EN 12094-11:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vgrajeni gasilni sistemi - Sestavni deli sistemov za gašenje s plinom - 11. del: Zahteve in preskusne metode za mehanske naprave za tehtanjeOrtsfeste Brandbekämpfungsanlagen - Bauteile für Löschanlagen mit gasförmigen Löschmitteln - Teil 11: Anforderungen und Prüfverfahren für mechanische WägeeinrichtungenInstallations fixes de lutte contre l'incendie - Eléments constitutifs pour installations d'extinction a gaz - Partie 11: Exigences et méthodes d'essai pour dispositifs de pesée mécaniquesFixed firefighting systems - Components for gas extinguishing systems - Part 11: Requirements and test methods for mechanical weighing devices13.220.10Gašenje požaraFire-fightingICS:Ta slovenski standard je istoveten z:EN 12094-11:2003SIST EN 12094-11:2003en01-maj-2003SIST EN 12094-11:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12094-11March 2003ICS 13.220.20English versionFixed firefighting systems - Components for gas extinguishingsystems - Part 11: Requirements and test methods formechanical weighing devicesInstallations fixes de lutte contre l'incendie - Elémentsconstitutifs pour installations d'extinction à gaz - Partie 11:Exigences et méthodes d'essai pour dispositifs de peséemécaniquesOrtsfeste Brandbekämpfungsanlagen - Bauteile fürLöschanlagen mit gasförmigen Löschmitteln - Teil 11:Anforderungen und Prüfverfahren für mechanischeWägeeinrichtungenThis European Standard was approved by CEN on 7 November 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,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12094-11:2003 ESIST EN 12094-11:2003

Clauses of this European Standard addressing essential requirements orother provisions of EU-Directives.16Bibliography.19SIST EN 12094-11:2003

1)Under preparation.SIST EN 12094-11:2003

Compliance24.4.1
Function at normal temperature34.5
Function at high and low temperature44.6
Overload54.4.2
Function at normal temperature64.7
Corrosion74.4.2
Function at normal temperature4.3 ComplianceThis test relates to the requirements of 3.1.A visual and measurement check shall be made to determine that the test sample corresponds to the description inthe drawings, parts lists, description of functions, operating and installation instructions.4.4 Function at normal temperature4.4.1This test relates to the requirements of 3.3.If a weighing device is specified by the manufacturer for one combination of gross load and net load, the followingsequence a) to d) shall be conducted with the specified gross load and net load.If a weighing device is specified by the manufacturer for several combinations of gross load and net load, thefollowing sequence a) to d) shall be conducted with the following combinations of gross load and net load:-
maximum gross load, maximum net load;-
maximum gross load, minimum net load;-
medium gross load, medium net load;-
minimum gross load, maximum net load;-
minimum gross load, minimum net load.a) Load the test sample with the gross load including an amount of water. The mass of the water shall be at least15 % of the net load;b) Adjust the test sample in accordance with the installation instructions of the manufacturer to correspond to theactual test load applied;c) Carry out the following steps:1) decrease the test load corresponding to a loss of 5 % of the net load by draining water in a period of 2 minto 5 min into a collecting container;2) stop when loss is indicated;SIST EN 12094-11:2003

maximum gross load, minimum net load;-
minimum gross load, minimum net load.4.5 Function at high and low temperatureThis test relates to the requirements of 3.4.Condition the test sample for at least 4 h at the intended test temperature, i.e. at:a) (0220--) °C for low temperature;b) (3050++) °C for high temperature.Conduct the test described in 4.4.2 at both test temperatures.For the low test temperature a suitable liquid for use at this temperature shall be used instead of water.4.6 OverloadThis test relates to the requirements of 3.5.The test sample shall be statically loaded with twice the maximum gross load for 15 min.The force shall be applied in any way which represents the intended normal use.Conduct the test as described in 4.4.2.4.7 CorrosionThis test relates to the requirements specified in 3.6.A specimen shall be suspended freely in its normal installation attitude.The test set-up comprises a container of 5 l volume, made of heat-resistant glass and with a corrosion-resistantcover which is shaped to prevent condensate dripping onto the specimen. (If a container 10 l in volume is used, thequantities of chemicals given below shall be doubled.) The container is heated electrically and the side walls arecooled with water. A thermostat regulates the heating so as to maintain a temperature of approximately 45 °Cinside the container. During testing water is passed through a cooling coil wrapped around the container; it shallflow fast enough that its temperature at the discharge point is below 30 °C.SIST EN 12094-11:2003
...