1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 21360-2:2012Vacuum technology Standard methods formeasuring vacuum-pumpperformancePart 2: Positive displacement vacuumpumpsBS ISO 21360-2:2012 BRITISH STANDARDNational for
2、ewordThis British Standard is the UK implementation of ISO 21360-2:2012.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/8/-/4, Vacuum technology.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not
3、purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 61681 5ICS 23.160Compliance with a British Standard cannot confer immunity fromlegal obligation
4、s.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2012.Amendments issued since publicationDate Text affectedBS ISO 21360-2:2012 ISO 2012Vacuum technology Standard methods for measuring vacuum-pump performance Part 2: Positive displaceme
5、nt vacuum pumpsTechnique du vide Mthodes normalises pour mesurer les performances des pompes vide Partie 2: Pompes vide volumtriquesINTERNATIONAL STANDARDISO21360-2First edition2012-04-15Reference numberISO 21360-2:2012(E)BS ISO 21360-2:2012ISO 21360-2:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT
6、 PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or IS
7、Os member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 21360-2:2012ISO 21360-2:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv
8、Introduction v1 Scope 12 Normative references . 13 Terms and definitions . 14 Symbols and abbreviated terms . 25 Test methods 35.1 Measurement of the volume flow rate . 35.2 Measurement of the base pressure 45.3 Measurement of water vapour tolerance 45.4 Determination of the power consumption 45.5 L
9、owest start-up temperature 55.6 Measuring uncertainties 5Annex A (informative) Measurement of the water vapour tolerance 6Annex B (informative) Calculation of the water vapour tolerance 13Annex C (informative) Table of the saturation vapour pressure of water .14Bibliography .16BS ISO 21360-2:2012ISO
10、 21360-2:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subjec
11、t for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC)
12、 on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees
13、are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held
14、responsible for identifying any or all such patent rights.ISO 21360-2 was prepared by Technical Committee ISO/TC 112, Vacuum technology.This first edition of ISO 21360-2 cancels and replaces ISO 1607-1:1993 and ISO 1607-2:1989, which have been technically revised.ISO 21360 consists of the following
15、parts, under the general title Vacuum technology Standard methods for measuring vacuum-pump performance: Part 1: General description Part 2: Positive displacement vacuum pumpsiv ISO 2012 All rights reservedBS ISO 21360-2:2012ISO 21360-2:2012(E)IntroductionThis part of ISO 21360 specifies methods for
16、 measuring the performance data of positive-displacement vacuum pumps. This part of ISO 21360 complements ISO 21360-1, which provides a general description of the measurement of performance data of vacuum pumps.The methods described here are well known from existing national and International Standa
17、rds. The aim in drafting this part of ISO 21360 was to collect together suitable methods for the measurement of performance data of positive-displacement vacuum pumps. This part of ISO 21360 takes precedence in the event of a conflict with ISO 21360-1. ISO 2012 All rights reserved vBS ISO 21360-2:20
18、12BS ISO 21360-2:2012Vacuum technology Standard methods for measuring vacuum-pump performance Part 2: Positive displacement vacuum pumps1 ScopeThis part of ISO 21360 specifies methods for measuring the volume flow rate, base pressure, water vapour tolerance, power consumption, and the lowest start-u
19、p temperature of positive displacement vacuum pumps, which discharge gas against atmospheric pressure and with a usual base pressure , whereas Equation (B.6) does not. Both factors should be considered, because no further measuring values are necessary. ISO 2012 All rights reserved 13BS ISO 21360-2:
20、2012ISO 21360-2:2012(E)Annex C (informative) Table of the saturation vapour pressure of waterTable C.1 Table of the saturation vapour pressure of waterT0KpT0PaT0KpT0Pa273 603,6 313 7 314,5274 649,1 314 7 714,0275 697,5 315 8 132,1276 749,1 316 8 569,7277 804,0 317 9 027,4278 862,4 318 9 506,0279 924
21、,6 319 10 006,3280 990,7 320 10 529,0281 1 060,9 321 11 075,1282 1 135,4 322 11 645,3283 1 214,6 323 12 240,6284 1 298,5 324 12 861,8285 1 387,5 325 13 509,7286 1 481,8 326 14 185,5287 1 581,7 327 14 889,9288 1 687,5 328 15 624,1289 1 799,4 329 16 389,0290 1 917,7 330 17 185,6291 2 042,9 331 18 015,
22、0292 2 175,1 332 18 878,4293 2 314,8 333 19 776,8294 2 462,2 334 20 711,4295 2 617,8 335 21 683,3296 2 782,0 336 22 693,6297 2 955,0 337 23 743,8298 3 137,4 338 24 834,9299 3 329,5 339 25 968,2300 3 531,8 340 27 145,1301 3 744,7 341 28 367,0302 3 968,7 342 29 635,1303 4 204,3 343 30 950,9304 4 452,0
23、 344 32 315,7305 4 712,3 345 33 731,1306 4 985,6 346 35 198,5307 5 272,7 347 36 719,3308 5 573,9 348 38 295,214 ISO 2012 All rights reservedBS ISO 21360-2:2012ISO 21360-2:2012(E)T0KpT0PaT0KpT0Pa309 5 889,9 349 39 927,8310 6 221,4 350 41 618,6311 6 568,9 351 43 369,2312 6 933,0 352 45 181,4Table C.1
24、(continued) ISO 2012 All rights reserved 15BS ISO 21360-2:2012ISO 21360-2:2012(E)Bibliography1 Jousten, K., editor. Handbook of vacuum technology, Benjamin nakhosteen, C., translator. Weinheim: WileyVCH, 2008. 1 002 p.2 Nser, K.H. Physikalische Chemie fr Techniker und Ingenieure Physical chemistry f
25、or technologists and engineers, 3rd edition. Leipzig: VEB Deutscher Verlag fr Grundstoffindustrie, 1960. 428 p.16 ISO 2012 All rights reservedBS ISO 21360-2:2012BS ISO 21360-2:2012ISO 21360-2:2012(E) ISO 2012 All rights reservedICS 23.160Price based on 16 pagesThis page deliberately left blankBSI is
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