1、BRITISH STANDARD BS EN 61300-2-32: 1997 IEC 61300-2-32: 1995 Fibre optic interconnecting devices and passive components Basictest and measurement procedures Part2.32: Tests Water vapour permeation The European Standard EN61300-2-32:1997 has the status of a BritishStandard ICS 33.180.20BSEN61300-2-32
2、:1997 This BritishStandard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comesintoeffect on 15 November 1997 BSI 04-2000 ISBN 0 580 28581 2 National foreword This BritishStandard is the English language vers
3、ion of EN61300-2-32:1997. It is identical with IEC61300-2-32:1995. The UK participation in its preparation was entrusted by Technical Committee EPL/86, Fibre optics, to Subcommittee EPL/86/2, Interconnecting devices and passive components, which has the responsibility to: aid enquirers to understand
4、 the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this
5、subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC60027-1. For a period of time during the change over from one numbering system to the other, publications
6、may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The BritishStandards which implement thes
7、e international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary
8、provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title p
9、age, pages2 and 3 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSEN61300-2-32:1997 BSI 04-2000 i Conte
10、nts Page National foreword Inside front cover Foreword 2 Text of EN61300-2-32 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN61300-2-32 August 1997 ICS 33.180.20 English version Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part2-32: T
11、ests Water vapour permeation (IEC61300-2-32:1995) Dispositifs dinterconnexion et composants passifs fibres optiques Mthodes fondamentales dessais et de mesures Partie2-32: Essais Rsistance la vapeur deau (CEI61300-2-32:1995) Lichtwellenleiter Verbindungselemente und passive Bauteile Grundlegende Prf
12、- und Meverfahren Teil2-32: Prfungen: Wassereindringung (IEC61300-2-32:1995) This European Standard was approved by CENELEC on 1997-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a na
13、tional standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version
14、 in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, Fran
15、ce, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Cen
16、tral Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN61300-2-32:1997 EEN61300-2-32:1997 BSI 04-2000 2 Foreword The text of the International Standard IEC61300-2-32:1995, prepared
17、by SC86B, Fibre optic interconnecting devices and passive components, of IEC TC86, Fibre optics, was submitted to the formal vote and was approved by CENELEC as EN61300-2-32 on 1997-07-01 without any modification. The following dates were fixed: Endorsement notice The text of the International Stand
18、ard IEC61300-2-32:1995 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword 2 1 General 3 1.1 Scope and object 3 1.2 General description 3 2 Apparatus 3 2.1 Water tank 3 2.2 Hygrometer 3 2.3 Gas supply 3 2.4 Plugs 3 3 Procedure 3 4 Severity 3 5 Details to b
19、e specified 3 Figure 1 Apparatus 3 latest date by which the ENhas to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1998-06-01 latest date by which the national standards conflicting with the EN haveto be withdrawn (dow) 1998-06-01EN61300-2-
20、32:1997 BSI 04-2000 3 1 General 1.1 Scope and object The purpose of this part of IEC1300 is to determine the suitability of closures for use in wet environments including underwater submersion. The test is suitable for closures only. 1.2 General description Dry air, nitrogen or helium with a moistur
21、e content of less than5ppm is passed through a submerged closure at a rate of between20ml/min and50ml/min and then through a hygrometer until a steady reading at the hygrometer is obtained. The difference of the moisture content of the incoming gas (r 1 ) and on the gas exiting the closure (r 2 ) is
22、 then translated into a water vapour permeation rate, expressed as4g/h. 2 Apparatus The apparatus is shown in Figure 1 and consists of the following elements. 2.1 Water tank A water tank capable of maintaining a temperature of 1 C within the range of10 C to60 C. 2.2 Hygrometer A device to measure th
23、e moisture content of the incoming and exiting gas. 2.3 Gas supply Dry gas supply (air, nitrogen or helium with a humidity of less than5ppm). 2.4 Plugs Metal plugs for the closure which have connections for the gas supply lines. 3 Procedure 3.1 Assemble the closure with the metal plugs and gas suppl
24、y lines. 3.2 Submerge the closure in the water bath. 3.3 Connect the dry gas source directly to the hygrometer and obtain a steady-state value of the moisture content (r 1 ) at the flow rate to be used during the test. 3.4 Direct the gas through the closure and obtain a steady-state value of the moi
25、sture content (r 2 ) of the gas flowing through the closure at the same rate used to obtain the initial reading (r 1 ). 3.5 The difference in moisture content between the incoming gas (r 1 ) and the outgoing gas (r 2 ) is then translated into a vapour permeation rate expressed in4g/h. 4 Severity The
26、 severity is determined by the allowable vapour permeation rate expressed in4g/h. 5 Details to be specified The following details, as applicable, shall be specified in the detail specification: Any special precautions to be taken when assembling the closure and fitting the metal plugs and capillary
27、tubes Special procedures for mounting the closure in the water bath Temperature of water bath Preconditioning of the closure Maximum allowable vapour permeation rate Deviations from test procedure Additional pass/fail criteria Figure 1 ApparatusBS EN 61300-2-32: 1997 IEC 61300-2-32: 1995 BSI 389 Chi
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