SIST EN 12094-10:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ortsfeste Brandbekämpfungsanlagen - Bauteile für Löschanlagen mit gasförmigen Löschmitteln - Teil 10: Anforderungen und Prüfverfahren für Druckmessgeräte und DruckschalterInstallations fixes de lutte contre l'incendie - Eléments constitutifs pour installations d'extinction a gaz - Partie 10: Exigences et méthodes d'essai pour manometres et contacts a pressionFixed firefighting systems - Components for gas extinguishing systems - Part 10: Requirements and test methods for pressure gauges and pressure switches17.100Merjenje sile, teže in tlakaMeasurement of force, weight and pressure13.220.10Gašenje požaraFire-fightingICS:Ta slovenski standard je istoveten z:EN 12094-10:2003SIST EN 12094-10:2003en01-september-2003SIST EN 12094-10:2003SLOVENSKI
STANDARD



SIST EN 12094-10:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12094-10April 2003ICS 13.220.20English versionFixed firefighting systems - Components for gas extinguishingsystems - Part 10: Requirements and test methods for pressuregauges and pressure switchesInstallations fixes de lutte contre l'incendie - Elémentsconstitutifs pour installations d'extinction à gaz - Partie 10:Exigences et méthodes d'essai pour manomètres etcontacts à pressionOrtsfeste Brandbekämpfungsanlagen - Bauteile fürLöschanlagen mit gasförmigen Löschmitteln - Teil 10:Anforderungen und Prüfverfahren für Druckmessgeräte undDruckschalterThis European Standard was approved by CEN on 13 February 2003.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 12094-10:2003 ESIST EN 12094-10:2003



EN 12094-10:2003 (E)2ContentspageForeword.3Introduction.51Scope.62Normative references.63Terms and definitions.64Requirements.74.1Pressure gauges.74.2Pressure switches.74.3Documentation.85Test methods.85.1Pressure gauges.85.2Pressure switches.96Marking.107Evaluation of conformity.117.1General.117.2Initial type testing.117.3Factory production control (FPC).12Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EUConstruction Products Directive.15Bibliography.19SIST EN 12094-10:2003



EN 12094-10:2003 (E)3ForewordThis document (EN 12094-10:2003) has been prepared by Technical Committee CEN /TC 191, "Fixed firefightingsystems", 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 orby endorsement, at the latest by October 2003, and conflicting national standards shall be withdrawn at the latestby April 2006.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association, and supports essential requirements of EU Directive(s).For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.This part of EN 12094 is one of a number of European Standards prepared by CEN/TC 191 covering components forgas extinguishing systems.They are included in a series of European Standards planned to cover:- gas extinguishing systems (EN 12094)- sprinkler systems (EN 12259 and EN 12845)- powder systems (EN 12416)- explosion protection systems (EN 26184)- foam systems (EN 13565)- hose systems (EN 671)- smoke and heat control systems (EN 12101)- water spray systems1)This European Standard has the general title "Fixed firefighting systems – Components for gas extinguishingsystems" and will consist of the following parts:- Part 1: Requirements and test methods for electrical automatic control and delay devices- Part 2: Requirements and test methods for non-electrical automatic control and delay devices- Part 3: Requirements and test methods for manual triggering and stop devices- Part 4: Requirements and test methods for container valve assemblies and their actuators- Part 5: Requirements and test methods for high and low pressure selector valves and their actuators for CO2systems- Part 6: Requirements and test methods for non-electrical disable devices for CO2 systems- Part 7: Requirements and test methods for nozzles for CO2 systems
1)under preparationSIST EN 12094-10:2003



EN 12094-10:2003 (E)4- Part 8: Requirements and test methods for flexible connectors for CO2 systems- Part 9: Requirements and test methods for special fire detectors- Part 10: Requirements and test methods for pressure gauges and pressure switches- Part 11: Requirements and test methods for mechanical weighing devices- Part 12: Requirements and test methods for pneumatic alarm devices- Part 13: Requirements and test methods for check valves and non-return valves- Part 16: Requirements and test methods for odorizing devices for CO2 low pressure systems- Part 17: Requirements and test methods for pipe hangers- Part 20: Requirements and test methods for compatibility of componentsThis document includes a Bibliography.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 12094-10:2003



EN 12094-10:2003 (E)5IntroductionIt has been assumed in the preparation of this European Standard that the execution of its provisions is entrusted toappropriately qualified and experienced people.All pressure data in this European Standard are given as gauge pressures in bar, unless otherwise stated.NOTE1 bar = 105 N m-2 = 100 kPa.SIST EN 12094-10:2003



EN 12094-10:2003 (E)61 ScopeThis European Standard specifies requirements and describes test methods for pressure gauges and pressureswitches.This European Standard is applicable for pressure gauges for monitoring of pilot, control, alarm and storagecontainers of fire extinguishing systems filled with non-liquefied inert gases or pressurized halocarbon gases.This European Standard is applicable for pressure switches for monitoring of pilot, control, alarm and storagecontainers of fire extinguishing systems filled with non-liquefied inert gases or pressurized halocarbon gases andremote indication of leakage.This European Standard does not cover discharge indicating pressure switches.2 Normative referencesThis European Standard incorporates by dated or undated references, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 837-1 : 1996, Pressure gauges - Part 1: Bourdon tube pressure gauges - Dimensions, metrology, requirementsand testing.EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989).3 Terms and definitionsFor the purposes of this European Standard the following terms and definitions apply.3.1CO2-high-pressure installationfire extinguishing installation in which the CO2 is stored at ambient temperature. For example, the pressure of the CO2in storage is pabs = 58,6 bar at 21 °C3.2CO2-low-pressure installationfire extinguishing installation in which the CO2 is stored at low temperature, normally –19 °C to –21 °C3.3halocarbon gasextinguishing agent that contains as primary components one or more organic compounds containing one or more ofthe elements fluorine, chlorine, bromine or iodine3.4halocarbon gas installationfire extinguishing installation in which the halocarbon gas is stored at ambient temperature3.5inert gasnon liquefied gas or mixture of gases which extinguish the fire mainly by reducing the oxygen-concentration in theprotected zone, e.g. Argon, Nitrogen or CO2 or mixtures of these gases3.6inert gas installationfire extinguishing installation in which the inert gas is stored at ambient temperatureSIST EN 12094-10:2003



EN 12094-10:2003 (E)74 Requirements4.1 Pressure gaugesNOTEThe range of a pressure gauge should be greater than the pressure developed in the container at 50 °C or themaximum pressure given by the manufacturer, but not higher than the next highest standard range of EN 837-1.4.1.1 GeneralThe component shall comply with the technical requirements of EN 837-1.4.1.2 Accuracy class and nominal sizeThe component shall have at least accuracy class 1,6 and at least nominal size 40 as given in EN 837-1.4.1.3 CorrosionThe component shall meet the same accuracy requirements of EN 837-1 after being subjected to the corrosiveatmosphere as described in 5.2.8 with the inlet sealed during conditioning.4.2 Pressure switches4.2.1 DesignThe switching accuracy of the component at the designated setting point shall not exceed ± 2,5% of the pressuredeveloped in the container at 50 °C or shall not exceed ± 2,5% of the maximum pressure expected at the place of usein the system.The component shall be specified by the manufacturer for a working pressure of at least the pressure developed inthe container at 50 °C.The manufacturer shall specify the switching capacity.The component shall incorporate self-resetting contacts.The component shall be designed to have at least class IP 54 of EN 60529.4.2.2 FunctionWhen tested in accordance with 5.2.4 the component accuracy shall be in accordance with 4.2.1 and the electricalconnection(s) shall function correctly.4.2.3 Internal pressureWhen tested in accordance with 5.2.5 the component shall not leak. The component shall operate satisfactorily whentested in accordance with 5.2.4 after being tested in accordance with 5.2.5.4.2.4 Operational reliabilityThere shall be no deterioration of performance when the component is tested as described in 5.2.6.SIST EN 12094-10:2003



EN 12094-10:2003 (E)84.2.5 TemperatureWhen tested in accordance with 5.2.7 at – 20 °C and + 50 °C the component accuracy at the designated setting pointshall not exceed ± 5% of either the pressure developed in the container at 50 °C or the maximum pressure expectedat the place of use in the system. The electrical connection(s) shall function correctly.4.2.6 CorrosionThe component shall operate satisfactorily when tested in accordance with 5.2.4 after being subjected to the corrosiveatmosphere as described in 5.2.8 with the inlet open.4.3 Documentation4.3.1The manufacturer shall prepare and maintain documentation.4.3.2The manufacturer shall prepare installation and user documentation, which shall be submitted to the testingauthority together with the sample(s). This documentation shall comprise at least the following:a) a general description of the component, including a list of its features and functions;b) a technical specification including:1) the information mentioned in 4.1 and 4.2, if applicable;2) sufficient information to permit an assessment of the compatibility with other components of the system (ifapplicable e.g. mechanical, electrical or software compatibility);c) installation instructions including mounting instructions;d) operating instructions;e) maintenance instructions;f) routine testing instruction, if appropriate.4.3.3The manufacturer shall prepare design documentation, which shall be submitted to the testing authoritytogether with the sample(s), except where the conditions of supply to the manufacturer make this impossible. Thisdocumentation shall include drawings, parts lists, block diagrams (if applicable), circuit diagrams (if applicable) anda functional description to such an extent that compliance with this standard may be checked and that a generalassessment of the design is possible.5 Test methods5.1 Pressure gauges5.1.1 Test conditions
and testsNOTESee 5.1.3 and EN 837-1.5.1.2 Compliance and conformityA visual and measurement check shall be made with one sample to determine that the component corresponds to thedescription in the drawings, parts lists, description of functions, operating and installation instructions.5.1.3 CorrosionOne sample shall be conditioned in accordance with 5.2.8 followed by an accuracy check in accordance withEN 837-1.SIST EN 12094-10:2003



EN 12094-10:2003 (E)95.2 Pressure switches5.2.1 Test conditionsThe components shall be assembled for test as specified in the technical documentation. The tests shall be carriedout at a temperature of (25 ± 10) °C, except when otherwise specified for a particular test.The tolerance for all test parameters is 5 %, unless otherwise stated.5.2.2 Test samples and order of testsFor the tests three samples are needed. The order of tests is shown in Table 1.Table 1 — Order of testsTest order forTestssample Asample Bsample C5.2.3 Compliance1115.2.4 Function322 and 45.2.5 Internal pressure25.2.6 Operational reliability45.2.7 Temperature35.2.8 Corrosion35.2.3 ComplianceA visual and measurement check shall be made to determine whether the test sample corresponds to the descriptionin the drawings, parts list, description of functions, operating and installation.5.2.4 Function under normal conditionsThis test relates to the requirements of 4.2.2.The following test cycle shall be carried out 10 times:a) A pressure of 1,1 times the pressure at the designated setting point shall be applied using air or Nitrogen;b) The pressure to the switch point shall be decreased by a rate calculated to reach the pressure at thedesignated setting point in (1 ± 0,5) min;c) The switch point pressure shall be recorded.5.2.5 Internal pressureThis test relates to the requirements of 4.2.3.The sample shall be connected to a suitable hydraulic pressure supply. Provision for venting shall be available.Vent the system of air and increase the pressure to (1,2 ± 0,05) times the specified working pressure. Maintain thispressure for a period of (5 ± 1) min. After this period release the hydraulic pressure.SIST EN 12094-10:2003



EN 12094-10:2003 (E)105.2.6 Operational reliabilityThis test relates to the requirements of 4.2.4.The test cycle shall be carried out 100 times as described in 5.2.4.5.2.7 TemperatureThis test relates to the requirements of 4.2.5.The test shall be carried out according to 5.2.4 at (--2020)
C and (++5002) °C after conditioning at the testtemperature for (2 ± 0,5) h.5.2.8 CorrosionA specimen shall be suspended freely in its normal installation attitude.The test set-up comprises a container 5 l in 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.The combination of heating and cooling is designed to ensure that vapours will condense on the surface of thespecimen. The sulphur dioxide atmosphere is generated in the 5-litre container with a solution of 20 g of sodiumthiosulphate (Na2S2O3 x 5H2O) in 500 cm3 of distilled water, to which 20 cm3 of dilute sulphuric acid is addeddaily. The dilute sulphuric acid comprises 128 cm3 of one molar sulphuric acid (H2SO4) dissolved in 1 l of distilledwater. The test specimen shall be removed from the container after 8 days; the container shall be cleaned. Thenthe procedure described above is repeated for a further period of 8 days.After a total of 16 days, the specimen is removed from the container and allowed to dry for seven days at atemperature of (20 ± 5) °C at maximum relative humidity of 70 %.6 MarkingPressure gauges shall be marked in accordance with EN 837-1:1996, 9.6.7.Pressure switches shall be marked with:a) name or trademark of the manufacturer or supplier;b) model designation (type);c) some mark(s) or code(s) (e.g. serial number or batch code), by which, at least, the date or batch and place ofmanufacture (if several places of manufacture) can be identified by the manufacturer; andd) set-point pressure.The markings shall be non-detachable, non-flammable, permanent and legible.Where the requirements of ZA.3 give the same information as above, the requirements of this clause 6 have beenmet.SIST EN 12094-10:2003



EN 12094-10:2003 (E)117 Evaluation of conformity7.1 GeneralThe compliance of the component with the requirements of this European Standard shall be demonstrated by:¾ initial typ
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