VacTran 3 Manual, страница 4

41319 Leak................................................................................................................................... 41320 Mean...................................................................................................................................free path41421 Operating...................................................................................................................................range41422 Orifice...................................................................................................................................

41423 Out gas...................................................................................................................................material41524 Parallel...................................................................................................................................conductance model41525 Permeation...................................................................................................................................

41526 Pump...................................................................................................................................speed41727 Pump...................................................................................................................................station41728 Pump...................................................................................................................................station model41729 Pump...................................................................................................................................station settings41730 Pump...................................................................................................................................throughput41731 Rate...................................................................................................................................of rise41732 Raw...................................................................................................................................data conductance model41733 Screen...................................................................................................................................capture41834 Selected...................................................................................................................................gas41835 Selected...................................................................................................................................Range41936 Series...................................................................................................................................conductance model41937 Start...................................................................................................................................pressure42038 System...................................................................................................................................model42039 Target...................................................................................................................................pressure42040 Vacuum...................................................................................................................................environment42141 Vessel...................................................................................................................................volume42242 Vacuum...................................................................................................................................pump422Part XXI Frequently asked questions423Part XXII References427Index428© 2011 Professional Engineering Computations1112VacTran 31ContentsContents24 years of serviceVacuum TechnologySoftwareCopyright © 1987-2011IntroductionInstallation and startupFor new vacuum technologistsPump modelsConductance StudiesIntroduction to system modelsSystem modelsUsing system modelsRaw data gas load modelsOut gas librariesPermeation librariesO-Ring LibrariesPipe librariesGas ModelsDefault SettingsCalculation FormulasFrequently asked questionsGlossaryReferencessee also:Impatient?You don't read manuals?Copyright noticeTrademark informationReporting bugsVacTran® License AgreementUpgrading VacTran© 2011 Professional Engineering ComputationsContents1.113Impatient?See your first graph in two mouse clicks!Install VacTran from the CD; plug in your hardware key in to a USB port, and run VacTran from the Start menuclick 1) On the Study menu, select Simple System…click 2) Click on the button Solve calculated valueYou will see a pump down graph based on the values in the simple system model...© 2011 Professional Engineering Computations14VacTran 3...and have just created your first graph.Would you like to play with the graph?1) Click on each button at the top of the Main Graph Window (shown above) to change the appearance of the graph.2) Click on Export to copy the image of the graph to the Windows clipboard, printer, or a graphics file.3) Click on Controls… to access a larger set of graphing options, including color, fonts, and custom titles.© 2011 Professional Engineering ComputationsContents15Want to see more?1) Change any variable, and then click on Solve calculated value to generate a new pump down curve.2) Click on the tab marked Pipe Length.3) Change any variable, and then click on Solve calculated value to generate a new pump down curve.

This time,the pipe length will be calculated based on the other variables.© 2011 Professional Engineering Computations161.2VacTran 3You don't read manuals?Chances are you bought VacTran because you have serious work to do and aggressive deadlines to meet. Youdon’t have a lot of free time to casually read manuals, and want results now. A nice looking vacuum analysispresented at tomorrow’s design review might be impressive, but be careful. VacTran can generate terrific results orgarbage depending on the input, so be mindful of your assumptions and the limitations of the equations used in theprogram. Try the following few steps to get started, but read the manual to really understand what is going on.Have fun!1) Start VacTran. From the menu, select File, then Open…, then System Model.

Go the directory where youinstalled VacTran and open “using.VTSYS” from the Examples folder. You should see this:2) Click on the vacuum vessel to change the vessel volume, gas, and pump down settings.3) Double-click on the pipe, one of the pumps, or one of the gas loads to edit its properties4) Add pipes, pumps or gas loads by clicking in the respective box and then clicking on thespeed button.5) Generate a graph of your choice using the Graphs menu.See also: Simple System Studies© 2011 Professional Engineering ComputationsContents1.317Copyright noticeVacuum Technology Softwareall rights reservedCopyright © 1987-2011No part of this Program Reference may be reproduced, transmitted, transcribed, or translated by any means withoutprior written consent of2256 Rhone Drive, Livermore CA 94550phone 925-449-0941 fax 925-449-4517support@vactran.comwww.vactran.com1.4Trademark information"VacTran", and the VacTran logo are registered trademarks of Professional Engineering Computations.The phrase "Vacuum Technology Software" is a trademark of Professional Engineering Computations.Microsoft, MS DOS, Excel, Powerpoint and Windows are registered trademarks of Microsoft Corporation.Names of other brand and product names mentioned herein may be trademark s or registered trademark s of theirrespective holders.

All rights reserved.© 2011 Professional Engineering Computations181.5VacTran 3Reporting bugsAs thorough as we have tried to be in testing at both PEC and many Beta sites, a bug may have slipped throughthe QA process. If part of the program is not behaving as you might expect, please contact PEC. There may be afree update available already that is available on our web site.The best way to contact us is by fax at 925-449-4517, or Email support@vactran.com.

Please include the followinginformation:1) The version number of VacTran (you can find this under the Help menu)2) What part of the program (system model, pump model, etc.).3) What type of operation (calculation, data entry, menu display, graphing, disk input/output).4) Logic, calculation, or display error.5) A description of the model being analyzed.6) It helps a lot if you send the system model and pump files so we can duplicate your results.

A screen image willalso help. To generate a screen image, click on the camera button on the tool bar as shown below. You caninclude this screen image into an email to us.For up to date information on upgrades, check www.vactran.com© 2011 Professional Engineering ComputationsContents1.619VacTran® License AgreementCAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS.OPENING THEPACKET INDICATES YOU ARE AGREEING TO BE BOUND BY THE TERMS OFAGREEMENT.

IF YOU DON’T AGREE WITH THE TERMS OF THIS AGREEMENT,SHOULD PROMPTLY RETURN THE UNOPENED COMPACT DISK (CD) PACKAGEMANUAL UNUSED.DISKTHISYOUANDThis is a legal agreement between you (either an individual or an entity) and Professional Engineering Computations.("PEC"). Use of this software constitutes acceptance of the terms of this agreement. If you do not agree to the terms of thisagreement, contact PEC for other licensing options or promptly return the software and the accompanying items (includingwritten materials and binders or other containers) to PEC or its authorized distributor from which you received the softwarefor a full refund.1.