Measurement and control basics
Thomas A. Hughes
• • • • •
Process Control and Process Control Loops Fundamentals Temperature and Pressure Measurement Level Measurement and Control Analytical and Flow Measurement
Taken from Measurement and Control Basics, Third Edition
Notice The information presented in this publication is for the general education of the reader. Because neither the authors nor the publisher have any control over the use of the information by the reader, both the authors and the publisher disclaim any and all liability of any kind arising out of such use. The reader is expected to exercise sound professional judgment in using any of the information presented in a particular application. Additionally, neither the authors nor the publisher have investigated or considered the effect of any patents on the ability of the reader to use any of the information in a particular application. The reader is responsible for reviewing any possible patents that may affect any particular use of the information presented. Any references to commercial products in the work are cited as examples only. Neither the authors nor the publisher endorse any referenced commercial product. Any trademarks or tradenames referenced belong to the respective owner of the mark or name. Neither the authors nor the publisher make any representation regarding the availability of any referenced commercial product at any time. The manufacturer’s instructions on use of any commercial product must be followed at all times, even if in conflict with the information in this publication.
Copyright © 2002 ISA – The Instrumentation, Systems, and Automation Society All rights reserved. Printed in the United States of America. 10 9 8 7 6 5 4 3 2 ISBN 1-55617-764-X No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written