 1 cubic foot of air is displaced when the bottle is immersed between the two marks. Ine calibration of the
45、 bottle must be traceable to the National Bureau of Standards. 1.8 CAPACITY, RATED. The maximum flow rate at which a rotary meter may be operated. See 3.2. 1.9 CIRCULAR CHARTS. A circular chart is a piece of paper, or other suitable material, with graduated lines upon which a pen or stylus draws a r
46、ecord indicating the variables being measured. 1.10 CIRCLE(S), READING. Graduated index circles with hands that register the accumulated volume of gas passed through the meter. 1.11 CIRCLE(S), TEST. A graduated circle provided with a rotating pointer (proving hand) on the meter index, used for testi
47、ng the meter and for indicating gas flow. Also refed to as index test dial or proving circle. 1.1 2 CON“IONS, MEER. nie integrai parts of the meter designed for attachment to meter swivels, pipe or other piping components. 2 i .13 CONSTANT-PRESSURE-COMPENSATING INDEX. An index used in conjunction wi
48、th a gas meter operated at a constant pressure, other than the contract base pressure, to indicate gas volume COKected to a contract base pressure. 1.14 CUBIC FOOT. METERED. The quantity of gas that occupies 1 cubic foot when under pressure and temperature conditions existing in the meter. 1.15 CUBI
49、C FOOT. STANDARD. (See ANSI 2132.) That quantity of gas that under an absolute pressure of 14.73 psi (101.56 Pa) and at a temperature of 60F (156C) occupies a volume of 1 cubic foot. 1.16 CUBIC METER, STANDARD. That quantity of gas that under an absolute pressure of 101.56 kPa (14.73 Ibflin) and a temperature of 288.7“K (519.7“R) occupies a volume of 1 cubic meter. 1.17 FLOW RATE, PILOT. A minimum flow rate that a meter is required to register with a prescribed accuracy. 1.18 HUBS, METER. Same as 1.12, CONNECTIONS, METER. 1.19 INDEX, CONSTANT PRESSURE COMPENSATING. Same a
