VacTran 3 Manual

Vacuum Technology SoftwareWindows version 3© 2011 Professional Engineering ComputationsNo part of this Program Reference may be reproduced, transmitted, transcribed, or translatedby any means w ithout prior w ritten consent of2256 Rhone Drive, Livermore, CA 94550phone: 925-449-0941 fax: 925-449-4517support@vactran.comw w w .vactran.comVacTran 3Help version 3.28.1© 2011 Professional Engineering ComputationsAll rights reserved.

No parts of this work may be reproduced in any form or by any means - graphic, electronic, ormechanical, including photocopying, recording, taping, or information storage and retrieval systems - without thewritten permission of the publisher.Products that are referred to in this document may be either trademarks and/or registered trademarks of therespective owners. The publisher and the author make no claim to these trademarks.While every precaution has been taken in the preparation of this document, the publisher and the author assume noresponsibility for errors or omissions, or for damages resulting from the use of information contained in thisdocument or from the use of programs and source code that may accompany it.

In no event shall the publisher andthe author be liable for any loss of profit or any other commercial damage caused or alleged to have been causeddirectly or indirectly by this document.Cover art: Cat’s Eye Nebula (NGC 6543) 2004Credit: NASA, the Hubble Heritage Team (AURA/STScI)Printed: April 2011 in Livermore California4VacTran 3Table of ContentsPart I Contents121 Impatient?................................................................................................................................... 132 You don't...................................................................................................................................read manuals?163 Copyright...................................................................................................................................notice174 Trademark...................................................................................................................................information175 Reporting...................................................................................................................................bugs186 VacTran®...................................................................................................................................License Agreement19..........................................................................................................................................................Upgrading VacTran20Part II Installation211 CD contents...................................................................................................................................

212 Installing...................................................................................................................................VacTran on your system213 Uninstalling...................................................................................................................................VacTran214 USB Hardware...................................................................................................................................Key physical installation225 If the ...................................................................................................................................key doesn't work22Part III Introduction241 What ...................................................................................................................................does VacTran do?242 How is...................................................................................................................................VacTran organized?263 For starters,...................................................................................................................................what’s important to remember?264 When...................................................................................................................................are the different types of models used?275 Where...................................................................................................................................are the models’ dependencies?296 Some...................................................................................................................................models can generate others307 New features...................................................................................................................................in version 331Part IV First look321 The VacTran...................................................................................................................................startup screen332 VacTran...................................................................................................................................Help System353 The tool...................................................................................................................................bar364 Main ...................................................................................................................................menu375 Special...................................................................................................................................tools46Part V For new vacuum technologists551 The American...................................................................................................................................Vacuum Society552 The universe...................................................................................................................................of vacuum553 Basic...................................................................................................................................goals of vacuum systems56© 2011 Professional Engineering ComputationsContents54 Basic...................................................................................................................................steps vacuum system design615 Selecting...................................................................................................................................design margins626 Traditional...................................................................................................................................calculation methods627 How VacTran...................................................................................................................................helps62Part VI Pump models631 Modeling...................................................................................................................................a pump in VacTran642 Creating...................................................................................................................................pump models653 Pump...................................................................................................................................dialog description664 Pump...................................................................................................................................dialog commands675 Menu...................................................................................................................................commands for pump models686 Right-click...................................................................................................................................options697 Opening...................................................................................................................................existing pump models708 Creating...................................................................................................................................pump models with the pump digitizer719 Additional...................................................................................................................................data in the tabbed pages7410 Example...................................................................................................................................1 Mechanical pump7511 Example...................................................................................................................................2 Roots pump7712 Example...................................................................................................................................3 Combining two or more pumps7913 Importing...................................................................................................................................DOS pump files8014 Importing...................................................................................................................................VacTran 2 pump files8015 Importing...................................................................................................................................pumps from Excel8116 Exporting...................................................................................................................................pumps to Excel8417 Exporting...................................................................................................................................pumps to Excel via text export8718 Tips on...................................................................................................................................modeling pumps90Part VII Introduction to system models911 System...................................................................................................................................model components922 Simple...................................................................................................................................System study94Part VIII System models961 System...................................................................................................................................models and pump data972 Creating...................................................................................................................................system models973 System...................................................................................................................................model dialog commands994 Output...................................................................................................................................from system models1005 System...................................................................................................................................model graphing options101..........................................................................................................................................................System: Pump down time..........................................................................................................................................................System: Pump down time, no losses..........................................................................................................................................................System: Gas throughput vs.