Specification for the performance of automatic tank contents gauges

This European Standard specifies the minimum performance requirements for various classes of automatic tank
gauges which are limited to static tanks of shop fabricated manufacture both metallic and non metallic,
underground and above ground which do not exceed 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 temperatures and subject to
normal operational pressure variations.
Gauging of liquefied gases are not covered by this standard.
This European Standard relates to the measurement of product level, measurement of product temperature and
detection of the presence of free water. The detection of free water may be compromised for Alcohol blended
fuels.
This standard are not intended to cover legal metrology requirements.

Anforderungen an automatische Tankinhaltsmessgeräte

Diese Europäische Norm legt Mindestanforderungen an unterschiedliche Klassen von automatischen Füll-standmessgeräten fest, die nur für den Einsatz in unter  und oberirdisch aufgestellten, ortsfesten, werks-gefertigten Tanks gelten, die aus metallischen und nichtmetallischen Werkstoffen bestehen und 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 Füllstand-messgeräte, die für den Einsatz bei Umgebungstemperaturen und normalen betriebsbedingten Druckverhält-nissen geeignet sind.
Die Füllstandmessung für Flüssiggase ist in dieser Norm nicht erfasst.
Die vorliegende Europäische Norm behandelt Messungen des Füllstands und der Temperatur des Produkts sowie die Anzeige des Vorhandenseins von abgesetztem Wasser. Die Anzeige für abgesetztes Wasser kann für Kraftstoffe, die Alkohol als Blendkomponente enthalten, möglicherweise beeinträchtigt sein.
In dieser Norm nicht erfasst werden Anforderungen des gesetzlichen Messwesens.

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 hauteur ne dépasse pas 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 de remplissage 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.
Le jaugeage des gaz liquéfiés n'est pas couvert 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. La détection de présence d'eau peut être compromise pour les mélanges de carburants et d’alcools.
La présente norme n'est pas destinée à être utilisées pour répondre aux exigences de la métrologie légale.

Zahteve za avtomatske merilnike nivoja vsebine v rezervoarjih

Ta evropski standard določa minimalne zahteve za delovanje različnih razredov avtomatskih merilnikov za rezervoarje, ki so omejeni na tovarniško izdelane nepremične rezervoarje, kovinske in nekovinske, podzemne in nadzemne, katerih višina ne presega 5 m.
Uporablja se za merilnike za goriva (izdelke), ki so vnetljiva, imajo plamenišče do 100 °C in se shranjujejo na mestih (npr. bencinskih servisih), na katerih se gorivo toči za uporabo v vozilih in drugih prevoznih sredstvih. Ta evropski standard se uporablja za merilnike, ki so primerni za uporabo pri temperaturi okolja in so izpostavljeni običajnim spremembam delovnega tlaka.
Ta standard ne zajema merjenja utekočinjenih plinov.
Ta evropski standard se uporablja za merjenje ravni izdelka, merjenje temperature izdelka in odkrivanje prisotnosti vode. Zaznavanje proste vode za goriva, mešana z alkoholom, morda ni natančno.
Ta standard ne zajema zahtev zakonskega meroslovja.

General Information

Status
Published
Public Enquiry End Date
19-Oct-2010
Publication Date
18-Apr-2012
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
23-Mar-2012
Due Date
28-May-2012
Completion Date
19-Apr-2012

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zahteve za avtomatske merilnike 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 13352:2012SIST EN 13352:2012en,fr,de01-maj-2012SIST EN 13352:2012SLOVENSKI
STANDARDSIST EN 13352:20031DGRPHãþD



SIST EN 13352:2012



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13352
March 2012 ICS 75.180.30 Supersedes EN 13352:2002English Version
Specification for the performance of automatic tank contents gauges
Spécification de performance des jauges automatiques de niveau de réservoir
Anforderungen an automatische TankfüllstandmessgeräteThis European Standard was approved by CEN on 28 January 2012.
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 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.
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 members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13352:2012: ESIST EN 13352:2012



EN 13352:2012 (E) 2 Contents Page Foreword .4Introduction .51 Scope .62 Normative references .63 Terms and definitions .64 General requirements .84.1 Temperature ranges .84.2 Variations in the properties of stored products .84.3 Humidity .84.4 Characteristics of the materials .95 Performance requirements .95.1 Level measurement .95.2 Temperature measurement .95.3 Water detection .95.4 Essential information . 105.5 Indicator device. 115.6 Manufacturers instructions . 115.7 Classification and designation . 116 Test methods . 126.1 Sampling . 126.2 Test sequence . 126.3 Test report . 127 Marking and labelling . 138 Test of provision of essential information . 138.1 Test objective . 138.2 Evaluation . 138.3 Test equipment . 138.4 Test method . 138.5 Test result . 149 Test for level and temperature performance . 149.1 Test objective . 149.2 Evaluation . 149.3 Test equipment . 149.3.1 Test vessel . 149.3.2 Secondary vessel. 149.3.3 Reference level measurement device (RLMD) . 149.3.4 Reference temperature measurement devices (RTMD) . 149.3.5 Monitoring devices . 149.3.6 ATG . 159.3.7 Environmental chamber . 159.3.8 Temperature stabilisation . 159.4 Test method . 159.4.1 Test schedule . 159.4.2 Preparation . 169.4.3 Trial run . 169.4.4 MPE test A for level . 169.4.5 MPE test B for level and temperature . 189.4.6 Repeatability test for level . 19SIST EN 13352:2012



EN 13352:2012 (E) 3 9.4.7 Test of the temperature category of the indicator device unit . 219.5 Test results and analysis . 229.5.1 General . 229.5.2 MPE test A for level . 229.5.3 MPE test B for temperature . 239.5.4 MPE test B for level . 249.5.5 Repeatability test for level . 249.5.6 Test of the temperature category of the liquid level measurement . 259.5.7 Classification of the ATG . 2710 Test for water detection capability . 2810.1 Test objective . 2810.2 Evaluation. 2810.3 Test equipment . 2810.4 Test . 2810.4.1 Preparation . 2810.4.2 Stabilisation . 2910.4.3 Test procedure . 2910.5 Test results . 3011 Environmental aspects . 30Annex A (informative)
Evaluation of conformity. 31A.1 General . 31A.2 Initial type testing . 31A.3 Factory production control. 31A.4 Continuous surveillance . 32Annex B (informative)
Gauge sensors installation . 33B.1 General . 33B.2 Reference datum points . 33B.3 Safety . 34B.4 Ingress protection . 35Annex C (informative)
A-deviations . 36Annex D (informative)
Environmental Aspects . 37Annex E (normative)
Compatibility with fuels . 39E.1 Compatibility tests for materials . 39E.2 Test for parts exposed to fuels vapours . 39E.3 Test for parts in direct contact with fuels . 39Bibliography . 41 SIST EN 13352:2012



EN 13352:2012 (E) 4 Foreword This document (EN 13352:2012) has been prepared by Technical Committee CEN/TC 393 “Equipment for storage tanks and for filling 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 or by endorsement, at the latest by September 2012, and conflicting national standards shall be withdrawn at the latest by September 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13352:2002. The main changes with respect to the previous edition are listed below:  test liquid changed;  requirement concerning the compatibility of the materials in contact with fuels (including ethanol blends and biodiesel) and/or their vapour added;  test equipment modified;  test procedures modified to reduce the number of tests without affect the overall performances; some procedures are performed in climatic chamber;  some notes about the performance of water indication added that may be affected if the fuel to monitor is an ethanol blend;  information concerning environmental aspects included. According to the CEN/CENELEC 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 13352:2012



EN 13352:2012 (E) 5 Introduction The principal function of a tank gauge is to measure the level of liquid contained in a storage tank without the need to access the tank and take manual dip readings. The gauge measures liquid parameters, which can include height, mass, temperature, density and pressure. These can then be used to determine the tank's content. Methods of establishing tank’s content, e.g. direct volume measurement, are not addressed in this standard. The increasing need for continuous inventory control for security, effective site operation and environmental protection has made the use of tank gauges a practical solution for any tank installation. In addition, in the case of volatile products, the advent of vapour emission control makes access to the tank for dipping purposes increasingly difficult. Automatic tank gauging systems are devices which can interface with other measuring equipment and can be capable of providing one or more of the following functions: Basic gauging Where the gauge is used solely to confirm that there is sufficient ullage to accept delivery of a quantity of product into the tank or where the gauge is used solely to measure the liquid contents of the tank. Inventory control Where 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 reconciliation Where the tank contents information is used together with measured additions to and depletions from the storage tanks contents in a defined time period to identify possible discrepancies. Automatic Calibration Where the tank level information in connection with refuel volume is used to calculate tank calibration data. SIST EN 13352:2012



EN 13352:2012 (E) 6 1 Scope This European Standard specifies the minimum performance requirements for various classes of automatic tank gauges which are limited to static tanks of shop fabricated manufacture both metallic and non metallic, underground and above ground which do not exceed 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. Gauging of liquefied gases are not covered by this standard. This European Standard relates to the measurement of product level, measurement of product temperature and detection of the presence of free water. The detection of free water may be compromised for Alcohol blended fuels. NOTE 1 This standard is not intended to cover safety functionalities (i.e. overfill prevention, leak detection, etc.). Further Standards apply. NOTE 2
This standard is not intended to cover legal metrology requirements. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 228, Automotive fuels — Unleaded petrol — Requirements and test methods EN 590:2009+A1:2010, Automotive fuels — Diesel — Requirements and test methods EN 14214, Automotive fuels — Fatty acid methyl esters (FAME) for diesel engines — Requirements and test methods EN 15376, Automotive fuels — Ethanol as a blending component for petrol — Requirements and test methods EN 60296, Fluids for electrotechnical applications — Unused mineral insulating oils for transformers and switchgear (IEC 60296) EN ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:2005) 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 automatic tank gauge (ATG) device capable, as a minimum, of providing a measurement of the level of liquid contained in a storage tank without the need for manual access into the tank 3.2 ullage product quantity which can safely be delivered into the tank without running the risk of exceeding the maximum safe filling capacity SIST EN 13352:2012



EN 13352:2012 (E) 7 3.3 gauge sensor device which measures one or more of product level, temperature and free water presence 3.4 gauging system combined system of gauge sensor(s) and associated indicator device(s) 3.5 indicator device device which receives and displays the output signals from the gauge sensor(s). It may process that data and display, print or transmit information as required 3.6 maximum permissible error (MPE) extreme values of an error permitted by specifications, regulations etc. for a given measuring instrument 3.7 measuring range (MR) distance between the upper and lower limits of measurement over which the performance requirements are satisfied 3.8 readability property of a measuring instrument where the indicating device is constructed in such a way that its indication may be read without ambiguity 3.9 reference level measurement device (RLMD) certified level measurement device used for verification of the ATG's performance 3.10 reference temperature measurement device (RTMD) certified temperature measurement device used for verification of the ATG's performance 3.11 repeatability ability of a measuring instrument to provide closely similar indications for repeated applications of the same measurand under the same conditions of measurement (ISO-Publication) Note 1 to entry: These conditions include:  reduction to a minimum of the variations due to the observer;  the same measurement procedure;  the same observer;  the same measuring equipment, used under the same conditions;  the same location;  repetition over a short period of time. Note 2 to entry: Repeatability can be expressed quantitatively in terms of the dispersion characteristics of the indications. SIST EN 13352:2012



EN 13352:2012 (E) 8 3.12 resolution smallest difference between indications of a displaying device that can be meaningfully distinguished (ISO-Publication) Note 1 to entry: For a digital displaying device, this is the change in the indication when the least significant digit changes by one step. Note 2 to entry: This concept applies also to a recording device. 3.13 consecutive readings reading taking from the indicator device at intervals of no less than 1 minute, in consideration of the refresh time of the measurement and display cycle 4 General requirements 4.1 Temperature ranges The components of an automatic tank gauge shall be designed for operation under atmospheric conditions and rated subdivided into the temperature categories according to Table 1. Table 1 — Temperature category Temperature category Temperature range O −25 °C to +55 °C P −5 °C to +45 °C U −5 °C to +30 °C I +5 °C to +40 °C
NOTE The temperature category are intended to cover Over-ground, Underground, Indoor and Protected environments. 4.2 Variations in the properties of stored products The performance requirements for ATGs according to 5.1 and 5.2 shall be satisfied when using one or more of the following test liquids:  Type 1 Diesel according to EN 590:2009+A1:2010;  Type 2 Transformer oil according to EN 60296. NOTE 1 The above test liquids have defined ranges of variations in their physical properties. NOTE 2 The above test liquids cover also the characteristics of gasoline and bio-fuels (including bio-diesel and ethanol-gasoline blends) for level and temperature measurements only. 4.3 Humidity For all classes of gauging system, the performance shall be unaffected by humidity, i.e. the gauge sensors shall operate in conditions of 95 % non-condensing humidity. SIST EN 13352:2012



EN 13352:2012 (E) 9 4.4 Characteristics of the materials All materials that may be in permanent contact with fuels or their vapours during the normal use of the probe shall comply with the requirements of Annex E for all fuels as appropriate. The tests shall be performed only for fuels foreseen by the manufacturer for that type of probe. NOTE The type of fuels for which the probe is intended to be used may be determined by the literature accomplishing the probe or by a manufacturer statement. In absence of such information, tests are performed for each test fluid. 5 Performance requirements 5.1 Level measurement Gauging systems shall be classified as one of three classes, A, B or C, satisfying the performance requirements for level measurement according to Table 2 over their entire measuring range and operating temperature range. Table 2 — Level measurement performance requirements Class Maximum permissible error (MPE) RepeatabilityA ± 1 mm 0,5 mm B ± 2 mm 1 mm C ± 1 % of measuring range 0,5 % of measuring range
The method of type testing for level measurement is given in Clause 9. 5.2 Temperature measurement Where average product temperature measurement is provided, the performance requirements for temperature measurement according to Table 3 shall be satisfied. Table 3 — Temperature measurement performance requirements Class
Maximum permissible error
° C A ± 1,0 B ± 2,0 C Not prescribed
The method of type testing for temperature measurement is given in Clause 9. 5.3 Water detection Where water detection is provided, this facility shall: 5.3.1 Detect a minimum free water level of 30 mm when the probe has been installed on the bottom of the tank. SIST EN 13352:2012



EN 13352:2012 (E) 10 5.3.2 Indicate the presence of free water within 1 min of the free water reaching the level specified in 5.3.1 (response time). 5.3.3 Cease to indicate the presence of free water within 5 min of the free water dropping below the level specified in 5.3.1 (recovery time). 5.3.4 Activate an alarm within 1 min on detecting the presence of free water at a pre-set level. NOTE To prevent false alarms during deliveries it is permitted to disable water detection. The method of type testing for free water detection is given in Clause 10. 5.4 Essential information The 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 an indication of the volume of product in the tank and/or ullage with an indicated resolution according to Table 4; 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 measurement and volume indication Class Level measurement resolutionVolume indication resolution A 0,1 mm 1 l B 0,2 mm 1 l C 0,1 % 0,1 %
The correct provision of essential information shall be verified through the type approval test procedure described in Clause 8. NOTE 1 With a multiple tank system, a single indicator device for the gauge sensors can be provided in which case it should be capable of being switched between tanks or should switch automatically between tanks and should then indicate clearly to which tank the information shown refers. NOTE 2 To achieve accurate volume measurement, an accurate tank capacity table is required. Suggested methods for generating tank capacity tables are referenced in Annex B (informative). SIST EN 13352:2012



EN 13352:2012 (E) 11 5.5 Indicator device The display of information shall be stable to within the corresponding MPE for the class 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 instructions Instructions shall be provided by the manufacturer for the safe installation, accurate positioning of the gauge sensor, operation and maintenance of the automatic tank gauging system. NOTE See Annex B (informative) for further information. 5.7 Classification and designation 5.7.1 Gauge sensors shall be designated according to the following classifications as established by the relevant test methods: a) Class of measurement performance (class A, B or C in accordance with Table 2 and Table 3); b) the temperature range over which this class of performance is achieved (category O, P or U according to 4.1); c) 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) {A}
{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 and capable of water detection would be designated BUW. These designations shall not be affixed other
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