Download or read book Total and Partial Pressure Measurement in Vacuum Systems written by John Henry Leck and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the underlying theory and practical aspects of pressure gauges that are at present in general use. Because of the ever-increasing demands to provide a wider range of sophisticated and reliable vacuum equipment a good understanding of these instruments is of vital importance to all workers in the research and industrial sectors. Of the gauges considered only the mechanical types are absolute, in the sense that they measure pressure directly as a force upon a liquid column or a solid surface. Under ideal conditions it is possible to calculate their sensitiv ities, which are the same for all gases and vapours. The recent developments in the viscous or molecular damping gauges indicate that these may also be considered absolute. Other gauges are indirect in that they involve the measurement of some secondary phenomenon which is pressure-dependent and therefore these gauges can only be used for measurement after calibration against an absolute standard. The radiometer or Knudsen type gauge has been excluded from the text since these are now only of historic interest. Also no mention is made of the integration techniques involving surface changes (such as work function) although these could have application under very special circumstances. The McLeod gauge is dealt with in some detail, for even though this gauge has few practical applications, it is the most sensitive absolute gauge available and has value as a reference standard.
Download or read book Total Pressure Measurements in Vacuum Technology written by A. Berman and published by Academic Press. This book was released on 2014-06-28 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Total Pressure Measurements in Vacuum Technology focuses on the measurement of low total pressure in hostile environments or in the presence of magnetic fields. This book emphasizes the general processes and problems involved in measurement techniques and physical principles on which vacuum gauges operate, rather than on the detailed description of the gauges. The design and techniques involved in the use of special instruments that determine "pressure or gas density, such as pressure converters or radioactive gauges, are also described. This publication is mainly intended for graduate students and research scientists who have a good general background in physics and engineering.
Download or read book Manometric Methods written by Dixon and published by CUP Archive. This book was released on 1951-01-02 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultrahigh Vacuum Practice written by G. F. Weston and published by Elsevier. This book was released on 2013-10-22 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrahigh Vacuum Practice covers topics about components suitable for ultrahigh vacuum applications, their theory of operation, their assembly and use, and their performance and calibration. The book starts by discussing the fundamentals of vacuum science and technology. The text then describes the physical properties and methods of preparing the materials for ultrahigh vacuum and the various pumps and their performance and application to ultrahigh vacuum systems. The mechanism and performance of the various ultrahigh vacuum gauges and the problem of gauge calibration at low pressures, as well as the accuracy that can be expected are discussed as well. Partial pressure measurements, ultrahigh vacuum components, and liquid nitrogen replenisher are also considered. The book tackles the system requirements and applications, as well as methods for detecting leak. Users or potential users of ultrahigh vacuum equipment and expert vacuum engineers will find the book useful.
Download or read book A User s Guide to Vacuum Technology written by John F. O'Hanlon and published by John Wiley & Sons. This book was released on 2005-02-18 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the decade and a half since the publication of the Second Edition of A User?s Guide to Vacuum Technology there have been many important advances in the field, including spinning rotor gauges, dry mechanical pumps, magnetically levitated turbo pumps, and ultraclean system designs. These, along with improved cleaning and assembly techniques have made contamination-free manufacturing a reality. Designed to bridge the gap in both knowledge and training between designers and end users of vacuum equipment, the Third Edition offers a practical perspective on today?s vacuum technology. With a focus on the operation, understanding, and selection of equipment for industrial processes used in semiconductor, optics, packaging, and related coating technologies, A User?s Guide to Vacuum Technology, Third Edition provides a detailed treatment of this important field. While emphasizing the fundamentals and touching on significant topics not adequately covered elsewhere, the text avoids topics not relevant to the typical user.
Download or read book Vacuum Physics and Technology written by and published by Academic Press. This book was released on 1980-01-18 with total page 619 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vacuum Physics and Technology
Download or read book Handbook of Vacuum Technology written by Karl Jousten and published by John Wiley & Sons. This book was released on 2016-06-14 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive, standard work has been updated to remain an important resource for all those needing detailed knowledge of the theory and applications of vacuum technology. The text covers the existing knowledge on all aspects of vacuum science and technology, ranging from fundamentals to components and operating systems. It features many numerical examples and illustrations to help visualize the theoretical issues, while the chapters are carefully cross-linked and coherent symbols and notations are used throughout the book. The whole is rounded off by a user-friendly appendix of conversion tables, mathematical tools, material related data, overviews of processes and techniques, equipment-related data, national and international standards, guidelines, and much more. As a result, engineers, technicians, and scientists will be able to develop and work successfully with the equipment and environment found in a vacuum.
Download or read book Pressure Measurement in Vacuum Systems Second Edition written by and published by . This book was released on 1964 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pressure Measurement in Vacuum Systems written by John Henry Leck and published by . This book was released on 1967 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pressure Measurement in Vacuum Systems written by J H (John Henry) Leck and published by Hassell Street Press. This book was released on 2021-09-09 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Introduction to Vacuum Technology written by David M. Hata and published by Prentice Hall. This book was released on 2008 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: The approach taken in this book is to approach vacuum systems from a pressure regime viewpoint. That is, after covering some basic chemistry, the first pressure regime covered is the rough vacuum regime. Within the study of rough vacuum systems, the following topics are covered: the gas load, the pumping mechanism, pressure measurement and vacuum system construction. The discussion of rough vacuum is then followed by the study of high-vacuum systems. The same topics are revisited, but this time from a high vacuum perspective. Once both rough vacuum and high vacuum systems are covered, then the topics of leak detection and residual gas analysis are introduced. This approach lends itself to laboratory experimentation. During the review of gas laws from chemistry, there are a number of experiments and demonstrations that can be performed to reinforce basic laws and concepts. Then, during the study of rough vacuum systems, pumpdown times can be calculated and pumpdowns performed in the laboratory. Likewise, during the study of high-vacuum systems, pumpdowns as well as other lab exercises, such as outgassing and residual gas analysis, can be conducted. Coverage of vacuum systems from a pressure regime viewpoint, rather than from a topical viewpoint. Focus on the fundamental science behind vacumm system components. This book is written for users of vacuum systems, especially the technicians that are responsible for maintaining them.
Download or read book Introduction to Total and Partial pressure Measurements in Vacuum Systems written by R. A. Outlaw and published by . This book was released on 1989 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vacuum Technique written by L.N. Rozanov and published by CRC Press. This book was released on 2002-04-04 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vacuum technology finds itself in many areas of industry and research. These include materials handling, packaging, gas sampling, filtration, degassing of oils and metals, thin-film coating, electron microscopy, particle acceleration, and impregnation of electrical components. It is vital to design systems that are appropriate to the application, and with so many potential solutions this can become overwhelming. Vacuum Technique provides an overview of vacuum technology, its different design methodologies, and the underlying theory. The author begins with a summary of the properties of low-pressure gases, then moves on to describe mathematical modeling of gas transfer in the vacuum system, the operation of pumps and gauges, computer-aided synthesis and analysis of systems, and the design of different vacuum systems. In particular, the author discusses the structure and characteristics of low, middle, high, and superhigh vacuum systems, as well as the characteristics of joints, materials, movement inputs, and all aspects of production technology and construction standards. Using specific examples rather than describing the various elements, Vacuum Technique supplies engineers, technicians, researchers, and students with needed expertise and a comprehensive guide to designing, selecting, and using an appropriate vacuum system for a specific purpose.
Download or read book Vacuum and Ultravacuum written by Igor Bello and published by CRC Press. This book was released on 2017-11-02 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vacuum technology has enormous impact on human life in many aspects and fields, such as metallurgy, material development and production, food and electronic industry, microelectronics, device fabrication, physics, materials science, space science, engineering, chemistry, technology of low temperature, pharmaceutical industry, and biology. All decorative coatings used in jewelries and various daily products—including shiny decorative papers, the surface finish of watches, and light fixtures—are made using vacuum technological processes. Vacuum analytical techniques and vacuum technologies are pillars of the technological processes, material synthesis, deposition, and material analyses—all of which are used in the development of novel materials, increasing the value of industrial products, controlling the technological processes, and ensuring the high product quality. Based on physical models and calculated examples, the book provides a deeper look inside the vacuum physics and technology.
Download or read book Understanding Modern Vacuum Technology written by Steve Borichevsky and published by Createspace Independent Publishing Platform. This book was released on 2017-09-02 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical information about today's vacuum technology The purpose of this book is to help scientists, engineers and technicians learn about and better understand the vacuum technology found in science and industry today. It is written so that anyone, whether new to the art or an experienced practitioner, who wishes to learn about vacuum engineering can do so quickly and easily. It provides an undercut to the many classic texts that are still available today. Armed with the information contained within, the technologist will be able to go to the more advanced materials, if needed, and absorb that knowledge quickly and efficiently. This second edition contains the absolute latest technology, some not found in any vacuum technology book to date. It has updated information about pressure measurement, pumping and residual gas analysis. You will find information about the cutting edge research being done by NIST to develop quantum based standards. Understanding Modern Vacuum Technology explains concepts and methods by presenting the historical background of the development of the technology and how it has evolved into the technology we use today. It draws on historical papers and patents to show how the technology was conceived and then brings the topic up to modern times. In this way the reader will gain full conceptual understandings so that he or she will be able to then create sound vacuum solutions for the technical challenges that they face. A partial list of topics: Gas Laws Microscopic Description of a Gas Flows and Conductance Pressure Measurement Partial Pressure and Mass Analysis Vapor Pressure Photonic Pressure Measurement Flow Characteristics in Vacuum Rough Vacuum Pumps Diffusion Pumps Turbomolecular Pumps Cryopumps Ion Pumps Getter Pumps Calibrated Leaks Leaks and their Detection In order to learn more, visit www.ModernVacuumTechnology.com.
Download or read book Troubleshooting Vacuum Systems written by Norman P. Lieberman and published by John Wiley & Sons. This book was released on 2012-12-03 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vacuum systems are in wide spread use in the petrochemical plants, petroleum refineries and power generation plants. The existing texts on this subject are theoretical in nature and only deal with how the equipment functions when in good mechanical conditions, from the viewpoint of the equipment vendor. Also, the existing texts fail to consider the interaction of the vacuum system with the process equipment it serves and the variability of the motive steam conditions, change in cooling water temperature condenser fouling and erosion of the ejectors. Here are some of the many questions answered in this groundbreaking volume: Why does my first stage jet make a surging sound during hot weather? Why does the vacuum suddenly break? I've seen moisture condensing on the jet's body! What’s causing that? Why do I have to steam-out the drain legs from our condensers? Superheated steam is making our vacuum worse. Is this normal? How can I locate and measure air leaks? Reducing the steam pressure to my jets improves vacuum. But why? I can't pull the pre-condenser bundle. The shell side is fouling. What should I do? We're not getting our normal horsepower from our steam turbine. Could this be a jet problem? Raising the seal drum level improves vacuum! Is there an explanation for this? Our turbine exhaust steam pressure to our surface condenser has doubled in the last two years. What should we do? Restricting cooling water flow from our elevated condensers improves vacuum! Is this possible? What's a converging-diverging ejector all about? What's the difference between a barometric condenser and a surface condenser? Which is better?
Download or read book System Recovery Evacuation written by Esco Institute and published by ESCO Press. This book was released on 2020-12-31 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: When installing or servicing an air conditioning or refrigeration system, two of the most important tasks performed by technicians are refrigerant recovery and system evacuation. In order to perform these tasks properly, and in a safe manner, technicians need to understand the theory behind them, having a working knowledge of the equipment and tools used, and employ accepted industry best practices. This e-book walks through each step of both tasks, while covering safety, theory, and application. Also covered are leak detection methods and filter drier use. System Recovery and Evacuation was written by HVACR instructors for HVACR instructors to provide sound, relevant information in a single source. This e-book provides students and practicing technicians with the information and knowledge necessary to understand refrigerant recovery, system evacuation, leak detection, and filter driers. It is full of color illustrations and includes worksheets that provide students and practicing technicians with the information and knowledge necessary to accurately and safely install or service air conditioning and refrigeration systems. The end of the e-book contains fill-in-the-blank questions that review the content of the entire manual.
