AWWA-M2-2001.pdf
《AWWA-M2-2001.pdf》由会员分享,可在线阅读,更多相关《AWWA-M2-2001.pdf(236页珍藏版)》请在三一文库上搜索。
1、American Water Works Association 6666 W. Quincy Ave., Denver, CO 80235 (303) 794-771 1 . y!: : 4 e _ Erratum to M2 Instrumentation and Control (March ZOCZ) Corrections to figures: .- . . : : 1 . .- - Motorized Conveyor Belt 7 . *.;. . -. . .- - . - . . . . . On page 151, Figure 8-9 should be as foll
2、ows: 100 1 t I Linear - / Valve position as percent of open On page 158, Figure 8-16 should be as follows: Copyright American Water Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 07:47:25 MDTNo reproduction or
3、 networking permitted without license from IHS -,-,- On page 158, Figure 8-17 should be as follows: 0 Tank z - - - - - - - a z - - - A Transfer Pumo To Adjust = - - - Dosage TO Process Positive Displacement Chemical Metering Pump On page 159, Figure 8-18 should be as follows: Storage BaA Copyright A
4、merican Water Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 07:47:25 MDTNo reproduction or networking permitted without license from IHS -,-,- 11 t Copyright American Water Works Association Provided by IHS u
5、nder license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 07:47:25 MDTNo reproduction or networking permitted without license from IHS -,-,- Instrumentation and Control AWWA MANUAL M2 Third Edition American Water Works Association Copyright American Water
6、 Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 07:47:25 MDTNo reproduction or networking permitted without license from IHS -,-,- MANUAL OF WATER SUPPLY PRACTICES-M2, Third Edition Instrumentation and Control
7、 Copyright O 2001 American Water Works Association All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information or retrieval system, except in the form of hriaf excerpts or
8、quotations for review purposes, without the written permission of the publisher. Library of Congress Cataloging-in-Publication Data Instrumentation and control.- 3rd ed. p. cm. - (AWWA manual ; M2) New ed. of: Automation and instrumentation. 1983. Includes bibliographical references and index. ISBN
9、1-58321-125-X 1. Waterworks-Automation. I. American Water Works Association. II. Automation and instrumentation. III. Series. TD491 .A49 no. M2 2001 TD487 628.11 628.1 s-dc21 2001055311 Printed in the United States of America American Water Works Association 6666 West Quincy Avenue Denver, CO 80235
10、ISBN 1-5832 1 - 125-X Printed on recycled paper Copyright American Water Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 07:47:25 MDTNo reproduction or networking permitted without license from IHS -,-,- Conten
11、ts List of Figures, v List of Tables, xi Foreword, xiii Acknowledgments, xv Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 The Water Utility System, 1 How to Use This Manual, 3 Reference, 4 Chapter 2 Hydraulics and Electricity . . . . . . . . . . . . . . . .
12、 . . . . . . . 5 Hydraulics, 5 Electricity, 18 References, 39 Chapter 3 Motor Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Introduction, 41 Motors, 41 Variable Speed Motor Control, 49 Variable Speed Motor Control Systems, 50 Motor Control Logic, 52 Chapter 4 Flowmeters . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Meter Categories, 67 Meter Coefficient of Discharge, 68 Venturi Flowmeters, 69 Modified Venturis, 74 Orifice Plate Flowmeters, 74 Magnetic Flowmeters, 76 Turbine and Propeller Flowmeters, 80 Sonic Flowmeters, 84 Vortex Flowmeters, 86
14、Averaging Pitot Flowmeters, 89 Variable Area Flowmeters, 92 Open Channel Flow, 94 General Installation Precautions, 98 Signal Output and Transport, 99 References, 100 Chapter 5 Pressure, Level, Temperature, and Other Process Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15、. . . . 101 Pressure, Level, and Temperature, 102 Electric Power and Equipment Status, 110 Process Analyzers, 112 General Considerations, 119 References, 119 . 111 Copyright American Water Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie
16、Not for Resale, 03/21/2007 07:47:25 MDTNo reproduction or networking permitted without license from IHS -,-,- Chapter 6 Secondary Instrumentation . . . . . . . . . . . . . . . . . . . . . 121 Introduction, 121 Signal Standardization, 121 Signal Power and Transmission, 122 Transmitters, 124 . . Contr
17、ollers, 124 Recording and Indicating Hardware, 126 Function Modules, 128 Converters, 129 Chapter 7 Telemetry . . . . . . . . . . . . . . . . . . . . . Analog Telemetry, 133 Tone Multiplexing, 137 Amplitude Modulation Tone, 137 Frequency Shift Keying Tone, 138 Communication Media and Channels, 138 Re
18、ference, 142 131 Chapter 8 Final Control Elements . . . . . . . . . . . . . . . . . . . . . . . . 143 Valves, 144 Valve Summary, 153 Pumping Systems, 154 Miscellaneous Final Control Elements, 157 Chapter 9 Basics of Automatic Process Control . . . . Feedforward Control, 162 Feedback Control, 163 Fee
19、dforward vs. Feedback Control, 164 Manual vs. Automatic Control, 165 Automatic Feedforward Control Methods, 166 Automatic Feedback Control Methods, 168 References, 178 . . . . . . . 161 Chapter 10 DigitalControl and Communication Systems . . . . . . . . . 179 Digital Control Systems, 180 Communicati
20、on Systems, 188 Applications and Site Planning, 194 Technology Trends, 196 References, 197 . . . . . . . 199 Chapter 11 Instrument Diagrams . . . . . . . . Glossary, 207 Index, 215 List of AWWA Manuals, 225 iv Copyright American Water Works Association Provided by IHS under license with AWWA License
21、e=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 07:47:25 MDTNo reproduction or networking permitted without license from IHS -,-,- Figures 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 2-18 2-19a 2-19b 2-20 2-2 1 3- 1 3-2 3-3 3-4 3-5 3-6 3-7 3-8
22、 3-9 3-10 Pressure in a tank, 7 Pressure in containers of various shapes, 7 Water level in an unpressurized system, 8 Fluid levels in a vacuum system, 8 Flow velocity as a function of cross-sectional area, 9 Flow-velocity profiles, 9 Determination of static pressure, 9 Water in pipe with pressure, n
23、o flow, 10 Total head, 11 Elevation head, 11 Flowing without friction, 12 Velocity head, 12 Flowing with friction, 13 Flowing with friction, 15 Mechanical leverage compared to .,ydraulic I,rce, 16 Hydraulic force, 17 Differential areas, 17 Transformer symbol, 24 Delivery voltage at 480 VAC using ele
24、ctric utilitys transformer, 25 Delivery voltage at 21,000 VAC using water utilitys transformer, 25 Main substation with switchgear, 26 Complete one-line with load center and motors, 28 Induction motor rotors, 43 Motor starter contactor coil, 53 Motor starter circuit with one switch, 53 Motor starter
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- AWWA M2 2001
链接地址:https://www.31doc.com/p-3732470.html