EN 14884:2005

SLOVENSKI STANDARD
01-maj-2006
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Air quality - Stationary source emissions - Determination of total mercury: automated
measuring systems
Luftbeschaffenheit - Emissionen aus stationären Quellen - Bestimmung der
Gesamtquecksilber-Konzentration: Automatische Messeinrichtungen
Qualité de l'air - Emissions de sources fixes - Détermination de la concentration en
mercure total : systemes automatiques de mesure
Ta slovenski standard je istoveten z: EN 14884:2005
ICS:
13.040.40 (PLVLMHQHSUHPLþQLKYLURY Stationary source emissions
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 14884
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 13.040.40
English Version
Air quality - Stationary source emissions - Determination of total
mercury: automated measuring systems
Qualité de l'air - Emissions de sources fixes - Luftbeschaffenheit - Emissionen aus stationären Quellen -
Détermination de la concentration en mercure totale: Bestimmung der Gesamtquecksilber-Konzentration:
systèmes automatiques de mesure Automatische Messeinrichtungen
This European Standard was approved by CEN on 28 November 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14884:2005: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction.4
1 Scope .5
2 Normative references .5
3 Terms and definitions.5
4 Principle.6
5 AMS performance criteria for QAL 1 .6
6 AMS location .7
7 Calibration and validation of the AMS (QAL2) .7
7.1 General .7
7.2 Calibration procedure.7
7.2.1 Parallel measurements with SRM .7

7.2.2 Automatic recording of AMS output signals.8
7.3 Establishing the calibration function .8
8 Ongoing quality assurance during operation (QAL 3) .8
9 Annual surveillance test (AST) .8
Annex A (informative)  Example of calculation of the calibration function and of the variability
test .9
A.1 General .9
A.2 Data evaluation .9
A.2.1 General .9
A.2.2 Calculation of measured values of the SRM at standard conditions.11
A.2.3 Calibration function .12
A.2.4 Calibrated values of AMS .13
A.2.5 Conversion of data to standard conditions .13
A.2.6 Valid calibration range.14
A.2.7 Test of variability.15
Bibliography.18

Foreword
This European Standard (EN 14884:2005) has been prepared by Technical Committee CEN/TC 264 “Air
quality”, 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 June 2006, and conflicting national standards shall be withdrawn at
the latest by June 2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
Introduction
This European Standard describes the quality assurance procedures related to Automated Measuring
Systems (AMS) for the determination of total mercury in flue gas, in order to meet the uncertainty
requirements on measured values given by regulations, national or other legislation.
This European Standard is only applicable in conjunction with the general document on quality assurance of
AMS described in EN 14181, and provides indications, which are specific to measurements of total mercury.
The calibration and validation of mercury AMS are performed by parallel measurements with the reference
manual method described in EN 13211.
The calibration and validation of mercury AMS are performed by parallel measurements with the reference
0 2+
manual method described in EN 13211. The species of mercury (Hg and Hg ) and the physical occurrence
(gaseous, in dust or in droplets) can vary significantly depending on the type of process to be monitored.
A total mercury AMS or a gaseous mercury AMS can be chosen. Whether or not a gaseous mercury AMS can
fulfil the requirements for total mercury depends on the process and sampling location.
1 Scope
This European Standard specifies specific requirements on automated measuring systems (AMS) for
monitoring of total mercury. It is derived from EN 14181, which is the general document on the quality
assurance of AMS. It is only applicable in conjunction with EN 14181.
This European Standard sets specific requirements for the quality assurance levels and annual surveillance
test as specified in EN 14181, for mercury AMS used for proving that the mercury emissions from a source
3 3 )
are compliant with emission limits between 0,03 mg/m and 0,5 mg/m (standard conditions) in ducted
gaseous streams. This European Standard is applicable by direct correlation with the standard reference
method (SRM) described in EN 13211.
This European Standard is primarily developed for emissions from waste incinerators. From a technical point
of view, it may be applied to other processes, for which measurement at an emission limit is required with
defined uncertainty.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. For
dated references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 13211:2001, Air quality — Stationary source emissions — Manual method of determination of the
concentration of total mercury
EN 14181:2004, Stationary source emissions — Quality assurance of automated measuring systems
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 17025:2005, General requirements for the competence of testing and calibration laboratories
(ISO/IEC 17025:2005)
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 13211:2001 and
EN 14181:2004 and the following apply.
3.1
automated measuring system (AMS)
measuring system permanently installed on site for continuous monitoring of emissions
NOTE 1 An AMS is a method, which is traceable to a reference method.
NOTE 2 Apart from the analyser, an AMS includes facilities for taking samples (e.g. sample probe, sample gas lines,
flow meters, regulators, delivery pumps) and for sample conditioning (e.g. dust filter, moisture removal devices, converters,
diluters). This definition also includes testing and adjusting devices that are required for regular functional checks.

3 3
1)
m expressed as m under dry conditions, normalized to 273 K and 101,3 kPa and 11,0 % (volume fraction) O (unless
otherwise stated).
NOTE 3 For the purpose of this European Standard, AMS means automated mercury measuring system.
3.2
emission limit value
limit value related to the uncertainty requirement
NOTE For the EU directives [1] and [2] it is the daily emission value that relates to an uncertainty requirement.
3.3
standard conditions
reference values for a dry gas at a pressure of 101,3 kPa and a temperature of 273 K
3.4
Standard Reference Method (SRM)
method described and standardised to define an air quality characteristic, temporarily installed on site for
verification purposes
3.5
t
sample
sample time period of the automated measurement system
3.6
t
cycle
time of the total measurement cycle of the monitor
4 Principle
This European Standard is derived from the general standard on the quality assurance of AMS (EN 14181). It
shall be applied in conjunction with that standard. This European Standard only deals with the specific aspects
related to mercury monitoring.
According to EN 14181, three different levels of quality assurance are defined, designated as Quality
Assurance Levels (QAL). These levels cover the suitability of an AMS for its measuring task (QAL1), the
validation of the AMS following its installation (QAL2), the control of the AMS during its ongoing operation on
an industrial plant (QAL3). An annual Surveillance Test (AST) is also defined.
5 AMS performance criteria for QAL 1
The performance of the AMS shall be assessed in a suitability test referred to as QAL1. Suitability tests for an
AMS are usually carried out within the framework of certification or type approval procedures. The suitability
test comprises a separate laboratory test and a three-month field test in a typical application.
NOTE The requirements for values of performance characteristics will be specified in a European Standard on AMS
certification.
The manufacturer shall ensure that the delivered AMS has the same characteristics as the tested devices.
It shall be proven by use of EN ISO 14956 that the total uncertainty of the measured results obtained by the
AMS meets the specifications for uncertainty stated in the applicable regulations. This total uncertainty is
calculated by summing all the relevant uncertainty components arising from the individual performance
characteristics in an appropriate manner. The AMS suitability shall be evaluated for the plant specific
conditions taking into account the anticipated variations of the physical environment and interferences. Cross
sensitivities of interferents in the gas to be measured are to be checked alone and together with mercury and
its compounds. If there is any interaction then a restricted use of an AMS at specific emission sources is
possible.
6 AMS location
The AMS shall be located in s
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