SIST EN 15267-3:2008

Air quality - Certification of automated measuring systems - Part 3: Performance criteria and test procedures for automated measuring systems for monitoring emissions from stationary sources

This European Standard specifies the performance criteria and test procedures for automated measuring systems that measure gases and particulate matter in, and flow of, the waste gas from stationary sources.
This European Standard supports the requirements of particular EU Directives. It provides the detailed procedures covering the QAL1 requirements of EN 14181 and, where required, input data used in QAL3.

Luftbeschaffenheit - Zertifizierung von automatischen Messeinrichtungen - Teil 3: Mindestanforderungen und Prüfprozeduren für automatische Messeinrichtungen zur Überwachung von Emissionen aus stationären Quellen

Diese Europäische Norm legt Mindestanforderungen und Prüfprozeduren für automatische Messeinrichtungen zur Messung von Gasen und partikelförmigen Stoffen im Abgas stationärer Quellen sowie zur Messung des Volumenstroms des Abgases fest.
Diese Europäische Norm untersetzt die Anforderungen von bestimmten EG-Richtlinien. Sie stellt detaillierte Verfahren zur Umsetzung der Anforderungen der ersten Qualitätssicherungsstufe (QAL1) der EN 14181 und, soweit gefordert, die Eingangsdaten für die dritte Qualitätssicherungsstufe (QAL3) bereit.

Qualité de l'air - Certification des systèmes de mesurage automatisés - Partie 3: Spécifications de performance et procédures d'essai pour systèmes de mesurage automatisés des émissions de sources fixes

La présente Norme européenne spécifie les critères de performance et les procédures d’essai pour les
systèmes de mesurage automatisés servant à mesurer les gaz, les particules et le débit des effluents gazeux
de sources fixes.
La présente Norme européenne permet de répondre aux exigences de certaines Directives UE. Elle définit
des procédures détaillées couvrant les exigences QAL1 de l’EN 14181 ainsi que, le cas échéant, les données
d’entrée utilisées dans QAL3.

Kakovost zraka - Certificiranje avtomatskih merilnih sistemov - 3. del: Zahteve za delovanje in postopki preskušanja avtomatskih merilnih sistemov za spremljanje in nadzor emisij nepremičnih virov

General Information

• Status: Withdrawn
• Publication Date: 10-Feb-2008
• Withdrawal Date: 11-Jan-2024
• ICS: 03.120.20 - Product and company certification. Conformity assessment
• ICS: 13.040.01 - Air quality in general
• Technical Committee: KAZ - Air quality
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 20-Dec-2023
• Due Date: 12-Jan-2024
• Completion Date: 12-Jan-2024
• Ref Project: EN 15267-3:2007 - Air quality - Certification of automated measuring systems - Part 3: Performance criteria and test procedures for automated measuring systems for monitoring emissions from stationary sources

Relations

• Replaced By: SIST EN 15267-3:2024 - Air quality - Assessment of air quality monitoring equipment - Part 3: Performance criteria and test procedures for stationary automated measuring systems for continuous monitoring of emissions from stationary sources
• Effective Date: 01-Feb-2024

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2008
Kakovost zraka - Certificiranje avtomatskih merilnih sistemov - 3. del: Zahteve za
delovanje in postopki preskušanja avtomatskih merilnih sistemov za spremljanje
in nadzor emisij nepremičnih virov
Air quality - Certification of automated measuring systems - Part 3: Performance criteria
and test procedures for automated measuring systems for monitoring emissions from
stationary sources
Luftbeschaffenheit - Zertifizierung von automatischen Messeinrichtungen - Teil 3:
Mindestanforderungen und Prüfprozeduren für automatische Messeinrichtungen zur
Überwachung von Emissionen aus stationären Quellen
Qualité de l'air - Certification des systèmes de mesurage automatisés - Partie 3:
Spécifications de performance et procédures d'essai pour systèmes de mesurage
automatisés des émissions de sources fixes
Ta slovenski standard je istoveten z: EN 15267-3:2007
ICS:
03.120.20 Certificiranje proizvodov in Product and company
podjetij. Ugotavljanje certification. Conformity
skladnosti assessment
13.040.01 Kakovost zraka na splošno Air quality in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 15267-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2007
ICS 13.040.40
English Version
Air quality - Certification of automated measuring systems - Part
3: Performance criteria and test procedures for automated
measuring systems for monitoring emissions from stationary
sources
Qualité de l'air - Certification des systèmes de mesurage Luftbeschaffenheit - Zertifizierung von automatischen
automatisés - Partie 3: Spécifications de performance et Messeinrichtungen - Teil 3: Mindestanforderungen und
procédures d'essai pour systèmes de mesurage Prüfprozeduren für automatische Messeinrichtungen zur
automatisés des émissions de sources fixes Überwachung von Emissionen aus stationären Quellen
This European Standard was approved by CEN on 17 November 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15267-3:2007: E
worldwide for CEN national Members.

Contents Page
Foreword.3
0 Introduction.4
1 Scope .7
2 Normative references .7
3 Terms and definitions .7
4 Symbols and abbreviations .12
5 General requirements.15
6 Performance criteria common to all AMS for laboratory testing.17
7 Performance criteria common to all AMS for field testing .20
8 Performance criteria specific to measured components .22
9 General test requirements .27
10 Test procedures for laboratory tests.28
11 Requirements for the field test.42
12 Test procedures common to all AMS for field tests.43
13 Test procedures for particulate AMS.48
14 Measurement uncertainty .48
15 Test report .49
Annex A (informative) Standard reference methods .50
Annex B (normative) Interferents .51
Annex C (normative) Test of linearity .52
Annex D (normative) Determination of the total uncertainty.54
Annex E (informative) Elements of performance testing report.60
Bibliography .62

Foreword
This document (EN 15267-3:2007) has been prepared by Technical Committee CEN/TC 264 “Air quality”, the
secretariat of which is held by DIN.
This document shall be given the status of a national standard, either by publication of an identical text or by
endorsement, at the latest by June 2008 and conflicting national standards shall be withdrawn at the latest by
June 2008.
This document is Part 3 of a series of European Standards:
 EN 15267-1, Air quality — Certification of automated measuring systems — Part 1: General principles
 EN 15267-2, Air quality — Certification of automated measuring systems — Part 2: Initial assessment of
the AMS manufacturer’s quality management system and post certification surveillance for the
manufacturing process
 EN 15267-3, Air quality — Certification of automated measuring systems — Part 3: Performance criteria
and test procedures for automated measuring systems for monitoring emissions from stationary sources
 EN 15267-4, Air quality — Certification of automated measuring systems — Part 4: Performance criteria
and test procedures for automated measuring systems for monitoring ambient air quality
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, 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 and United Kingdom.

0 Introduction
0.1 General
CEN has established standards for the certification of automated measuring systems (AMS) used for
monitoring emissions from stationary sources and ambient air quality. This product certification is based on
the following four sequential stages:
a) performance testing of an AMS;
b) initial assessment of the AMS manufacturer’s quality management system;
c) certification;
d) post certification surveillance.
This European Standard defines the performance criteria and test procedures for performance testing of AMS
used to monitor emissions from stationary sources. Testing applies to complete measuring systems.
The overall assessment for the purposes of certification is conformity testing, whilst the evaluation of
performance against specified performance criteria is performance testing.
0.2 Legal drivers
This European Standard supports the requirements of the following EU Directives:
 Directive on the limitation of emissions of certain pollutants into the air from large combustion plants
(2001/80/EC);
 Directive on the incineration of waste (2000/76/EC);
 Directive on the limitation of emissions of volatile organic compounds due to the use of organic solvents
in certain activities and installations (1999/13/EC);
 Integrated Pollution Prevention and Control Directive (1996/61/EC);
 Directive on processes emitting greenhouse gases (2003/87/EC).
However, this European Standard can also be applied to the monitoring requirements specified in other EU
Directives.
0.3 Relationship to EN 14181
The Quality Assurance Levels (QAL) defined in EN 14181 cover the suitability of an AMS for its measuring
task (QAL1), the regular calibration and validation of the AMS (QAL2), and the control of the AMS during its
ongoing operation on an industrial plant (QAL3). An Annual Surveillance Test (AST) is also defined in
EN 14181.
This European Standard provides the detailed procedures covering the QAL1 requirements of EN 14181.
Furthermore, it provides input data for QAL3.
0.4 Processes
Field testing of an AMS is ordinarily carried out on the most highly demanding industrial process in the range
of applications for which a manufacturer seeks certification. The premise is that if the AMS performs
acceptably on this process, then experience has shown that the AMS generally performs well on the majority
of other processes. However, there are always exceptions and it is the responsibility of the manufacturer in
conjunction with the user to ensure that the AMS performs adequately on a specific process.
0.5 Performance characteristics
A combination of laboratory and field testing is detailed within this European Standard. Laboratory testing is
designed to assess whether an AMS can meet, under controlled conditions, the relevant performance criteria.
Field testing, over a minimum three month period, is designed to assess whether an AMS can continue to
work and meet the relevant performance criteria in a real application. Field testing is carried out on an
industrial process representative of the intended application for the AMS for which the manufacturer seeks
certification.
The main AMS performance characteristics are
 response time,
 repeatability standard deviation at zero and span points,
 lack of fit (linearity) under laboratory and field conditions,
 zero and span drift under laboratory and field conditions,
 influence of ambient temperature,
 influence of sample gas pressure,
 influence of sample gas flow for extractive AMS,
 influence of voltage variations,
 influence of vibration,
 cross-sensitivity to likely interferents contained in the waste gas other than the measured component,
 excursion of measurement beam of in-situ AMS,
 converter efficiency for NO AMS,
x
 response factors,
 performance and accuracy of the AMS against a standard reference method (SRM) under field conditions,
 maintenance interval under field conditions,
 availability under field conditions and
 reproducibility under field conditions.
The quality of reference or surrogate materials used under QAL3 for particulate matter measuring AMS is also
assessed.
This European Standard is an application and elaboration of EN ISO 9169 with additional and alternative
provisions for paired testing. Where this European Standard appears to differ from EN ISO 9169, it either
elaborates upon the requirements of EN ISO 9169 or differs in minor ways owing to the necessity to conduct
paired testing.
1 Scope
This European Standard specifies the performance criteria and test procedures for automated measuring
systems that measure gases and particulate matter in, and flow of, the waste gas from stationary sources.
This European Standard supports the requirements of particular EU Directives. It provides the detailed
procedures covering the QAL1 requirements of EN 14181 and, where required, input data used in QAL3.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 12619, Stationary source emissions — Determination of the mass concentration of total gaseous organic
carbon at low concentrations in flue gases — Continuous flame ionisation detector method
EN 13284-1, Stationary source emissions — Determination of low range mass concentration of dust — Part 1:
Manual gravimetric method
EN 13284-2, Stationary source emissions — Determination of low range mass concentration of dust — Part 2:
Automated measuring systems
EN 13526, Stationary source emissions — Determination of the mass concentration of total gaseous organic
carbon in flue gases from solvent using processes — Continuous flame ionisation detector method
EN 14181:2004, Stationary source emissions — Quality assurance of automated measuring systems
EN 15259:2007, Air quality — Measurement of stationary source emissions — Requirements for
measurement sections and sites and for the measurement objective, plan and report
EN 50160, Voltage characteristics of electricity supplied by public distribution systems
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)
EN 60068-1, Environmental testing — Part 1: General and guidance (IEC 60068-1:1988 + Corrigendum 1988
+ A1:1992)
EN 60068-2 (all tests), Environmental testing — Part 2: Tests
EN ISO 14956, Air quality — Evaluation of the suitability of a measurement procedure by comparison with a
required measurement uncertainty (ISO 14956:2002)
EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC
17025:2005)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
automated measuring system
AMS
entirety of all measuring instruments and additional devices for obtaining a result of measurement
NOTE 1 Apart from the actual measuring device (the analyser), an AMS includes facilities for taking samples (e.g.
probe, sample gas lines, flow meters and regulator, delivery pump) and for sample conditioning (e.g. dust filter, pre-
separator for interferents, cooler, converter). This definition also includes testing and adjusting devices that are required
for functional checks and, if applicable, for commissioning.
NOTE 2 The term “automated measuring system” (AMS) is typically used in Europe. The term “continuous emission
monitoring system” (CEM) is also typically used in the UK and USA.
3.2
reference method
RM
measurement method taken as a reference by convention, which gives, the accepted reference value of the
measurand
NOTE 1 A reference method is fully described.
NOTE 2 A reference method can be a manual or an automated method.
NOTE 3 Alternative methods can be used if equivalence to the reference method has been demonstrated.
[EN 15259:2007, 3.8]
3.3
standard reference method
SRM
reference method prescribed by European or national legislation
NOTE Standard reference methods are used e.g. to calibrate and validate AMS and for periodic measurements to
check compliance with limit values.
[EN 15259:2007, 3.9]
3.4
measurement
set of operations having the object of determining a value of a quantity
[VIM:1993, 2.1]
3.5
paired measurement
simultaneous recording of results of measurement at the same measurement point using two AMS of identical
design
3.6
measurand
particular quantity subject to measurement
[VIM:1993, 2.6]
NOTE The measurand is a quantifiable property of the waste gas under test, for example mass concentration of a
measured component, temperature, velocity, mass flow, oxygen content and water vapour content.
3.7
measured component
constituent of the waste gas for which a defined measurand is to be determined by measurement
[EN 15259:2007, 3.6]
NOTE Measured component is also called determinand.
3.8
interferent
substance present in the waste gas under investigation, other than the measured component, that affects the
output
3.9
calibration
determination of a calibration function with (time) limited validity applicable to an AMS at a specific
measurement site
3.10
calibration function
linear relationship between the values of the SRM and the AMS with the assumption of a constant residual
standard deviation
[EN 14181:2004, 3.3]
NOTE The calibration function describes the statistical relationship between the starting variable (measured signal) of
the measuring system and the associated result of measurement (measured value) simultaneously determined at the
same point of measurement using a SRM.
3.11
reference material
substance or mixture of substances, with a known concentration within specified limits, or a device of known
characteristics
3.12
zero gas
gas mixture used to establish the zero point of a calibration curve when used with a given analytical procedure
within a given calibration range
3.13
zero point
specified value of the output quantity (measured signal) of the AMS and which, in the absence of the
measured component, represents the zero crossing of the AMS characteristic
NOTE In case of oxygen and some flow monitoring AMS, the zero point is interpreted as the lowest measurable
value.
3.14
span point
value of the output quantity (measured signal) of the AMS for the purpose of calibrating, adjusting, etc. that
represents a correct measured value generated by reference material between 70 % and 90 % of the range
tested
3.15
measured signal
output from an AMS in analogue or digital form which is converted into the measured value with the aid of the
calibration function
3.16
output
reading, or digital or analogue electrical signal generated by an AMS in response to a measured object
3.17
independent reading
reading that is not influenced by a previous individual reading by separating two individual readings by at least
four response times
3.18
individual reading
reading averaged over a time period equal to the response time of the AMS
3.19
performance characteristic
quantity assigned to an AMS in order to define its performance
NOTE The values of relevant performance characteristics are determined in the performance testing and compared
to the applicable performance criteria.
3.20
accuracy
closeness in agreement between a single measured value of the measurand, and the true value (or an
accepted reference value)
3.21
availability
fraction of the total monitoring time for which data of acceptable quality have been collected
3.22
averaging time
period of time over which an arithmetic or time-weighted average of concentrations is calculated
3.23
converter efficiency
efficiency with which the converter unit of a NO analyser reduces NO to NO
x 2
3.24
interference
negative or positive effect that a substance has upon the output of the AMS, when that substance is not the
measured component
3.25
cross-sensitivity
response of the AMS to interferents
NOTE See interference.
3.26
drift
monotonic change of the calibration function over a stated period of unattended operation, which results in a
change of the measured value
3.27
zero drift
change in the AMS reading at the zero point over the maintenance interval
3.28
span drift
change in AMS reading at the span point over the maintenance interval
3.29
maintenance interval
maximum admissible interval of time for which the performance characteristics remain within a pre-defined
range without external servicing, e.g. refill, calibration, adjustment
NOTE This is also known as the period of unattended operation.
3.30
lack of fit
systematic deviation, within the range of application, between the accepted value of a reference material
applied to the measuring system and the corresponding result of measurement produced by the calibrated
measuring system
NOTE In common language lack of fit is often called "linearity" or "deviation from linearity". Lack of fit test is often
called "linearity test".
3.31
response time
t
time interval between the instant of a sudden change in the value of the input quantity to an AMS and the time
as from which the value of the output quantity is reliably maintained above 90 % of the correct value of the
input quantity
NOTE The response time is also referred to as the 90 % time.
3.32
repeatability
ability of an AMS to provide closely similar indications for repeated applications of the same measurand under
the same conditions of measurement
3.33
reproducibility
R
f
measure of the agreement between two identical measuring systems applied in parallel in field tests at a level
of confidence of 95 % using the standard deviation of the difference of the paired measurements
NOTE 1 Reproducibility is determined by means of two identical AMS operated side by side. It is an AMS performance
characteristic for describing the production tolerance specific to that AMS. The reproducibility is calculated from the half-
hour averaged output signals (raw values as analogue or digital outputs) during the three-month field test.
NOTE 2 The term "field repeatability" is sometimes used instead of reproducibility.
3.34
uncertainty
parameter associated with the result of a measurement, that characterises the dispersion of the values that
could reasonably be attributed to the measurand
[ENV 13005:1999, B.2.18]
3.35
standard uncertainty
uncertainty of the result of measurement expressed as a standard deviation
[ENV 13005:1999, 2.3.1]
3.36
expanded uncertainty
quantity defining an interval about the result of a measurement that may be expected to encompass a large
fraction of the distribution of values that could reasonably be attributed to the measurand
[ENV 13005:1999, 2.3.5]
NOTE The interval about the result of measurement is established for a level of confidence of typically 95 %.
3.37
test laboratory
laboratory accredited to EN ISO/IEC 17025 for carrying out performance tests
NOTE CEN/TS 15675 provides an elaboration of EN ISO/IEC 17025 for application to emission measurements,
which should be followed when using standard reference methods listed in Annex A.
3.38
field test
test for at least three months on a plant appropriate to the field of application of the AMS
3.39
certification range
range over which the AMS is tested and certified for compliance with the relevant performance criteria
NOTE Certification range is always related to the daily ELV.
3.40
emissions limit value
ELV
limit value given in regulations such as EU Directives, ordinances, administrative regulations, permits, licences,
authorisations or consents
NOTE ELV can be stated as concentration limits expressed as half-hourly, hourly and daily averaged values, or mass
flow limits expressed as hourly, daily, weekly, monthly or annually aggregated values.
3.41
plant
installation
industrial facility on which an AMS is installed
4 Symbols and abbreviations
For the purposes of this document, the following symbols and abbreviations apply.
4.1 Symbols
a average value of the AMS readings in the linearity test
A intercept of the regression function in the linearity test
b sensitivity coefficient of sample gas flow
f
b sensitivity coefficient of sample gas pressure
p
b sensitivity coefficient of ambient temperature
t
b sensitivity coefficient of supply voltage
v
B slope of the regression function in the linearity test
c concentration; value of the reference material
c carbon mass concentration of substance i at 273 K and 1 013 hPa; individual reference material
i
value
c carbon mass concentration of propane at 273 K and 1 013 hPa
ref
c concentration of NO with ozone generator switched-off
NO,0
c concentration of NO with ozone generator at setting i (i = 1 to n)
NO,i
c concentration of total NO with ozone generator switched-off
NOx,0 x
c concentration of total NO with ozone generator at setting i (i = 1 to n)
NOx,i x
c average of c values
d residual
c
d relative residual
c,rel
E converter efficiency at setting i of the ozone generator (i = 1 to n)
i
f carbon-related response factor for substance i
i
m number of repetitions at reference material level c
c
n number of measurements; number of parallel measurements
p lower sample gas pressure
p higher sample gas pressure
∆p difference in sample gas pressure
r nominal flow rate
r lowest flow rate specified by the manufacturer
R reproducibility under field conditions
f
R regression coefficient of calibration function
R determination coefficient of calibration function
s standard deviation from paired measurements
D
s repeatability standard deviation of the measurement
r
t two-sided Students t-factor at a confidence level of 95 % with a number of degrees of freedom n – 1
n–1; 0,95
t relative difference between the response times determined in rise and fall mode
d
t response time determined in rise mode (average of four measurements)
r
t response time determined in fall mode (average of four measurements)
f
t outage time
o
t total operating time
tot
T temperature (absolute)
T ith temperature
i
u combined standard uncertainty
c
u uncertainty contribution caused by converter efficiency for AMS measuring NO
ce x
u uncertainty contribution caused by span drift from field test
d,s
u uncertainty contribution caused by zero drift from field test
d,z
u uncertainty contribution caused by standard deviation from paired measurements under field
D
conditions
u uncertainty contribution caused by influence of sample gas flow
f
u uncertainty contribution caused by cross-sensitivity (interference)
i
u uncertainty contribution to the total uncertainty of the measured values caused by a variation of
i
influence quantity X
i
u uncertainty contribution caused by lack of fit
lof
u uncertainty contribution caused by excursion of measurement beam
mb
u uncertainty contribution caused by influence of sample gas pressure
p
u uncertainty contribution caused by repeatability standard deviation at span
r
u uncertainty contribution caused by variation of response factors (TOC)
rf
u uncertainty contribution caused by reference material provided by the manufacturer
rm
u uncertainty contribution caused by influence of ambient temperature at span
t
u uncertainty contribution caused by influence of supply voltage
v
u(X ) standard uncertainty of the influence quantity X
i i
U minimum voltage specified by the manufacturer
U maximum voltage specified by the manufacturer
U expanded uncertainty at a level of confidence of 95 %
0,95
V availability
x measured signal
x ith measured signal; average of the measured signals for substance i
i
x minimum value of the average reading influenced by performance characteristic i during the
i,min
performance test
x maximum value of the average reading influenced by performance characteristic i during the
i,max
performance test
x value of the average reading with the influence quantity at its nominal value during the performance
i,adj
test
x ith measured signal of the first measuring system
1,i
x ith measured signal of the second measuring system
2,i
x individual AMS reading at reference material level c
c,i
x average of the measured signals for propane
ref
x upper limit of the certification range
u
x average of measured signals x
i
x average AMS reading at reference material level c
c
X ith influence quantity
i
4.2 Abbreviations
AMS Automated Measuring System
AST Annual Surveillance Test
ELV Emission Limit Value
QAL Quality Assurance Level
QAL1 First Quality Assurance Level
QAL2 Second Quality Assurance Level
QAL3 Third Quality Assurance Level
SRM Standard Reference Method
TOC Total Organic Carbon
5 General requirements
5.1 Application of performance criteria
The test laboratory shall test at least two identical automated measuring systems (AMS). All AMS tested shall
meet the performance criteria specified in this document as well as the uncertainty requirement specified in
the applicable regulations.
5.2 Ranges to be tested
5.2.1 Certification range
The certification range over which the AMS is to be tested shall comprise minimum and maximum values. The
coverage shall be fit for the intended application of the AMS. The certification range shall be specified as
follows:
a) for waste incinerators as the range usually begins from zero, if the AMS is able to measure zero, and a
value no greater than 1,5 times the daily average emissions limit value (ELV);
b) for large combustion plants as the range usually begins from zero, if the AMS is able to measure zero,
and a value no greater than 2,5 times the daily average emissions limit value (ELV);
c) for other plants in relation to the corresponding emission limit value or any other requirement related to
the intended application.
The AMS shall be able to measure instantaneous values in a range that is at least 2 times the upper limit of
the certification range in order to measure the half-hour values. If it is necessary to use more than one range
setting of the AMS to achieve this requirement, these supplementary ranges will require additional testing (see
5.2.2).
NOTE 1 In addition to the certification ranges stated above, manufacturers can choose supplementary ranges that are
larger than the certification range.
NOTE 2 Manufacturers can choose other ranges for different applications. If an AMS is tested e.g. for use on waste
incinerators, it can also be used on large combustion plants, if the supplementary ranges are tested as given in 5.2.2.
The certification range(s) and the performance criteria tested for each range shall be stated on the certificate.
The test laboratory should choose for the field test an industrial plant with challenging measuring conditions.
This means that the AMS can also be used under less demanding measuring conditions.
5.2.2 Supplementary ranges
If a manufacturer wishes to demonstrate performance over one or more supplementary ranges larger than the
certification range, some limited additional testing is required over all the supplementary ranges. This
additional testing shall at least include evaluations of the response time (see 10.9) and lack of fit (see 10.12).
Cross-sensitivity (see 10.19) has to be tested for interferents that have shown relevance during testing in the
certification range. The concentration of the relevant interferents shall be proportionally higher than the values
specified in Table B.1, where the proportionality factor is given by the ratio of the considered supplementary
range to the certification range.
Supplementary ranges and the performance criteria tested for these ranges shall be stated on the certificate.
5.2.3 Lower limit of ranges
The lower limit of the certification range is usually zero.
NOTE 1 The zero value is typically the detection limit.
NOTE 2 For oxygen measuring AMS the lower limit of the certification range can differ from zero.
5.2.4 Expression of performance criteria with respect to ranges
The performance criteria presented in Clause 6 are expressed in terms of a percentage of the upper limit of
the certification range for each measured component except for oxygen where the performance criteria are
expressed as volume concentrations. A performance criterion with respect to ranges is a value that
corresponds to the largest deviation allowed for each test, regardless of the sign of the deviation determined
in the test.
5.2.5 Ranges of optical in-situ AMS with variable optical length
The certification range for optical in-situ AMS with variable optical length shall be defined in units of the
measured component concentration multiplied by the length of the optical path.
The path length used for testing shall be stated on the certificate.
5.3 Manufacturing consistency and changes to AMS design
Certification is specific to the AMS version that has undergone performance testing. Subsequent design
modifications that might affect the performance of the AMS can invalidate the certification.
NOTE Design modifications apply to both hardware and software.
Manufacturing consistency and changes to AMS design are described in EN 15267-2.
5.4 Qualifications of test laboratories
Test laboratories shall be accredited to EN ISO/IEC 17025 and the appropriate test standards for carrying out
the tests defined in this European Standard. Test laboratories shall have knowledge on the uncertainties
attributed to the individual test procedures applied during performance testing.
CEN/TS 15675 provides an elaboration of EN ISO/IEC 17025 for application to emission measurements which
should be followed when using standard reference methods specified in Annex A.
6 Performance criteria common to all AMS for laboratory testing
6.1 AMS for testing
All AMS submitted for testing shall be complete. These specifications do not apply to the individual parts of an
AMS. The test report shall be issued for a specified AMS with all its parts listed.
An AMS that uses extractive sampling systems shall have appropriate provisions for filtering solids, avoiding
chemical reactions within the sampling system, entrainment effects and effective control of water condensate.
Measuring systems with different options for the sampling line length shall be tested with an appropriate
sampling line length agreed between the test laboratory and the manufacturer. The length shall be quoted in
the test report.
NOTE Use of longer sampling lines is covered by QAL2.
The test laboratory shall describe in the test report the type of sampling system.
6.2 CE labelling
The AMS shall comply with the requirements for CE labelling specified in applicable EU Directives. These
include, for example:
 Electro-Magnetic Compatibility Directive 89/336/EEC and its amendments 92/31/EEC and 93/68/EEC,
and
 Low-Voltage Directive 72/23/EEC and its amendment 93/68/EEC covering electrical equipment designed
for use within certain voltage limits.
AMS manufacturers or suppliers shall supply verifiable and traceable evidence of compliance with the
requirements of the relevant EU Directives applicable to the equipment.
6.3 Security
The AMS shall have a means of protection against unauthorised access to control functions.
6.4 Output ranges and zero-point
The AMS shall have a data output with a living zero point (e.g. 4 mA) so that both negative and positive
readings can be displayed.
The AMS shall have a display that shows the measurement response. The display may be external to the
AMS.
6.5 Additional data outputs
The AMS shall have a data output allowing an additional data display and recording device to be fitted to the
AMS, i.e. one for the data acquisition system and one supplementary output for QAL2, QAL3 and AST
according to EN 14181.
6.6 Display of operational status signals
The AMS shall have a means of displaying its operating status.
NOTE Status signals cover, for example, normal operation, stand-by, maintenance mode and malfunctions.
The AMS shall also have a means of communicating the operational status to a data handling and acquisition
system.
6.7 Prevention or compensation for optical contamination
An AMS that uses an optical method as the measuring principle shall have provisions for either prevention of
contamination of the optical system and/or compensation for its effects.
6.8 Degrees of protection provided by enclosures
Instruments limited to be mounted in ventilated rooms or cabinets, where any kind of precipitation cannot
reach the instrument, shall meet at least IP40 as specified in EN 60529.
Instruments limited to being mounted in areas where some kind of shelter against precipitation is in place, e.g.
a porch roof, but where precipitation can reach the instrument due to wind etc., shall meet at least IP54 as
specified in EN 60529.
Instruments that are designed to be used in the open air and without any weather protection shall at least
meet the requirements of standard IP65 as specified in EN 60529.
6.9 Response time
The AMS shall meet the performance criteria for response time specified in Clause 8.
6.10 Repeatability standard deviation at zero point
The AMS shall meet the performance criteria for repeatability standard deviation at the zero point specified in
Clause 8.
NOTE 1 The detection limit is two times the repeatability standard deviation at zero.
NOTE 2 The quantification limit is four times the repeatability standard deviation at zero.
6.11 Repeatability standard deviation at the span point
The AMS shall meet the performance criteria for repeatability standard deviation at the span point specified in
Clause 8.
6.12 Lack of fit
The AMS shall have a linear output and shall meet the performance criteria for lack of fit specified in Clause 8.
6.13 Zero and span drift
The manufacturer shall provide a description of the technique used by the AMS to determine and compensate
the zero and span drift. The description shall not be limited to an explanation of how the AMS compensates
for the effect of contamination of the optical surfaces of AMS that use optical techniques.
The test laboratory shall assess that the chosen reference material applied to the AMS as an independent
check of the instrument’s operation is capable of monitoring any relevant change in instrument response not
caused by changes in the measured component or stack gas condition.
The AMS shall allow recording the zero and span drift. The manufacturer shall describe how to obtain the zero
and span values.
The technique used should be sensitive to drift in as many of the active parts of the system as possible.
If the AMS has a means of automatic compensation for contamination and calibration and re-adjustment for
zero and span drift, and such adjustments are not capable of bringing the AMS within normal operational
conditions, then the AMS shall set a status signal.
In cases where the AMS cannot measure zero values, the drift has to be measured at the lower limit of the
certification range.
NOTE For example, some AMS which measure flow and oxygen are not able to measure zero values.
6.14 Influence of ambient temperature
The deviations of the AMS readings at the zero and span points shall not exceed the performance criteria
specified in Clause 8 for the following test ranges of the ambient temperature:
 from –20 °C to +50 °C for assemblies installed outdoors;
 from +5 °C to +40 °C for assemblies installed indoors, where the temperatures do not fall below +5 °C or
rise above +40 °C.
The manufacturer submitting an AMS for testing may specify wider ambient temperature ranges to those
above.
NOTE Temperature ranges tested are indicated in the certificate.
6.15 Influence of sample gas pressure
The deviations of the AMS reading at the span point shall not exceed the performance criterion specified in
Clause 8 when the sample gas pressure changes by 3 kPa above and below atmospheric pressure.
NOTE This typically applies to in-situ AMS, but not to extractive AMS, since the sample gas is conditioned and
typically not subject to significant variations of temperature and pressure once within the analyser.
6.16 Influence of sample gas flow for extractive AMS
The deviations of the AMS reading at the zero point and span point shall not exceed the performance criterion
specified in Clause 8, when the sample gas flow is changed in accordance with the manufacturer's
specification.
A status signal for the lower limit of the sample gas flow shall be provided.
6.17 Influence of voltage variations
The deviations of the AMS reading at the zero and span points shall not exceed the performance criterion
specified in Clause 8 when the voltage supply to the AMS varies from –15 % from the nominal value below to
+10 % from the nominal value above the nominal value of the supply voltage.
The AMS shall be capable of operating at a voltage that meets the requirements of EN 50160.
6.18 Influence of vibration
The deviations of the AMS readings at the zero and span points caused by vibrations typically expected at an
industrial plant shall not exceed the performance criteria specified in Clause 8.
6.19 Cross-sensitivity
The manufacturer shall describe any known sources of interference. Tests for non-gaseous interference
sources, or gases other than those listed in Annex B, shall be agreed with the test laboratory.
The AMS shall meet the performance criteria at the zero and span point for cross-sensitivity specified in
Clause 8.
6.20 Excursion of measurement beam of in-situ AMS
In the event of an excursion of the measurement beam within an AMS, the deviations of the AMS readings at
the zero point and span point shall not exceed the performance criterion specified in Clause 8 for the
maximum allowable deviation angle specified by the manufacturer. This angle shall not be smaller than 0,3 °.
6.21 Converter efficiency for NO AMS
x
Manufacturers shall specify, when seeking certification for AMS for measuring NO , whether certification is
x
required for the measurement of nitrogen monoxide (NO) and/or nitrogen dioxide (NO ). If a converter is used,
the converter shall meet the performance criteria for the converter efficiency specified in Clause 8.
NOTE 1 NO ordinarily means nitrogen monoxide (NO) plus nitrogen dioxide (NO ).
x 2
NOTE 2 NO concentrations are generally exp
...