SIST EN 16479:2014
(Main)Water quality - Performance requirements and conformity test procedures for water monitoring equipment - Part 1: Automated sampling devices (samplers) for water and waste water
Water quality - Performance requirements and conformity test procedures for water monitoring equipment - Part 1: Automated sampling devices (samplers) for water and waste water
EN 16479 defines general requirements, performance requirements and conformity test procedures for automated sampling devices (samplers) for water and waste water that: - sample water and waste water from non-pressurized (i. e. open to atmosphere) channels or vessels; - sample over extended periods to collect discrete or composite samples based on time, event or flow proportional sampling. Specific sample integrity requirements are defined for samplers to be used for the collection of samples of final effluent or influent for the purpose of monitoring the performance of waste water treatment works, as required under the Urban Waste Water Treatment Directive (UWWTD). Samplers to be used for other industrial applications do not have to be assessed against these specific sample integrity requirements. This European Standard does not cover the installation and on-going use of samplers.
Wasserbeschaffenheit - Leistungsanforderungen und Konformitätsprüfungen für Geräte zum Wassermonitoring - Teil 1: Automatische Probenahmegeräte für Wasser und Abwasser
Dieser Teil von prEN 16479 legt allgemeine Anforderungen, Leistungsanforderungen und Verfahrensweisen für die Konformitätsprüfung von automatischen Probenahmegeräten für Wasser und Abwasser fest, die
- für die Probenahme von Wasser und Abwasser aus drucklosen (d. h. nach oben geöffnet) Gerinnen oder Becken bestimmt sind,
- für die Probenahme über einen längeren Zeitraum zum Sammeln von Einzelproben oder Mischproben beruhend auf der zeit- oder durchflussproportionalen Probenahme bestimmt sind,
- dauerhaft oder zeitlich begrenzt aufgestellt werden.
Spezifische Abwandlungen der Leistungsanforderungen für Probenahmegeräte sind im Anhang C aufgelistet, die zum Sammeln von Proben an der Ablauf oder der Zulaufstelle verwendet werden, um die Leistung von Abwasserbehandlungsarbeiten zu überwachen, wie in der Kommunalen Abwasserrichtlinie (91/271/EWG) gefordert.
Probenahmegeräte, die für andere Zwecke verwendet werden, müssen nicht im Hinblick auf die in Anhang C aufgelisteten Abwandlungen der Leistungsanforderungen beurteilt werden.
Qualité de l'eau - Exigences de performance et modes opératoires d'essai de conformité pour les équipements de surveillance de l'eau - Partie 1: Dispositifs d'échantillonnage automatiques (échantillonneurs) pour l'eau et les eaux usées
La présente partie de l'EN (WI00230287) définit les exigences générales, les exigences de performance et les modes opératoires d'essai de conformité destinés aux dispositifs d'échantillonnage automatiques (échantillonneurs) pour l'eau et les eaux usées qui :
- échantillonnent l'eau et les eaux usées à partir de canaux ou de récipients non pressurisés (c'est-à-dire ouverts à l'atmosphère) ;
- effectuent des échantillonnages sur des périodes prolongées afin de prélever des échantillons discrets ou composites basés sur l'échantillonnage proportionnel au temps ou au débit ;
- sont destinés à être installés de façon permanente ou temporaire.
Les conditions spécifiques des exigences de performance sont indiquées à l'Annexe C pour les échantillonneurs à utiliser pour prélever des échantillons d'effluent ou d'affluent final en vue de surveiller les performances des installations de traitement des eaux résiduaires, comme requis dans le cadre de la Directive relative au traitement des eaux résiduaires urbaines (Directive ERU).
Les échantillonneurs destinés à être utilisés pour d'autres applications n’ont pas besoin d’être évalués par rapport aux conditions spécifiques des exigences de performance indiquées à l'Annexe C.
Kakovost vode - Zahteve za zmogljivost in postopki preskušanja skladnosti opreme za monitoring vode - 1. del: Avtomatski vzorčevalniki za vodo in odpadno vodo
Standard EN 16479 določa splošne zahteve, zahteve za zmogljivost in postopke skladnosti za avtomatske vzorčevalnike za vodo in odpadno vodo, ki: - zbirajo vodo in odpadno vodo iz kanalov ali vsebnikov, ki niso pod tlakom (tj. so v stiku z atmosfero); - zbirajo v daljšem časovnem obdobju, da se zberejo ločeni ali sestavljeni vzorci, ki temeljijo na vzorčenju po času, dogodku ali sorazmernosti s pretokom. Za vzorčevalnike, ki se uporabljajo za zbiranje vzorcev končnega odtoka ali vtoka za spremljanje delovanja čistilnih naprav za odpadno vodo, so določene zahteve glede stabilnosti vzorcev, kot zahteva Direktiva o čiščenju komunalne odpadne vode. Vzorčevalnikov, ki se uporabljajo za druge industrijske namene, ni treba oceniti s temi določenimi zahtevami glede stabilnosti vzorcev. Ta evropski standard ne obravnava namestitve in stalne uporabe vzorčevalnikov.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Wasserbeschaffenheit - Leistungsanforderungen und Konformitätsprüfungen für Geräte zum Wassermonitoring - Teil 1: Automatische Probenahmegeräte für Wasser und AbwasserQualité de l'eau - Exigences de performance et modes opératoires d'essai de conformité pour les équipements de surveillance de l'eau - Partie 1: Dispositifs d'échantillonnage automatiques (échantillonneurs) pour l'eau et les eaux uséesWater quality - Performance requirements and conformity test procedures for water monitoring equipment - Part 1: Automated sampling devices (samplers) for water and waste water13.060.45Preiskava vode na splošnoExamination of water in generalICS:Ta slovenski standard je istoveten z:EN 16479:2014SIST EN 16479:2014en,fr,de01-september-2014SIST EN 16479:2014SLOVENSKI
STANDARD
SIST EN 16479:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16479
July 2014 ICS 13.060.45 English Version
Water quality - Performance requirements and conformity test procedures for water monitoring equipment - Automated sampling devices (samplers) for water and waste water
Qualité de l'eau - Exigences de performance et modes opératoires d'essai de conformité pour les équipements de surveillance de l'eau - Dispositifs d'échantillonnage automatiques (échantillonneurs) pour l'eau et les eaux usées
Wasserbeschaffenheit - Leistungsanforderungen und Konformitätsprüfungen für Geräte zum Wassermonitoring - Automatische Probenahmegeräte für Wasser und Abwasser This European Standard was approved by CEN on 22 May 2014.
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, Former Yugoslav Republic of Macedonia, 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
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16479:2014 ESIST EN 16479:2014
EN 16479:2014 (E) 2 Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative References . 5 3 Terms and definitions . 5 4 General requirements for samplers . 7 5 Performance requirements . 9 5.1 Sample volume . 9 5.2 Sampling principles . 9 5.3 Sample line velocity . 10 5.4 Power supply . 10 5.5 Sample integrity . 10 5.6 Sample timing error . 10 5.7 Effect of ambient air temperature . 10 6 Conformity testing . 11 6.1 General requirements . 11 6.2 Test conditions . 11 6.3 Verification by inspection . 12 6.4 Performance tests . 12 Annex A (normative)
Evaluation of conformity test data . 19 A.1 Sample volume error . 19 A.2 Sample line velocity . 21 A.3 Sample integrity . 21 A.3.1 Calculation of results based on the analysis of variance . 21 A.3.2 Notation . 21 A.3.3 Calculations . 22 A.3.4 Interpretation of the results . 23 A.4 Sampler timing error . 25 A.5 Ambient air temperature effects . 25 Annex B (informative)
Example procedure for demonstrating sample integrity for samplers to be used for Urban Waste Water Treatment Directive (UWWTD) sampling . 27 B.1 General . 27 B.2 Test fluid . 27 B.3 Sample collection . 27 B.4 Sample volume . 28 B.5 Sample integrity . 28 B.6 Determination of conformance . 28 Annex C (informative)
Example format for the report . 29 Bibliography . 31
SIST EN 16479:2014
EN 16479:2014 (E) 3 Foreword This document (EN 16479:2014) has been prepared by Technical Committee CEN/TC 230 “Water analysis”, 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 January 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. 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 was submitted to the Formal Vote with the reference FprEN 16479-1.
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, Former Yugoslav Republic of Macedonia, 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 16479:2014
EN 16479:2014 (E) 4 Introduction This European Standard is a product standard for automated sampling devices (samplers) for water and waste water. It defines general requirements, performance requirements, and procedures for the conformity testing of samplers. Samplers that are shown, by means of the tests, to conform with the specified requirements are considered to be fit for purpose. However, this European Standard does not cover the installation and on-going use of samplers. The requirements of this European Standard are intended to be independent of measurement technology and applicable to all automated sampling devices. Water monitoring equipment is widely used for compliance monitoring purposes under national and European regulations. This European standard supports the requirements of the following EU Directives: — Industrial Emissions Directive (2010/75/EU) [6]. — Urban Waste Water Treatment Directive (UWWTD) (91/271/EEC and 98/15/EEC) [7]. — Water Framework Directive (2000/60/EC) [8]. — Marine Strategy Framework Directive (2008/56/EC) [9]. SIST EN 16479:2014
EN 16479:2014 (E) 5 1 Scope This European Standard defines general requirements, performance requirements and conformity test procedures for automated sampling devices (samplers) for water and waste water that: — sample water and waste water from non-pressurized (i. e. open to atmosphere) channels or vessels; — sample over extended periods to collect discrete or composite samples based on time, event or flow proportional sampling. Specific sample integrity requirements are defined for samplers to be used for the collection of samples of final effluent or influent for the purpose of monitoring the performance of waste water treatment works, as required under the Urban Waste Water Treatment Directive (UWWTD). Samplers to be used for other industrial applications do not have to be assessed against these specific sample integrity requirements. This European Standard does not cover the installation and on-going use of samplers. 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 ISO 5667-3:2012, Water quality - Sampling - Part 3: Preservation and handling of water samples (ISO 5667-3:2012) EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 automated sampling device for water and waste water automated sampler equipment for collecting and storing samples of water or waste water for subsequent analysis 3.2 bias estimate of a systematic measurement error Note 1 to entry: The systematic measurement error is a component of measurement error that in replicate measurements remains constant or varies in a predictable manner. [SOURCE: ISO/IEC Guide 99:2007, 2.18, modified — Note 1 to entry has been added.] 3.3 composite sample two or more samples or sub-samples, mixed together in appropriate known proportions (either discretely or continuously), from which the average result of a desired requirement may be obtained Note 1 to entry: The proportions are usually based on time or flow measurements. [SOURCE: ISO 6107-2:2006/AMD, 1:2012, 29] SIST EN 16479:2014
EN 16479:2014 (E) 6 3.4 constant volume variable time sampling C.V.V.T flow proportional sampling based on collecting equal volumes of sample at frequencies proportional to flow 3.5 constant time variable volume sampling C.T.V.V flow proportional sampling based on collecting samples at fixed time intervals but where the volume of sample is varied in proportion to the flow 3.6 constant time constant volume sampling C.T.C.V equal volumes of sample or sub-sample collected at equal increments of time 3.7 determinand property/substance that is required to be measured and to be reflected by/present in a calibration solution [SOURCE: EN ISO 15839:2006, 3.13] 3.8 discrete sample single sample taken from a body of water [SOURCE: ISO 6107-2:2006, 40, modified – “process, whereby” deleted] 3.9 measurement error error of measurement error measured quantity value minus a reference quantity value Note 1 to entry: The concept of “measurement error” can be used both: a) when there is a single reference quantity value to refer to, which occurs if a calibration is made by means of a measurement standard with a measured quantity value having a negligible measurement uncertainty or if a conventional quantity value is given, in which case the measurement error is known, and b) if a measurand is supposed to be represented by a unique true quantity value or a set of true quantity values of negligible range, in which case the measurement error is not known. Note 2 to entry: Measurement error is not be confused with production error or mistake. [SOURCE: ISO/IEC Guide 99:2007, 2.16] 3.10 rated operating conditions minimum to maximum values of any environmental, fluid or electrical parameter within which the sampler is designed to operate without adjustment and with errors within performance limits 3.11 lift height vertical distance between the surface of the fluid being sampled and the highest point to which the sample is lifted Note 1 to entry: Sometimes called “sampling head” or “suction height”. SIST EN 16479:2014
EN 16479:2014 (E) 7 Note 2 to entry: The maximum lift height for samplers using vacuum pumps (e.g. pneumatic samplers and peristaltic samplers) is set to an atmospheric pressure of 1 000 mbar. At low atmospheric pressure the maximum lift height will be consequentially lower. 3.12 precision closeness of agreement between indications or measured quantity values obtained by replicate measurements on the same or similar objects under specified conditions Note 1 to entry: Measurement precision is usually expressed numerically by measures of imprecision, such as standard deviation, variance, or coefficient of variation under specified conditions of measurement. Note 2 to entry: The “specified conditions” can be, for example, repeatability conditions of measurement, intermediate precision conditions of measurement, or reproducibility conditions of measurement (see ISO 5725-3:1994). Note 3 to entry: Measurement precision is used to define measurement repeatability, intermediate measurement precision, and measurement reproducibility. Note 4 to entry: Sometimes “measurement precision” is erroneously used to mean measurement accuracy. [SOURCE: ISO/IEC Guide 99:2007, 2.15] 3.13 sampling interval time between successive sampling events 3.14 sampling line conduit from intake point to inlet of dosing system [SOURCE: ISO 6107-2:2006/AMD, 1:2012, 115, modified – “sampling probe” was replaced by “intake point” and delivery point was replaced by “inlet of dosing system”] 4 General requirements for samplers See 6.3 for details on verification by inspection. A sampler shall: a) have an unique designation that unambiguously identifies it (e.g. model, serial number); b) be designed (including its operating methodology) and constructed to ensure that the composition of the sample is, as far as is practicable, not altered by the sampling procedure; It can be impracticable to prevent the loss of volatile substances during sampling with vacuum and peristaltic samplers. c) have a rated maximum lift height at which all of the performance requirements of this standard are fulfilled. The rated maximum lift height shall be inscribed on the sampler or declared in the operating manual published by the manufacturer; Conformity testing of the sampler shall be based on a range of lift heights up to and including the sampler’s rated maximum lift height. d) have provision for the user to set the volume of a discrete sample;
e) have rated minimum and maximum sample volumes of a discrete sample inscribed on the sampler or declared in the operating manual published by the manufacturer; SIST EN 16479:2014
EN 16479:2014 (E) 8 Unless otherwise stated conformity testing of the sampler shall be based on a sample volume of 250 ml or the rated maximum sample volume, if smaller. f) have the stated capacities, for any integrated sample storage, both by number(s) and volume(s) of individual bottles and of a composite container, inscribed on the sampler or declared in the operating manual published by the manufacturer; g) be capable of collecting a series of samples, on a timed, event and/or a flow proportional basis. Samples can be collected and stored in individual bottles or a single composite sample bottle; h) have its possible sampling intervals inscribed on the sampler or declared in the operating manual published by the manufacturer; i) have provision for the user to set the sample interval as a minimum in the range 5 min to 1 h with increments of 1 min, for time proportional samplers; j) have provision for the sample interval (in the case of C.V.V.T. sampling) or the sample volume (in the case of C.T.V.V. sampling) to be set on the basis of a flow signal (e.g. pulse or analogue) from a flow meter. For pulse inputs, the relationship between pulse input and sample interval or volume should be adjustable as a minimum over the range 1 pulse to 999 pulses in increments of 1 pulse; k) have a control unit capable of recording sample collection failures; l) have a control unit capable of recording any low battery alarm during sample collection; m) be designed to minimise the possibility of clogging of the sample line by suspended solids in the waste water. The nominal internal diameter of the sample line shall be not less than 9 mm and the average sample line velocity shall not be less than 0,5 m/s. The sampler shall be capable of achieving this average sample line velocity at all lift heights up to and including its maximum rated lift height. These requirements on sample line diameter exclude pipe restriction caused by the normal operation of pinch valves and peristaltic pumps. National legal requirements can specify different minimum values for internal sample line diameter and average sample line velocity. These may need to be taken into account. n) be capable of purging the contents of the sampling line between each sampling event; o) have stated ingress protection (IP) rating inscribed on the sampler or stated in the operating manual. Requirements for ingress protection are detailed in EN 60529:1991 [1] The possible sampling options are illustrated in Figure 1. SIST EN 16479:2014
EN 16479:2014 (E) 9
Key Q discharge t time a) Flow rate curve b) C.T.C.V. Time proportional sampling c) C.V.V.T. Flow proportional sampling d) C.T.V.V. Flow proportional sampling Figure 1 — Sampling options 5 Performance requirements 5.1 Sample volume See conformity test in 6.4.1.1 and 6.4.1.2. The bias of the sample volume and precision at the 95 % confidence limit shall each not be greater than 5 % of the set volume over the tested range for lift height. NOTE Details of how to calculate bias and precision and worked example calculations are given in A.1. 5.2 Sampling principles See conformity tests in 6.4.2.2, 6.4.2.3, 6.4.2.4 and 6.4.2.5. The performance of the sampling principle shall be tested and the results reported. The timing error for each operating principle shall not be greater than 1 %. SIST EN 16479:2014
EN 16479:2014 (E) 10 5.3 Sample line velocity See conformity test in 6.4.3. The average velocity of the sample as it passes through the sample line during the sampling event shall not be less than 0,5 m/s at each tested lift height and at the rated voltage for the power supply. NOTE 1 A worked example calculation of sample line velocity is given in A.2. NOTE 2 National legal requirements can specify different minimum values for internal sample line diameter and average sample line velocity and these may need to be taken into account. 5.4 Power supply See conformity test in 6.4.4. The average velocity of the sample as it passes through the sample line during the sampling event shall not be less than 0,5 m/s between the minimum and maximum rated voltages for the power supply. NOTE A worked example calculation of sample line velocity is given in A.2. 5.5 Sample integrity See conformity test in 6.4.5 and the example procedure at Annex B. Analyses for BOD (biochemical oxygen demand), COD (chemical oxygen demand), total nitrogen, and total phosphorus in samples taken by the sampler and in samples taken manually from a test fluid in accordance with the conformity test detailed in 6.4.5 shall show no significant statistical difference based on an analysis of variance. NOTE Details of how to calculate sample integrity using analysis of variance and a worked example calculation are given in A.3. The design of a sample integrity test for other applications shall be based on EN ISO 5667-3 which describes the precautions to be taken to preserve and transport water samples. The same pass criteria should be applied when using a test fluid for an application other than the UWWTD and for which relevant determinands have been identified. 5.6 Sample timing error See conformity test in 6.4.6. The error of the sampler interval timing mechanism shall be no greater than ± 10 s per 24 h. NOTE A worked example calculation of sample timing error is given in A.4. 5.7 Effect of ambient air temperature 5.7.1 Samplers not incorporating sample temperature control See conformity tests in 6.4.7. Samplers which do not incorporate a means for maintaining the temperature of the sample within pre-set limits shall conform to the sample volume error requirements in 5.1 when operated within one of the following sets of rated operating conditions with regards to ambient temperature: a) from +5 °C to +40 °C; or SIST EN 16479:2014
EN 16479:2014 (E) 11 b) from −10 °C to +40 °C. Temperature range a) should be used for samplers designed without integral frost protection and for use only indoors where the building provides protection from frost. Temperature range b) should be used for samplers designed for use outdoors and which have integral frost protection. NOTE Details of how to calculate bias and precision and worked example calculations are given in A.1. 5.7.2 Samplers incorporating sample temperature control See conformity tests in 6.4.7. Samplers which incorporate a means for maintaining the temperature of the sample within pre-set limits shall conform to the sample volume error requirements in 5.1 when operated within an ambient temperature range from −10 °C to +40 °C. The mean temperature of the sample shall be maintained within the range from 0 °C to +5 °C during the sampling period, when the sampler is operated within the rated operating conditions for ambient temperature and process fluid temperature. The design of the sample temperature control shall ensure that ice does not form in the sample. In the case of mains powered samplers, after completion of the sampling period, the sample temperature shall remain within the range from 0 °C to +5 °C for a minimum period of 24 h. The design of the sample temperature control shall ensure that ice does not form in the sample. In the case of portable samplers which are not powered directly from a mains electricity supply, the minimum period of time, from the end of the sampling period, over which the temperature of the sample remains within the range from 0 °C to +5 °C with no formation of ice shall be 12 h. NOTE Details of how to calculate bias and precision and worked example calculations are given in A.1. 6 Conformity testing 6.1 General requirements The sampler shall be installed in accordance with any instructions provided by the manufacturer. Each performance requirement for the sampler shall be considered on its own when performing the conformity tests. Conformity testing of the sampler shall be carried out in accordance with the requirements of EN ISO/IEC 17025 or other equivalent standards accepted at international level. Sampler conformance shall be determined by processing the data from the tests in accordance with the calculation methods summarised in Annex A. Results from the conformity testing should be reported using the proposed format for the report given in Annex C. 6.2 Test conditions The sample line shall be arranged so that no part of the test fluid is retained within the sample line. Prior to carrying out any series of consecutive tests, the sampler shall be operated, for a total operating period of 2 000 sampling cycles, under the following conditions: — the rated maximum lift height; SIST EN 16479:2014
EN 16479:2014 (E) 12 — sampling interval 5 min; — sample volume 250 ml, (or the stated maximum volume if less than 250 ml); — samples shall be discarded. During tests that require the sampler to collect a sample of fluid, the vessel containing the fluid to be sampled shall be open to the atmosphere. In the case of a battery powered sampler, the battery shall be fully charged at the start of each conformity test unless stated otherwise in the test conditions. The sampler should be maintained, cleaned or recalibrated in accordance with the manufacturer's instructions prior to any test, but adjustments shall not be carried out during the course of the test. Table 1 gives the reference conditions for possible influence quantities. The sampler shall be tested with all influence quantities at their reference values, including tolerances, unless where specifically varied in any one test. Table 1 — Test reference conditions Influence quantity Reference value Tolerance Ambient temperature 20 °C ±2,5 °C Ambient humidity at 20 °C < 60 %
— Sample temperature 20 °C ±2,5 °C Supply voltage (AC) 230 Va (or 110 V) ±6 % a Supply voltage (DC) Rated voltage Rated voltage a see EN 60038:2011 [2] 6.3 Verification by inspection The sampler shall be set up, calibrated and adjusted in accordance with the manufacturer’s instructions. The sampler (or statements in the manufacturer’s operating manual) shall be inspected to verify conformance to the general requirements listed in Clause 4, as appropriate to the sampler under test. The means by which each requirement is fulfilled shall be reported. 6.4 Performance tests 6.4.1 Sample volume 6.4.1.1 C.T.C.V. Time proportional sampling principle Determine the sample volume errors in accordance with the following procedure. 1) Set the sampler to operate on time proportional sampling. 2) Programme the sampler to collect 24 samples with a fixed 10-min-interval and a sample volume of 250 ml (or the maximum sample volume if less than 250 ml). 3) Operate the programme at a lift height of 1 m. 4) Measure and record the volume of each sample. SIST EN 16479:2014
EN 16479:2014 (E) 13 5) Repeat the sampling programme at the rated maximum lift height and at half the rated maximum lift height. In each case, measure and record the volume of each sample. 6) Calculate and report in accordance with A.1. This test may be combined with 6.4.2.2 by recording the time at which the first six samples are taken. 6.4.1.2 C.T.V.V. flow proportional sampling principle Determine the sample volume errors in accordance with the following procedure. For samplers capable of operating with different input signals (analogue, pulse, digital) each input should be tested separately. 1) Programme the sampler for the collection of C.T.V.V. flow proportional samples at a rate of 4 samples per hour and a sample volume of 25 ml/ m3. If possible programme the input to range such that 100 % equals 100 m3/h. 2) Operate the sampler at a lift height of 1 m. 3) Apply a simulated flow signal representing 25 % of the maximum input signal until 6 individual samples have been collected
...
SLOVENSKI STANDARD
oSIST prEN 16479-1:2012
01-december-2012
[Not translated]
Water quality - Performance requirements and conformity test procedures for water
monitoring equipment - Part 1: Automated sampling devices (samplers) for water and
waste water
Wasserbeschaffenheit - Leistungsanforderungen und Konformitätsprüfungen für Geräte
zum Wassermonitoring - Teil 1: Automatische Probenahmegeräte für Wasser und
Abwasser
Qualité de l'eau - Exigences de performance et modes opératoires d'essai de conformité
pour les équipements de surveillance de l'eau - Partie 1: Dispositifs d'échantillonnage
automatiques (échantillonneurs) pour l'eau et les eaux usées
Ta slovenski standard je istoveten z: prEN 16479-1
ICS:
13.060.45 Preiskava vode na splošno Examination of water in
general
oSIST prEN 16479-1:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN 16479-1:2012
---------------------- Page: 2 ----------------------
oSIST prEN 16479-1:2012
EUROPEAN STANDARD
DRAFT
prEN 16479-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2012
ICS 13.060.45
English Version
Water quality - Performance requirements and conformity test
procedures for water monitoring equipment - Part 1: Automated
sampling devices (samplers) for water and waste water
Qualité de l'eau - Exigences de performance et modes Wasserbeschaffenheit - Leistungsanforderungen und
opératoires d'essai de conformité pour les équipements de
Konformitätsprüfungen für Geräte zum Wassermonitoring -
surveillance de l'eau - Partie 1: Dispositifs Teil 1: Automatische Probenahmegeräte für Wasser und
d'échantillonnage automatiques (échantillonneurs) pour Abwasser
l'eau et les eaux usées
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 230.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, Former Yugoslav Republic of Macedonia, 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
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 Ref. No. prEN 16479-1:2012: E
worldwide for CEN national Members.
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Contents Page
Foreword .3
Introduction .3
1 Scope .4
2 Terms and definitions .4
3 General requirements .5
4 Performance requirements .7
4.1 Sample volume .7
4.2 Sample line velocity .7
4.3 Power supply .7
4.4 Sample integrity .7
4.5 Sample timing error .8
4.6 Effect of ambient temperature .8
5 Conformity testing .8
5.1 General requirements .8
5.2 Test conditions .8
5.3 Initial checks .9
5.4 Performance tests.9
Annex A (informative) Example of a third party certification scheme for the product certification of
water monitoring equipment . 16
A.1 Introduction . 16
A.2 Conformity testing . 16
A.3 Initial audit of the WME manufacturer's quality management system . 17
A.4 Deciding on certification . 17
A.5 Licensing . 17
A.6 Surveillance . 17
A.7 Review of certifications . 18
A.8 Mutual recognition . 18
Annex B (normative) Determination of performance requirements . 20
B.1 Sample volume error . 20
B.2 Sample line velocity . 22
Method given in 5.4.2. 22
B.3 Sample integrity . 22
B.4 Sampler timing error . 25
B.5 Ambient temperature effects . 26
Annex C (normative) Requirements for samplers to be used for Urban Waste Water Treatment
Directive (UWWTD) sampling . 27
C.1 General . 27
C.2 Sample collection (see Clause 3) . 27
C.3 Sample volume (see 4.1) . 27
C.4 Sample integrity (see 4.3) . 27
C.5 Ambient temperature (see 4.5) . 28
Annex D (informative) Format for the report . 29
Bibliography . 32
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Foreword
This document (prEN 16479-1:2012) has been prepared by Technical Committee CEN/TC 230 “Water
analysis”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
Introduction
This part of prEN 16479-1 defines the general requirements, performance requirements, and procedures for
the conformity testing of automated sampling devices (samplers) for water and waste water. Part 2 covers
on-line analysers and Part 3 covers portable analysers.
The requirements of this part of prEN 16479-1 are intended to be technology transparent so that it can be
applied to any type of sampler.
This part of prEN 16479-1 is applicable to any organization that wishes to demonstrate that a sampler
conforms to the specified general requirements and performance requirements by means of the defined
conformity testing. The conformity testing may be carried out by:
a manufacturer or supplier – the first party, for the purposes of self-declaration of conformity;
user or purchaser - the second party, generally for the purposes of commercial acceptance;
an independent body – the third party, for the purpose of product certification.
Water monitoring equipment is widely used for compliance monitoring purposes under national and European
regulations. This part of prEN 16479-1 supports the requirements of the following EU Directives:
Industrial Emissions Directive (2010/75/EU) [1].
Urban Waste Water Treatment Directive (UWWTD) (91/271/EEC and 98/15/EEC) [2].
Water Framework Directive (2000/60/EC) [3].
Marine Strategy Framework Directive (2008/56/EC) [4].
ISO/IEC Guide 67 [5] provides guidance on product certification. It defines product certification as “a means
by which a third party provides assurance that a product complies with specified standards and other
normative documents” and provides examples of product certification systems.
Competent authorities may require third party product certification of water monitoring equipment that is to be
used for compliance monitoring. An example of a third party certification scheme is given in Annex A.
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1 Scope
This part of prEN 16479-1 defines general requirements, performance requirements and conformity test
procedures for automated sampling devices (samplers) for water and waste water that:
sample water and waste water from non-pressurized (i. e. open to atmosphere) channels or vessels;
sample over extended periods to collect discrete or composite samples based on time or flow proportional
sampling;
are intended to be permanently or temporarily sited.
Specific variations of the performance requirements are listed in Annex C for samplers to be used for the
collection of samples of final effluent or influent for the purpose of monitoring the performance of waste water
treatment works, as required under the Urban Waste Water Treatment Directive (UWWTD).
Samplers to be used for other applications do not have to be assessed against the specific variations on the
performance requirements listed in Annex C.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
automated sampling devices (samplers) for water and waste water
equipment for collecting and storing samples of water or wastewater for subsequent analysis
2.2
bias
estimate of a systematic measurement error
Note 1 to entry: The systematic measurement error is a component of measurement error that in replicate
measurements remains constant or varies in a predictable manner
[SOURCE: ISO/IEC Guide 99:2007, 2.18, modified — Note 1 to entry has been added.]
2.3
composite sample
two or more samples or sub-samples, mixed together in appropriate known proportions (either discretely or
continuously), from which the average result of a desired requirement may be obtained
Note 1 to entry: The proportions are usually based on time or flow measurements.
2.4
constant volume variable time sampling
C.V.V.T.
flow proportional sampling based on collecting equal increments of sample at equal increments of flow.
2.5
constant time variable volume sampling
C.T.V.V.
flow proportional sampling based on collecting samples at fixed time intervals but where the volume of sample
is varied in proportion to the flow.
2.6
determinand
property that is to be measured
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2.7
error
difference between the value of the determinand obtained and the conventional quantity value or a reference
quantity value, after compensating for any errors in the test equipment
2.8
rated operating conditions
minimum to maximum values of any environmental, fluid or electrical parameter within which the sampler is
designed to operate without adjustment and with errors within performance limits
2.9
lift height
vertical distance between the surface of the fluid being sampled and the highest point to which the sample is
lifted
Note 1 to entry: Sometimes called “sampling head” or “suction height”.
2.10
precision
closeness of agreement between indications or measured quantity values obtained by replicate
measurements on the same or similar objects under specified conditions.
[SOURCE: ISO/IEC Guide 99:2007, 2.15]
2.11
sampling interval
time between successive sampling events
2.12
sampling line
conduit from intake point to sample delivery point into the collection vessel
2.13
time proportional sampling
equal volumes of sample or sub-sample collected at equal increments of time
3 General requirements
See 5.3 for details on verification by inspection.
The sampler shall have a unique designation that provides for its unambiguous identification.
The construction and operating methodology of the sampler shall be such as to ensure that the chemical
composition of the sample is not altered by the sampling procedure.
The sampler shall have a rated maximum lift height at which all requirements of section 4 of this standard are
fulfilled. The rated maximum lift height shall be inscribed on the sampler or declared in the operating manual
published by the manufacturer.
NOTE 1 Conformity testing of the sampler will be based on a range of lift heights up to 7 m or the sampler’s rated
maximum lift height.
The sampler shall have provision for the user to set the volume of a discrete sample.
The sampler shall have stated minimum and maximum sample volumes of a discrete sample. The stated
minimum and maximum sample volumes shall be inscribed on the sampler or declared in the operating
manual published by the manufacturer.
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NOTE 2 Unless otherwise stated in section 5 of this standard conformity testing of the sampler will be based on a
sample volume of 250 ml or the stated maximum sample volume if smaller.
For samplers that have integrated sample storage the storage capacities shall be stated. The stated
capacities, both by number(s) and volume(s) of individual bottles and of a composite container, shall be
inscribed on the sampler or declared in the operating manual published by the manufacturer.
NOTE 3 Annex C specifies a minimum total sample volume, collected either as a composite or in individual bottles, of
not less than 2,5 l for UWWTD sampling.
The sampler shall be capable of collecting a series of samples, on a timed and/or a flow proportional basis.
Samples can be collected and stored in individual bottles or a single composite sample bottle.
The possible sampling options are illustrated in Figure 1.
Key
a) Flow rate curve
b) Time proportional sampling
c) C.V.V.T. Flow proportional sampling
d) C.T.V.V. Flow proportional sampling
Q discharge
t time
Figure 1 — Sampling options
The possible sampling intervals shall be inscribed on the sampler or declared in the operating manual
published by the manufacturer.
NOTE 4 For time proportional sampling, provision should be made for the user to set the sample interval as a minimum
in the range 5 min to 1 h with increments of 1 min.
NOTE 5 For flow proportional sampling, provision should be made for the sample interval (in the case of C.V.V.T.
sampling) or the sample volume (in the case of C.T.V.V. sampling) to be set on the basis of a flow signal (e.g. pulse or
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4 mA to 20 mA current loop) from a flow meter. For pulse inputs, the relationship between pulse input and sample interval
or volume should be adjustable as a minimum over the range 1 pulse to 1 999 pulses in increments of 1 pulse.
The sampler control unit shall be capable of recording sample collection failures.
The sampler control unit shall be capable of recording any low battery alarm during sample collection.
The nominal internal diameter of the sample line shall not be less than 9 mm to minimise clogging.
NOTE 6 This requirement excludes pipe restriction caused by the normal operation of pinch valves and peristaltic
pumps.
The sampler shall be capable of purging the contents of the sampling line between each sampling event.
The sampler shall have stated ingress protection (IP) rating inscribed on the sampler or stated in the operating
manual.
4 Performance requirements
Annex B defines in detail how performance requirements are determined.
4.1 Sample volume
See conformity test at 5.4.2.1, 5.4.2.2 and 5.4.2.3.
The bias of the sample volume and precision at the 95 % confidence limit, shall each not be greater than 5 %
of the set volume at 20 °C, over the tested range for lift height.
NOTE 1 The bias is calculated as the mean volume minus the set volume divided by the mean volume.
NOTE 2 The precision is calculated as 2 times the sample standard deviation (s) of the measured volumes divided by
the mean volume at the 95% confidence limit;
4.2 Sample line velocity
See conformity test at 5.4.3.
The average velocity of the sample as it passes through the sample line during the sampling event shall not
be less than 0,5 m/s, at each tested lift height and at the rated operating voltage for the power supply.
4.3 Power supply
See conformity test 5.4.4.
The average velocity of the sample as it passes through the sample line during the sampling event shall not
be less than 0,5 m/s between the minimum and maximum rated operating voltages for the power supply.
4.4 Sample integrity
See conformity test 5.4.5.
Samplers that are intended for use for sampling under the Urban Waste Water Treatment Directive (UWWTD)
shall conform to the requirements specified in Annex C.
NOTE The design of a sample integrity test for other applications should be based on EN ISO 5667-3:1996 [8] which
provides guidance on the precautions to be taken to preserve and transport water samples. The same pass criteria should
be applied when using a test fluid for an application other than the UWWTD and for which relevant determinands have
been identified. Where an application can involve trace analysis additional demineralised water samples should be taken
to act as blanks
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4.5 Sample timing error
See conformity test 5.4.6.
The error of the sampler interval timing mechanism shall be no greater than ± 10 s per 24 h.
4.6 Effect of ambient temperature
See conformity tests at 5.4.7.
4.6.1 Samplers NOT incorporating sample temperature control
Samplers which do not incorporate a means for maintaining the temperature of the sample within pre-set limits
shall conform to the sample volume error requirements in 4.1 when operated within one of the following sets
of rated operating conditions with regards to ambient temperature:
a) from 0 °C to +40 °C; or
b) from -10 °C to +40 °C.
The rated operating conditions for the process fluid temperature shall be in the range from +1 °C to +30°C.
4.6.2 Samplers incorporating sample temperature control
Samplers which incorporate a means for maintaining the temperature of the sample within pre-set limits shall
conform to the sample volume error requirements in 4.1 when operated within an ambient temperature range
from -10 °C to +40 °C and a process fluid temperature range from +1 °C to +25 °C.
The mean temperature of the sample shall be maintained within the range from 0 °C to +5 °C during the
sampling period, when the sampler is operated within the rated operating conditions for ambient temperature
and process fluid temperature.
In the case of mains powered samplers, after completion of the sampling period, the sample temperature shall
remain within the range from 0 °C to +5 °C for a minimum period of 24 h. The design of the sample
temperature control shall ensure that ice does not form in the sample.
In the case of portable samplers which are not powered directly from a mains electricity supply, the minimum
period of time, from the end of the sampling period, over which the temperature of the sample will remain
within the range from 0 °C to +5 °C with no formation of ice shall be 12 h.
5 Conformity testing
5.1 General requirements
The sampler shall be installed in accordance with any instructions provided by the manufacturer.
Each performance requirement for the sampler shall be considered on its own when performing the conformity
tests.
Sampler conformance shall be determined by processing the data from the tests in accordance with the
calculation methods summarized in Annex B.
Results from the conformity testing should be reported using the example report form in Annex D.
5.2 Test conditions
The sample line shall be arranged so that no part of the sample is retained within the sample line.
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During tests that require the sampler to collect a sample of fluid, the vessel containing the fluid to be sampled
shall be open to the atmosphere.
In the case of a battery powered sampler, the battery shall be fully charged at the start of each conformity test
unless stated otherwise in the test conditions.
Prior to carrying out any series of consecutive tests, the sampler shall be operated, for a total operating period
of 2 000 sampling cycles, under the following conditions:
lift height 7 m (or the rated maximum lift height);
sampling interval 5 min;
sample volume 250 ml, (or the stated maximum volume if less than 250 ml);
samples shall be discarded or run to waste.
The sampler may be maintained, cleaned or recalibrated in accordance with the manufacturer’s instructions
prior to any test, but adjustments shall not be carried out during the course of the test.
Table 1 gives the reference conditions for possible influence quantities. The sampler shall be tested with all
influence quantities at their reference values, including tolerances, unless where specifically varied in any one
test.
Table 1 — Test reference conditions
Influence quantity Reference value Tolerance
Ambient temperature 20 °C ±2,5 °C
Ambient humidity at 20 °C < 60 % ±15 %
Sample temperature 20 °C ±2,5 °C
a a
Supply voltage (AC) 230 V (or 110 V) ±6 %
Supply voltage (DC) Appropriate to sampler Appropriate to sampler
a
CENELEC Harmonisation Document HD 472 S1:1988 [7]
5.3 Initial checks
Ensure that the sampler is set up, calibrated and adjusted in accordance with the manufacturer’s instructions.
NOTE The manufacturer may set up and demonstrate the sampler before the testing begins.
The sampler (or statements in the manufacturer’s operating manual) shall be inspected to verify conformance
to the general requirements listed in Section 3, as appropriate to the sampler under test. The means by which
each requirement is fulfilled shall be reported.
5.4 Performance tests
5.4.1 General
For samplers capable of operation under more than one principle (i.e. time proportional, C.V.V.T flow
proportional and C.T.V.V. flow proportional) all available options shall be tested.
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5.4.2 Sample volume
5.4.2.1 Time proportional sampling
The sample volume errors for samplers operating on the time proportional principle shall be determined in
accordance with procedure below.
1) Set the sampler to operate on time proportional sampling.
2) Programme the sampler to collect 24 samples with a fixed sampling interval and a sample volume of
250 ml (or the maximum sample volume if less than 250 ml).
3) Operate the programme at a lift height of 1 m.
4) Measure and record the volume of each sample.
5) Repeat the sampling programme at 7 m (or the rated maximum lift height) and at half the maximum
lift height. In each case, measure and record the volume of each sample.
6) Calculate and report in accordance with Annex B, section B.1
5.4.2.2 C.V.V.T. flow proportional sampling
The sample volume errors for samplers operating on the Constant Volume Variable Time (C.V.V.T.) flow
proportional sampling principle shall be determined in accordance with the procedure below.
NOTE 1 For samplers capable of operating with different input signals (analogue, pulse, digital) each input should be
tested separately.
1) Programme the sampler for the collection of C.V.V.T. flow proportional samples with a sample
collected at 10 minute intervals when the maximum input signal is applied.
NOTE 2 For samplers using a pulse input programme the sampler for the collection of C.V.V.T. flow proportional
samples with a sample collected at 10 min intervals when the maximum input signal is applied.
NOTE 3 If the maximum sample volume which can be set is less than 250 ml then select the maximum volume and
adjust the sample collection rate accordingly, e.g. in the case of a sample volume of 125 ml, the sample collection rate
3
would be one 125 ml sample per 2,5 m .
2) Operate the sampler at a lift height of 1 m.
3) Apply a simulated flow signal representing 25 % of the maximum input signal until 6 individual
samples have been collected.
4) Determine the elapsed time from the instant that the sampler activates for the first sample to the
instant that the sampler activates for the sixth sample.
5) Calculate the timing error between the first and last sampling action such that if the timing function
overruns the error is reported as positive.
6) Normalise the reported error to seconds per 24 h.
7) Sequentially increase the flow signal to represent a flow rate of 50 %, 75 % and 100 % of the
maximum input signal. In each case collect 6 individual samples and repeat steps 4 to 6.
8) Determine the volume of each sample and the simulated flow volume time increment between each
sample event.
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9) Repeat the procedure from step 2 for lift height at 7 m (or the rated lift height) and at half the
maximum lift height. In each case, measure and record the volume of each sample.
10) Calculate and report in accordance with Annex B section B.1 and B4.
5.4.2.3 C.T.V.V. flow proportional sampling
The sample volume error for samplers operating on the Constant Time Variable Volume (C.T.V.V.) flow
proportional sampling principle shall be determined in accordance with the procedure below.
NOTE For samplers capable o
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