1、STD-BSI BS EN bL300-2-32-ENGL 1997 1624669 Ob58835 810 = BRITISH STANDARD Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 2.32 Tests - Water vapour permeation The European Standard EN 61300-232 : 1997 has the status of a British standard ICs 33
2、180.20 BS EN 1997 1995 61300-2-32 : IEC 61300-2-32 : NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW STD-BSI BS EN bL300-2-32-ENGL 1997 1b24bb9 Clb5883b 757 Amd.No. BS EN 61300-2-32 : 1997 Date Text affected National foreword This British Standard is the English language vers
3、ion of EN 61300-232 : 1997. It is identical with IEC 61300-232 : 1995. The UK participation in its preparation was entrusted by Technical Committee EPM6, Fibre optics, to Subcommittee EPL6/2, Interconnecting devices and passive components, which has the responsibility to: - aid enquirers to understa
4、nd the text; - present to the responsible internationalEuropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; - monitor related international and European developments and promuigate them in the UK This British Standard, having been prepa
5、red under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 November 1997 O BSI 1997 ISBN O 680 28681 2 A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1
6、January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as iEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references At
7、tention is drawn to the fact that CEN and CENELEC Standards normaiiy include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these intrnational or European publications may be found in the B
8、SI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Fnd facility of the BSI Standards Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document compris
9、es a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. STD.BS1 BS EN b1300-2-32-ENGL 1777 D 1b24bb9 Ob58837 b73 I * * rn EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 6 1 300-2-32 August 1997 ICs 33.1 80.20 English version Fibre optic
10、interconnecting devices and passive components Basic test and measurement procedures Part 2-32: Tests - Water vapour permeation (IEC 61 300-2-321995) Dispositifs dinterconnexion et composants passifs fibres optiques Mthodes fondamentales dessais et de mesures Partie 2-32: Essais - Rsistance la Licht
11、wellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prf- und Meverfahren Teil 2-32: Prfungen: Wasser- eindringung vapeur deau (IEC 61 300-2-32:1995) (CE1 61 300-2-32: 1995) This European Standard was approved by CENELEC on 1997-07-01. CENELEC members are bound to comply with the C
12、ENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-todate lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to
13、any CENELEC member. This European Standard exists in three official versions (English, French, German). A version 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 v
14、ersions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Sta
15、ndardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 1997 CENELEC - Ali rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61 300-2
16、321997 E STD-BSI BS EN b1300-2-32-ENGL 1997 1b24bb7 Ub58838 52T Page 2 EN 61300-2-32 : 1997 Foreword The text of the International Standard IEC 61 300-2-32: 1995, prepared by SC 868, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the formal
17、vote and was approved by CENELEC as EN 61 300-2-32 on 1997-07-01 without any modification. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1 998-06-0 1 - latest date by whic
18、h the national standards conflicting with the EN have to be withdrawn (dwl 1998-06-01 Endorsement notice The text of the International Standard IEC 61 300-2-32: 1 995 was approved by CENELEC as a European Standard without any modification. Page 3 EN 61300-2-32 : 1997 FIBRE OPTIC INTERCONNECTING DEVI
19、CES AND PASSIVE COMPONENTS - BASIC TEST AND MEASUREMENT PROCEDURES - Part 2-32: Tests - Water vapour permeation 1 General 1.1 Scope and object The purpose of this pari of IEC 1300 is to determine the suitability of closures for use in wet environments including underwater submersion. The test is sui
20、table for closures only. 1.2 General description Dry air, nitrogen or helium with a moisture content of less than 5 ppm is passed through a submerged closure at a rate of between 20 ml/min and 50 mumin and then through a hygrometer until a steady reading at the hygrometer is obtained. The difference
21、 of the moisture content of the incoming gas (r,) and on the gas exiting the closure (r2) is then translated into a water vapour permeation rate, expressed as pgh. 2 Apparatus The apparatus is shown in figure 1 and consists of the following elements. 2.1 Water tank A water tank capable of maintainin
22、g a temperature of 11 OC within the range of 10 OC to 60 OC. 2.2 Hygrometer A device to measure the moisture content of the incoming and exiting gas. 2.3 Gas supply Dry gas supply (air, nitrogen or helium with a humidity of less than 5 ppm). 2.4 Plugs Metal plugs for the closure which have connectio
23、ns for the gas supply lines. Page 4 EN 61300-2-32 : 1997 Hygrometer Dry air, nitrogen or helium gas Capillary gas connections Water tank A = metal plug I Water(10Cto6oC) Figure 1 - Apparatus 3 Procedure 3.1 Assemble the closure with the metal plugs and gas supply lines. 3.2 Submerge the closure in t
24、he water bath. 3.3 Connect the dry gas source directly to the hygrometer and obtain a steady-state value of the moisture content (rl) 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 moisture content (i2) of the gas flowing th
25、rough the closure at the same rate used to obtain the initial reading (r,). 3.5 The difference in moisture content between the incoming gas (rl) and the outgoing gas (r2) is then translated into a vapour permeation rate expressed in ug/h. 4 Severity The severity is determined by the allowable vapour
26、 permeation rate expressed in pg/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 tubes - Special procedures for mounting the
27、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 STD-BSI BS EN b1300-2-32-ENGL 1777 W Lb24bb7 Ob58841 O14 = BS EN 1997 1995 61300-2-32 : IEC 61300-2-32 :
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