EN 1279-2:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Steklo v gradbeništvu - Izolacijski stekleni elementi - 2. del: Preskus tipa na izolacijskih steklenih elementih, polnjenih z zrakomGlas im Bauwesen - Mehrscheiben-Isolierglas - Teil 2: Langzeitprüfverfahren und Anforderungen bezüglich FeuchtigkeitsaufnahmeVerre dans la construction - Vitrage isolant préfabriqué scellé - Partie 2: Méthode d'essai de longue durée et exigences en matiere de pénétration d'humiditéGlass in building - Insulating glass units - Part 2: Long term test method and requirements for moisture penetration81.040.20Steklo v gradbeništvuGlass in buildingICS:Ta slovenski standard je istoveten z:EN 1279-2:2002SIST EN 1279-2:2004en01-september-2004SIST EN 1279-2:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1279-2November 2002ICS 81.040.20English versionGlass in building - Insulating glass units - Part 2: Long term testmethod and requirements for moisture penetrationVerre dans la construction - Vitrage isolant préfabriquéscellé - Partie 2: Méthode d'essai de longue durée etexigences en matière de pénétration d'humiditéGlas im Bauwesen - Mehrscheiben-Isolierglas - Teil 2:Langzeitprüfverfahren und Anforderungen bezüglichFeuchtigkeitsaufnahmeThis European Standard was approved by CEN on 5 September 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1279-2:2002 ESIST EN 1279-2:2004

Reference method for dew point temperature measurement.15A.1General.15A.2Apparatus and materials.15A.3Procedure.15Annex B (normative)
Moisture content measurement according to the 950 °C drying method.17B.1Applicability.17B.2Apparatus, materials and preparatory work.17B.3Initial and final moisture content.18B.4Standard moisture adsorption capacity.20Annex C (normative)
Moisture content measurement according to the Karl Fischer method.21C.1Applicability.21C.2Apparatus, materials and preparatory work.21C.3Initial and final moisture content.22C.4Standard moisture adsorption capacity.25Annex D (normative)
Establishing the standard moisture adsorption capacity of desiccants.27D.1General.27D.2Appropriate information.27D.3Generally accepted values for desiccant in bulk.28D.4Desiccant manufacturing.28Bibliography.29SIST EN 1279-2:2004

t2 = 1 h,
t3 = 5 h,
t4 = 1 h,
t5 = total cycle time 12 h ;–Tolerance on time intervals: less than 1 min;–Temperatures of the centrally located test specimen during cycle:–Q h = (53,0 ± 1,0) °C (high temperature);–Q l = (-18,0 ± 1,0) °C (low temperature);–Q s = (14 ± 2) °C/h (slopes).Figure 2 — Temperature/time and humidity/time relations in cycling stageNOTEThe two parts of the process can be carried out in a single cabinet or in two separate cabinets. If two cabinets areused allow up to 4 h for moving the test specimens from one to the other for the second period.The indicated temperatures and temperature tolerances in Figures 1 and 2 are valid for the glass of that unit whichis centrally located in the cabinet(s). The temperature of that centrally located test specimen shall be recordedcontinuously. Also the relative humidity and air temperature, measured at the most suitable location in the testcabinet(s) shall be recorded continuously. Any deviations in temperature and in relative humidity will be noted in thetest report.The glass temperatures of the other test specimens in the cabinet shall be:–during cycling:· high temperatureQ = (Qh ± 1,0) °C;· low temperatureQ = (Ql
± 2,0) °C;SIST EN 1279-2:2004
or
ITTTTfiavcaviav=--100,,, in %(4)SIST EN 1279-2:2004
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