Specification for the performance of automatic tank contents gauges

This European Standard specifies the minimum performance requirements for various classes of automa-tic tank contents gauges which are limited to static tanks of shop fabricated manufacture both metallic and non metallic, underground and above ground which do not exceed 100 000 l in capacity or 5 m in height.
It is applicable to gauges for fuels (products) which are flammable, having a flash point up to but not exceeding 100 °C, stored at premises (e.g. filling stations) at which fuel is dispensed for use in vehicles and other forms of transportation. This European Standard applies to gauges suitable for use at ambient tempera-tures and subject to normal operational pressure variations.
Liquefied gases are not covered by this standard.
This European Standard relates to the measurement of product level, measurement of product tempe-rature and detection of the presence of free water.
The gauges covered by this standard are not intended for use in meeting legal metrology requirements.

Anforderungen an automatische Tankinhaltsmessgeräte

Diese Europäische Norm legt Mindestanforderungen an unterschiedliche Klassen von Füllstandmessgeräten fest, die nur für den Einsatz in unter- und oberirdisch aufgestellten, ortsfesten, werksgefertigten Tanks aus metallischen und nichtmetallischen Werkstoffen gelten, deren Füllvolumen nicht mehr als 100 000 l beträgt und die nicht höher als 5 m sind.
Sie ist anzuwenden auf Füllstandmessgeräte für Kraftstoffe (Produkte), die brennbar sind, einen Flammpunkt bis einschließlich 100 °C haben und an Örtlichkeiten gelagert werden, in denen Kraftstoff für Kraftfahrzeuge und sonstige Transportmittel abgegeben wird (z. B. Tankstellen). Diese Europäische Norm gilt für Füllstandmessgeräte, die für den Einsatz bei Umgebungstemperaturen und normalen betriebsbedingten Druckverhältnissen geeignet sind.
Flüssiggase werden in dieser Norm nicht erfasst.
Die vorliegende Europäische Norm behandelt die Messung des Füllstandes und der Temperatur des Produkts sowie die Anzeige von abgesetztem Wasser.
Die in dieser Norm erfassten Füllstandmessgeräte sind nicht für Anwendungen vorgesehen, bei denen Anforderungen des gesetzlichen Messwesens zu erfüllen sind.

Spécification de performance des dispositifs mesureurs automatiques de niveau de réservoir

La présente Norme européenne spécifie les exigences minimales de performances pour différentes classes de dispositifs mesureurs automatiques de niveau de réservoir, ou jauges de niveau, qui se limitent aux réservoirs statiques, fabriqués en atelier, métalliques et non métalliques, enterrés et aériens, dont la contenance ne dépasse pas 100 000 l ou la hauteur 5 m.
Elle s'applique aux jauges pour combustibles (produits) inflammables, qui ont un point d'éclair d'au maximum 100 °C, stockés sur des sites (des stations services par exemple) où le carburant est distribué pour la consommation de véhicules et autres moyens de transport. La présente Norme européenne s'applique aux jauges destinées à être utilisées à température ambiante et soumises à des variations de pression de fonctionnement normales.
Les gaz liquéfiés ne sont couverts par la présente norme.
La présente Norme européenne concerne les mesurages de niveau et de température du produit et la détection de la présence d'eau.
Les jauges couvertes par la présente norme ne sont pas destinées à être utilisées pour répondre aux exigences de la métrologie légale.

Specifikacije za avtomatske kazalnike nivoja vsebine v rezervoarjih

General Information

Status
Withdrawn
Publication Date
27-Aug-2002
Withdrawal Date
13-Mar-2012
Current Stage
9960 - Withdrawal effective - Withdrawal
Due Date
14-Mar-2012
Completion Date
14-Mar-2012

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Specifikacije za avtomatske kazalnike nivoja vsebine v rezervoarjihAnforderungen an automatische TankinhaltsmessgeräteSpécification de performance des dispositifs mesureurs automatiques de niveau de réservoirSpecification for the performance of automatic tank contents gauges43.060.40Sistemi za gorivoFuel systemsICS:Ta slovenski standard je istoveten z:EN 13352:2002SIST EN 13352:2003en01-december-2003SIST EN 13352:2003SLOVENSKI

STANDARD
SIST EN 13352:2003

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13352August 2002ICS 75.180.30English versionSpecification for the performance of automatic tank contentsgaugesSpécification de performance des jauges automatiques deniveau de réservoirAnforderungen an automatische TankinhaltsmessgeräteThis European Standard was approved by CEN on 29 May 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 13352:2002 ESIST EN 13352:2003

EN 13352:2002 (E)2ContentspageForeword......................................................................................................................................................................4Introduction.................................................................................................................................................................51Scope..............................................................................................................................................................52Normative references....................................................................................................................................63Terms and definitions....................................................................................................................................64General requirements....................................................................................................................................74.1Temperature ranges......................................................................................................................................74.2Variations in the properties of stored products.........................................................................................84.3Humidity..........................................................................................................................................................85Performance requirements...........................................................................................................................85.1Level measurement.......................................................................................................................................85.2Temperature measurement...........................................................................................................................85.3Water detection..............................................................................................................................................95.4Essential information..................................................................................................................................105.5Indicator device............................................................................................................................................105.6Manufacturers instructions.........................................................................................................................105.7Classification and designation...................................................................................................................116Test methods................................................................................................................................................126.1Sampling.......................................................................................................................................................126.2Test sequence..............................................................................................................................................126.3Test report....................................................................................................................................................127Marking and labelling..................................................................................................................................138Test for provision of essential information...............................................................................................138.1Test objective...............................................................................................................................................138.2Evaluation.....................................................................................................................................................138.3Test equipment............................................................................................................................................138.4Test method..................................................................................................................................................138.5Test result.....................................................................................................................................................139Test for level and temperature performance.............................................................................................149.1Test objective...............................................................................................................................................149.2Evaluation.....................................................................................................................................................149.3Test equipment............................................................................................................................................149.4Test method..................................................................................................................................................159.5Test results and analysis............................................................................................................................2510Test for water detection capability.............................................................................................................3410.1Test objective...............................................................................................................................................3410.2Evaluation.....................................................................................................................................................3510.3Test equipment............................................................................................................................................3510.4Test3510.5Test results...................................................................................................................................................36Annex A (informative)

Evaluation of conformity...................................................................................................37Annex B (informative)

Tank capacity tables..........................................................................................................39Annex C (informative)

Gauge installation..............................................................................................................41Annex D (informative)

Patent for automatic tank contents gauges....................................................................44SIST EN 13352:2003

EN 13352:2002 (E)3Annex E (informative)

A-deviations.........................................................................................................................45Bibliography..............................................................................................................................................................46SIST EN 13352:2003

EN 13352:2002 (E)4ForewordThis document EN 13352:2002 has been prepared by Technical Committee CEN/TC 221 "Shop fabricated metallictanks and equipment for storage tanks and for service stations", the secretariat of which is held by DIN.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 February 2003, and conflicting national standards shall be withdrawn at the latestby February 2003.Annexes A, B, C, D and E are informative.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, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.SIST EN 13352:2003

EN 13352:2002 (E)5IntroductionThe principal function of a tank gauge is to measure the level of liquid contained in a storage tank without the needto access the tank and take manual dip readings. The gauge measures liquid parameters, which can includeheight, mass, temperature, density and pressure. These are then used to determine the tank's contents. Othermethods of establishing tank contents, e.g. direct volume measurement, are not addressed in this standard.The increasing need for continuous inventory control for security, effective site operation and environmentalprotection has made the use of tank gauges a practical solution for any tank installation. In addition, in the case ofvolatile products, the advent of vapour emission control makes access to the tank for dipping purposes increasinglydifficult.Automatic tank gauging systems are devices which can interface with other measuring equipment and can becapable of providing one or more of the following functions:Basic gaugingWhere the gauge is used solely to confirm that there is available room to accept delivery of a quantity of productinto the tank or where the gauge is used solely to measure the liquid contents of the tank.Inventory controlWhere the tank contents information is used for stock accounting purposes. This can be transferred manually or,where the gauge forms part of an integrated system, automatically.Automatic reconciliationWhere the tank contents information is used together with measured additions to and depletions from the storagetanks contents in a defined time period to identify possible discrepancies.1 ScopeThis European Standard specifies the minimum performance requirements for various classes of automatic tankcontents gauges which are limited to static tanks of shop fabricated manufacture both metallic and non metallic,underground and above ground which do not exceed 100 000 l in capacity or 5 m in height.It is applicable to gauges for fuels (products) which are flammable, having a flash point up to but not exceeding100 °C, stored at premises (e.g. filling stations) at which fuel is dispensed for use in vehicles and other forms oftransportation. This European Standard applies to gauges suitable for use at ambient temperatures and subject tonormal operational pressure variations.Liquefied gases are not covered by this standard.This European Standard relates to the measurement of product level, measurement of product temperature anddetection of the presence of free water.The gauges covered by this standard are not intended for use in meeting legal metrology requirements.SIST EN 13352:2003

EN 13352:2002 (E)62 Normative referencesThis European Standard incorporates by dated or undated reference, 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 ISO/IEC 17025:2000, General requirements for the competence of testing and calibration laboratories (ISO/IEC17025:1999).CEC Legislative Fuels, Co-ordinating European Council (CEC) for the Development of Performance Tests forTransportation Fuels, Lubricants and Other Fuels.3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1automatic tank contents gauge (ATCG)device capable, as a minimum, of providing a measurement of the level of liquid contained in a storage tank withoutthe need for manual access into the tank3.2available roomproduct quantity which can safely be delivered into the tank without running the risk of exceeding the maximumsafe filling capacity3.3gauge sensordevice which measures one or more of product level, temperature and free water presence3.4gauging systemcombined system of gauge sensor(s) and associated indicator device(s)3.5indicator devicedevice which receives and displays the output signals from the gauge sensor(s). It may process that data anddisplay, print or transmit information as required3.6maximum permissible error (MPE)extreme values of an error permitted by specifications, regulations etc. for a given measuring instrument3.7measuring rangedistance between the upper and lower limits of measurement over which the performance requirements aresatisfied3.8readabilityproperty of a measuring instrument where the indicating device is constructed in such a way that its indication maybe read without ambiguitySIST EN 13352:2003

EN 13352:2002 (E)73.9reference level measurement device (RLMD)certified level measurement device used for verification of the ATCG's performance3.10reference temperature measurement device (RTMD)certified temperature measurement device used for verification of the ATCG's performance3.11repeatabilityability of a measuring instrument to provide closely similar indications for repeated applications of the samemeasurand under the same conditions of measurement (ISO-Publication)NOTE 1These conditions include:¾ reduction to a minimum of the variations due to the observer¾ the same measurement procedure¾ the same observer¾ the same measuring equipment, used under the same conditions¾ the same location¾ repetition over a short period of time.NOTE 2Repeatability can be expressed quantitatively in terms of the dispersion characteristics of the indications.3.12resolutionsmallest difference between indications of a displaying device that can be meaningfully distinguished (ISO-Publication)NOTE 1For a digital displaying device, this is the change in the indication when the least significant digit changes by onestep.NOTE 2This concept applies also to a recording device.4 General requirements4.1 Temperature rangesThe components of an automatic tank contents gauge shall be designed for operation under atmospheric condi-tions and rated subdivided into the temperature categories according to Table 1.Table 1 — Temperature categoryTemperature categoryTemperature rangeO-25 oC to +55 oCP-5 oC to +50 oCU-5 oC to +30 oCI+5 oC to +35 oCSIST EN 13352:2003

EN 13352:2002 (E)84.2 Variations in the properties of stored productsThe performance requirements for ATCGs according to 5.1 and 5.2 shall be satisfied when using one or more ofthe following test liquids:¾ Type 1 (Diesel equivalent): CEC Legislative Fuel no. RF-03-A-84¾ Type 2 (Petrol equivalent): CEC Legislative Fuel no. RF-08-A-85¾ Type 3 (M85 Petrol equivalent): 85 % methanol and 15 % CEC Legislative Fuel no. RF-08-A-85NOTEThe above test liquids are standard fuels having defined ranges of variations in their physical properties.4.3 HumidityFor all classes of gauging system, the performance shall be unaffected by humidity, i. e. the gauge sensors shalloperate in conditions of 95 % non-condensing humidity.5 Performance requirements5.1 Level measurementGauging systems shall be classified as one of three classes, A, B or C, satisfying the performance requirements forlevel measurement according to Table 2 over their entire measuring range:Table 2 — Level measurement performance requirementsClassMaximum permissible errorRepeatabilityA± 1 mm0,5 mmB± 2 mm1 mmC± 1 % of measuring range0,5 % of measuring rangeFor gauging systems intended for use in aboveground tanks, these requirements shall be for temperature categoryO according to 4.1 and in conditions of 95 % non-condensing humidity according to 4.3.For gauging systems intended for use in underground tanks, these requirements shall be for temperature categoryU according to 4.1 and in conditions of 95 % non-condensing humidity according to 4.3.The method of type testing for level measurement is given in clause 9.5.2 Temperature measurementWhere average product temperature measurement is provided, the performance requirements for temperaturemeasurement according to Table 3 shall be satisfied:SIST EN 13352:2003

EN 13352:2002 (E)9Table 3 — Temperature measurement performance requirementsClassMaximum permissible error (°C)A± 0,8B± 2,0CNot prescribedFor gauging systems intended for use in aboveground tanks, these requirements shall be for temperature categoryO according to 4.1.For gauging systems intended for use in underground tanks, these requirements shall be satisfied for temperaturecategory U according to 4.1.The method of type testing for temperature measurement is given in clause 9.5.3 Water detectionWhere water detection is provided, this facility shall:5.3.1detect a minimum free water level of 30 mm above the bottom of the tank5.3.2indicate the presence of free water within 1 min of the free water reaching the level specified in 5.3.1(response time)5.3.3cease to indicate the presence of free water within 5 min of the free water dropping below the levelspecified in 5.3.1 (recovery time)5.3.4activate an alarm within 1 min on detecting the presence of free water at a pre-set levelFor gauging systems intended for use in aboveground tanks, these requirements shall be satisfied for temperaturecategory O according to 4.1.For gauging systems intended for use in underground tanks, these requirements shall be satisfied for temperaturecategory U according to 4.1.The method of type testing for free water detection is given in clause 10.SIST EN 13352:2003

EN 13352:2002 (E)105.4 Essential informationThe information available for display, printing or transmission by the indicator device shall include:a) the identification of the tank (for multiple tank systems);b) product identification (for multiple tank systems);c) the level and/or volume of product in the tank and/or available room with an indicated resolution according toTable 4 below;d) the date and time of the reading (if printed);e) indication of water present (if water detection fitted);f) high water alarm (if water detection fitted);g) sensor disconnection indication;h) visual indication of power on.Table 4 — Required resolution for level and volume indicationClassLevel resolutionVolume resolutionA0,1 mm1 LitreB0,2 mm1 LitreC0,1 %0,1 %The correct provision of essential information shall be verified through the type approval test procedure describedin clause 8.NOTE 1With a multiple tank system, a single indicator device for the gauge sensors can be provided in which case it shouldbe capable of being switched between tanks or should switch automatically between tanks and should then indicate clearly towhich tank the information shown refers.NOTE 2To achieve accurate volume measurement, an accurate tank capacity table is required. Suggested methods forgenerating tank capacity tables are referenced in annex B (informative).5.5 Indicator deviceThe level and, where provided, temperature measurements shall be stable to within the corresponding MPE for theclass of measurement performance (A, B or C) over a range of environmental temperature for the indicator device.The manufacturer shall specify this range either as category O or category I, according to 4.1.5.6 Manufacturers instructionsInstructions shall be provided by the manufacturer for the safe installation, operation and maintenance of theautomatic tank gauging system.SIST EN 13352:2003

EN 13352:2002 (E)11NOTESee annex C (informative) for further information.5.7 Classification and designation5.7.1Gauge sensors shall be designated according to the following classifications as established by therelevant test methods:a) measurement performance (class A, B or C in accordance with Table 2 and Table 3);b) test liquids in which this class of performance is achieved (type 1, 2 and/or 3 according to 4.2);c) the temperature range over which this class of performance is achieved (category O, P or U according to

4.1);d) water detection performance (W represents compliance according to 5.3).These classifications shall be designated each by a single letter or numeral according to the following syntax:a)b)c)d){A}{[1] [2] [3]}{O}{B}{P}[W]{C}{U}Items bracketed { } are required. One option from each classification shall be given.Items bracketed [

] are optional.For example, a sensor achieving class of performance B, over the temperature range of category U, in test liquidstype 2 and type 3 and capable of water detection would be designated B23UW.These designations shall not be affixed other than to sensors within the range of smallest and largest tank sizes forwhich approval has been obtained.5.7.2Indicator devices (where separate from the sensor) shall be designated according to the followingclassifications as established by the relevant test methods:e) measurement performance (class A, B or C in accordance with Table 2 and Table 3)f) the temperature range over which this class of performance is achieved (category O or I according to 4.1)These classifications shall be designated each by a single letter according to the following syntax:e)f){A}{O}{B}{I}{C}Items bracketed { } are required. One option from each classification shall be given.SIST EN 13352:2003

EN 13352:2002 (E)12For example, an indicator unit achieving class of performance B, over the temperature range of category I would bedesignated BI.6 Test methods6.1 SamplingThe gauging system to be tested shall consist of one sample of the ATCG including gauge sensors which cover thesmallest and largest tank sizes for which they will obtain approval.6.2 Test sequencePrior to testing, the manufacturer shall state the class of measurement performance against which the gaugingsystem is to be assessed. For each gauge sensor contained in the gauging system to be tested, the manufacturershall also state the temperature category, the measuring range, the compatible types of test liquid and whetherwater detection is provided. For each indicator device (if separate from the gauge sensors) the manufacturer shallalso state the relevant temperature category.The test lot shall be the subject of three tests, the test parameter bands in each case being selected according tothe relevant ranges as stated by the manufacturer.These tests shall be conducted in the following order:- test for the provision of essential information, according to clause 8.- test for level and temperature measurement performance, according to clause 9.- test for water detection capability, according to clause 10.6.3 Test reportThe results of the three tests according to 6.2 shall be compiled into a test report in accordance with 5.10 ofEN ISO/IEC 17025:2000. This report shall include at least the following information:a) identification of the product and details of the maximum and minimum lengths of the sensors tested;b) date of manufacture of the product;c) dates for the beginning and end of each test;d) reference to this standard and the test methods used;e) any variants of any test method;f) the class of measurement performance assessed;g) types of test liquid used;h) temperature category applied to gauge sensor(s);i) temperature category applied to indicator device (if relevant);j) whether water detection capability was tested;k) results for each test stating "Pass" or listing failures by exception in each case.SIST EN 13352:2003

EN 13352:2002 (E)137 Marking and labellingEach gauge sensor and/or indicator device shall be clearly and indelibly marked by the manufacturer either directlyon the product or by an adhesive label with the following information:- manufacturer's name, trade mark or identification mark;- year of manufacture;- number of this European Standard, EN 13352;- if required, marking in accordance with Directive 94/9/EC;- designation as defined in 5.7.The essential characteristics, the recognition and observance of which will ensure that electrical equipment will beused safely and in the application for which it was made, shall be marked on the equipment or, if this is notpossible, on an accompanying notice.8 Test for provision of essential information8.1 Test objectiveTo prove the availability of the essential information as listed in 5.4. Availability shall be verified either by theinformation being displayed or printed on the indicator device or being transmitted to a remote indicator device,display or printer (dependent upon the system design).8.2 EvaluationWhen the equipment is operated in accordance with the manufacturer's instructions, each item of essentialinformation is available from either the indicator device or from the remote indicator device, display or printer towhich it is transmitted.Textual information shall be readable in the language selected to communicate the information. Similarly, any iconsor indications utilised shall be readable. Audible alarms are supplementary to the communication of the warning byvisual means.8.3 Test equipmentThe manufacturer shall supply a gauging system. Where the indicator device does not provide all of the essentialinformation, the manufacturer shall also supply additional devices as necessary to provide any missing items. For amultiple gauging system a minimum of two sensors shall be supplied.8.4 Test methodThe system shall be installed and commissioned in accordance with the manufacturer's instructions. Each item ofessential information shall be obtained from the indicator device or display or printer, either locally or remotely, inaccordance with the manufacturer's instructions. The high water alarm and sensor loss alarm shall be simulated bycreating the appropriate conditions.8.5 Test resultFrom the recorded results, it shall be verified that each item of essential information is available as listed in 5.4.SIST EN 13352:2003

EN 13352:2002 (E)149 Test for level and temperature performance9.1 Test objectiveThe aim of the type test is to classify the performance capabilities of the ATCG in product level and temperaturemeasurement in accordance with the performance requirements of one of the three classes specified in 5.1 and5.2. Tests shall be performed to determine:(i) the maximum permissible error in product level measurement;(ii) the repeatability of product level measurement;(iii) the maximum permissible error in temperature measurement.Tests shall be carried out over the rated temperature ranges of both gauge sensor and indicator device, to verifythat the rated class of performance is maintained across these ranges.9.2 EvaluationThe performance values produced by the ATCG under test shall be analysed and compared with the minimumperformance specifications for the three classes, A, B and C. The ATCG will have passed the test for a specificclass if each of its performance values are equal to or better than those specified for that class.Class A gauging systems shall meet the requirements of Tables 2 and 3.9.3 Test equipment9.3.1Test vesselA vessel suitable for mounting the ATCG, RTMD and RLMD mentioned below. The vessel shall consist of a verticalcylinder with a diameter of 0,75 m. The vessel shall be fitted with the following items:¾ a tank lid for mounting the ATCG with a pressure seal to the test vessel to withstand -3 kPa to +15 kPa;¾ a calibrated P-V valve, fitted to the tank lid, to operate below -1 kPa or above +5 kPa with a tolerance of± 20 %;¾ a mounting for the RLMD;NOTESpecial care should be taken with the mounting of the RLMD, as its mounting position should not change due toenvironmental temperature variations.¾ a drop tube for filling of the vessel and to reduce settling time. This drop tube will have a diameter of 50 mmand extend to within 80 mm from the vessel’s bottom;¾ a mounting for the RTMD;¾ an apparatus for heating and cooling the liquid in the test vessel;¾ an apparatus for the control of the temperature over the full height of the liquid in the test vessel;¾ an apparatus for maintaining 95 % relative humidity in the vapour space when the vessel

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