1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Textiles - Determination of resistance to water penetration - Hydrostatic pressure testBS EN ISO 811:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 811 May 2018 ICS 59.080.30 Supersedes EN 20811:1992Englis
2、h Version Textiles - Determination of resistance to water penetration - Hydrostatic pressure test (ISO 811:2018) Textiles - Dtermination de la rsistance la pntration de leau - Essai sous pression hydrostatique (ISO 811:2018) Textilien - Bestimmung des Widerstandes gegen das Durchdringen von Wasser -
3、 Hydrostatischer Druckversuch (ISO 811:2018) This European Standard was approved by CEN on 15 March 2018. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteratio
4、n. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by
5、translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, F
6、inland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR ST
7、ANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 811:2018 ENational forewordTh
8、is British Standard is the UK implementation of EN ISO 811:2018. It is identical to ISO 811:2018. It supersedes BS EN 20811:1992, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee TCI/24, Physical testing of textiles.A list of organizations represented o
9、n this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 84862
10、9ICS 59.080.30Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN I
11、SO 811:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 811 May 2018 ICS 59.080.30 Supersedes EN 20811:1992English Version Textiles - Determination of resistance to water penetration - Hydrostatic pressure test (ISO 811:2018) Textiles - Dtermination de la rsistance la pntration de leau -
12、 Essai sous pression hydrostatique (ISO 811:2018) Textilien - Bestimmung des Widerstandes gegen das Durchdringen von Wasser - Hydrostatischer Druckversuch (ISO 811:2018) This European Standard was approved by CEN on 15 March 2018. CEN members are bound to comply with the CEN/CENELEC Internal Regulat
13、ions which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
14、 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN
15、members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Po
16、rtugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploit
17、ation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 811:2018 EBS EN ISO 811:2018EN ISO 811:2018 (E) 3 European foreword This document (EN ISO 811:2018) has been prepared by Technical Committee ISO/TC 38 “Textiles” in collaboration with Technical Committee
18、CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2018, and conflicting national standards shall be withd
19、rawn at the latest by November 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 20811:1992. According to the CEN-CEN
20、ELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, I
21、celand, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 811:2018 has been approved by CEN as EN ISO 811:2018 without any mod
22、ification. BS EN ISO 811:2018ISO 811:2018(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Reagents 16 Apparatus . 27 Atmosphere for conditioning and testing 28 Test specimen 39 Test procedure 310 Calculations and expression of results. 411 Test report . 4Bib
23、liography 5 ISO 2018 All rights reserved iiiContents PageBS EN ISO 811:2018ISO 811:2018(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
24、 through ISO technical committees. Each member body interested in a subject 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 col
25、laborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different appr
26、oval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be th
27、e subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).
28、Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISO
29、s adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 2, Cleansing, finishing and water resistance tests.Th
30、is second edition cancels and replaces the first edition (ISO 811:1981). The main changes to the previous edition are as follows: the first element of the title changed from Textile fabrics to Textiles to be in line with other TC 38/SC 2 documents; in the Scope, clarification that the applicability
31、of the method is intended for water resistant fabrics; major editorial changes were made throughout the document to bring it up to date. iv ISO 2018 All rights reservedBS EN ISO 811:2018INTERNATIONAL STANDARD ISO 811:2018(E)Textiles Determination of resistance to water penetration Hydrostatic pressu
32、re test1 ScopeThis document specifies a hydrostatic pressure method for determining the resistance of fabrics to penetration by water. The method is applicable to all types of fabrics which are intended to be water resistant whether or not they have been given a water-resistant or water-repellent fi
33、nish.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (inclu
34、ding any amendments) applies.ISO 139, Textiles Standard atmospheres for conditioning and testingISO 3696, Water for analytical laboratory use Specification and test methods3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain termino
35、logical databases for use in standardization at the following addresses: ISO Online browsing platform: available at h t t p s :/ www .iso .org/ obp IEC Electropedia: available at h t t p :/ www .electropedia .org/ 3.1facefabric surface intended to be the outer visible side in an end product4 Princip
36、leThe hydrostatic head supported by a fabric is a measure of the opposition to the passage of water through the fabric. A specimen is subjected to a steadily increasing pressure of water on one side of the fabric, under standard conditions, until penetration occurs in three places. The pressure at w
37、hich the water penetrates the fabric at the third place is noted. The water pressure may be applied from below or from above the test specimen. The chosen alternative shall be stated in the test report.The result is immediately relevant to the behaviour of fabric articles which are subjected to wate
38、r pressure for short or moderate periods of time.5 Reagents5.1 Water, grade 3 water in accordance with ISO 3696. The water is in contact with the test specimen at either 20 C 2 C or 27 C 2 C. The chosen alternative shall be stated in the test report. (The use of water at the higher temperature will
39、yield lower values of hydrostatic head; the magnitude of this effect may vary from fabric to fabric.) ISO 2018 All rights reserved 1BS EN ISO 811:2018ISO 811:2018(E)6 ApparatusThe usual laboratory apparatus and, in particular, the following. 6.1 Fabric clamp. It should be possible to clamp the speci
40、men of fabric in such a way thata) it is horizontal and is not bulging;b) an area of the fabric of 10 000 mm2(100 cm2) is subjected to steadily increasing water pressure from below or from above the fabric;c) no leakage of water takes place at the clamps during the test period;d) the specimen does n
41、ot slip in the clamps;e) any tendency for penetration to occur at the clamped edge of the specimen is minimized.With some forms of apparatus, it is recommended that the clamps are faced with a suitable grade of rubber. It can be helpful to use a sealing wax around the clamps to help prevent water fr
42、om leaking.6.2 Mechanism for measuring the increase in water pressure.The rate of increase of water pressure shall be 10 cm H2O/min 0,5 cm H2O/min or 60 cm H2O/min 3 cm H2O/min (9,8 mbar H2O/min 0,5 mbar H2O/min or 58,8 mbar H2O/min 2,9 mbar H2O/min). Results obtained by different rates may not be t
43、he same. The chosen alternative rate shall be stated in the test report.NOTE The higher rate of increase of water pressure is more applicable when testing fabrics with high water resistance. 6.3 Manometer (for manual types of equipment that are not electronic). The accuracy of the manometer, if used
44、, shall be stated in the test report. If used, the following conditions apply.a) It is necessary to provide a manometer of suitable range. 1) A manometer which provides for pressures up to 1 m H2O is suitable for fabrics similar in construction to gabardines. 2) For fabrics of closer construction, i
45、t is advisable to use a manometer which provides for pressures up to 2 m H2O.b) If more than one testing head is used in conjunction with the manometer, means shall be provided for separately disconnecting them. This is to prevent a high rate of leakage through test specimens already penetrated at t
46、hree places. With most forms of apparatus, such a leakage can markedly reduce the rate of increase of pressure on the remaining specimens still under test.7 Atmosphere for conditioning and testingConditioning and testing shall be carried out according to ISO 139. If so agreed, conditioning and testi
47、ng may be carried out in the ambient temperature. The presence of vapours of volatile organic liquids, such as diethyl ether, in the laboratory when this test is being carried out can affect the results.2 ISO 2018 All rights reservedBS EN ISO 811:2018ISO 811:2018(E)8 Test specimenAfter receipt, hand
48、le the fabric as little as possible, avoid folding it sharply and do not treat it in any way (e.g. by ironing it) other than by conditioning. Take at least five test specimens from different places in the fabric so that they do not contain the same yarns and represent the material as fully as possib
49、le. The fabric may be tested without cutting specimens.Areas with deep creases or fold marks shall not be tested.9 Test procedure9.1 Provide freshly distilled water (5.1) for each specimen tested.If the instrument used is of the type in which the water to be used for testing is contained in the testing head(s) and rises to come into contact with the specimen, the surface of the water in the testing head(s) may be cleaned in one of the following ways, stated in order of preference.a) Empty the testing head(s) and re
