SIST EN 13205:2002
(Main)Workplace atmospheres - Assessment of performance of instruments for measurement of airborne particle concentrations
Workplace atmospheres - Assessment of performance of instruments for measurement of airborne particle concentrations
This European Standard specifies methods for testing aerosol sampling instruments under prescribed laboratory conditions, and performance requirements that are specific to aerosol sampling instruments. These performance requirements, which include conformity with the EN 481 sampling conventions, apply only to the process of sampling the airborne particles from the air, not to the process of analysing particles collected by the process of sampling. Although analysis of samples collected in the course of testing is usually necessary in order to evaluate the sampler performance, the specified test methods ensure that analytical errors are kept very low during testing and do not contribute significantly to the end result. The determination of analytical errors and factors related to them (for example the bias, precision and limit of detection of the analytical method) is outside the scope of this standard. Where the aerosol sampling instrument requires the use of an external (rather than integral) pump, the pump is not subject to the requirements of this standard.
EN 482 contains general performance requirements for methods used for determining the concentrations of chemical agents in workplace atmospheres. These performance requirements include maximum values of overall uncertainty (a combination of precision and bias) achievable under prescribed laboratory conditions for the methods to be used. The requirements of EN 482 apply to the combined results of sampling airborne particles and analysing collected particles. This standard specifies how the performance of aerosol measurement methods is assessed with respect to the general requirements of EN 482, through the combination of sampling and analytical errors.
Arbeitsplatzatmosphäre - Bewertung der Leistungsfähigkeit von Geräten für die Messung der Konzentration luftgetragener Partikel
Diese Europäische Norm legt Verfahren zur Prüfung von Probenahmeeinrichtungen für Aerosole unter vor-geschriebenen
Laboratoriumsbedingungen fest und gibt Leistungsanforderungen an, die für Aerosol-Probe-nahmeeinrichtungen
spezifisch sind. Diese Leistungsanforderungen, zu denen die Übereinstimmung mit den
Konventionen der EN 481 für die Probenahme gehört, gelten nur für das Verfahren der Probenahme der
luftgetragenen Partikeln aus der Luft, nicht für den Prozess der Untersuchung der Partikeln, die im Prozess der
Probenahme gesammelt wurden. Obgleich die Untersuchung der im Verlauf der Prüfung gesammelten Proben
im Allgemeinen erforderlich ist, um die Leistungsfähigkeit der Probenahmeeinrichtung zu bewerten, sichern die
festgelegten Prüfverfahren, dass Untersuchungsfehler während der Prüfung sehr niedrig gehalten werden und
nicht signifikant zum Endergebnis beitragen. Die Bestimmung analytischer Fehler und mit ihnen verbundener
Faktoren (zum Beispiel die systematische Messabweichung, die Präzision und die Nachweisgrenze des
analytischen Verfahrens) liegt außerhalb des Anwendungsbereichs dieser Norm. Wenn die Aerosol-Probenahme-einrichtung
die Verwendung einer äußeren Pumpe anstatt einer eingebauten Pumpe erfordert, unterliegt die
Pumpe nicht den Anforderungen dieser Norm.
EN 482 enthält allgemeine Leistungsanforderungen für die Verfahren, die zur Bestimmung der Konzentration
chemischer Stoffe in Arbeitsplatzatmosphären angewendet werden. Zu diesen Leistungsanforderungen gehören
Maximalwerte für die Gesamtunsicherheit (einer Kombination von Präzision und systematischer Messabweichung),
die bei den zu verwendenden Verfahren unter vorgeschriebenen Laboratoriumsbedingungen erreichbar sind.
Die Anforderungen von EN 482 gelten für die kombinierten Ergebnisse der Probenahme der luftgetragenen
Partikeln und der Untersuchung der gesammelten Teilchen
Atmospheres des lieux de travail - Evaluation des performances des intruments de mesurage des concentrations d'aérosol
Cette norme spécifie les méthodes de test des instruments d'échantillonnage des concentrations d'aérosol soumis a des conditions de laboratoire imposées, ainsi que les exigences requises pour ces instruments d'échantillonnage d'aérosols. Ces exigences qui comprennent notamment la conformité aux conventions d'échantillonnage EN 481, s'appliquent uniquement au processus d'échantillonnage des particules d'aérosol contenues dans l'air, et non pas au processus d'analyse des particules recueillies dans le cadre du processus d'échantillonnage. L'analyse des échantillons recueillis au cours des essais est généralement nécessaire pour évaluer les performances de l'échantillonneur ; toutefois, les méthodes d'essai spécifiées permettent de conserver un tres faible taux d'erreurs analytiques au cours des essais, qui n'ont pas beaucoup d'incidence sur le résultat final. La détermination des erreurs analytiques (par exemple le biais, la fidélité et la limite de détection de la méthode d'analyse) n'entre pas dans le domaine d'application de la présente norme européenne. Certains échantillonneurs ont une pompe intégrée, d'autres non. Lorsque l'instrument nécessite l'utilisation d'une pompe externe (plutôt qu'intégrée), cette pompe n'est pas soumise aux exigences de la présente norme.
L'EN 482 indique les exigences requises pour les méthodes utilisées afin de déterminer les concentrations d'agents chimiques dans les atmospheres des lieux de travail. Ces exigences comprennent notamment la détermination des valeurs maximales de l'incertitude globale (qui combine précision et biais) pouvant etre obtenues dans le cadre des conditions de laboratoire prescrites pour les méthodes a utiliser. Les exigences de l'EN 482 s'appliquent aux résultats combinés de l'échantillonnage des particules d'aérosol et de l'analyse des particules recueillies.
Zrak na delovnem mestu - Ocenjevanje lastnosti merilnikov za merjenje koncentracij lebdečih delcev
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13205:2002
01-maj-2002
=UDNQDGHORYQHPPHVWX2FHQMHYDQMHODVWQRVWLPHULOQLNRY]DPHUMHQMH
NRQFHQWUDFLMOHEGHþLKGHOFHY
Workplace atmospheres - Assessment of performance of instruments for measurement
of airborne particle concentrations
Arbeitsplatzatmosphäre - Bewertung der Leistungsfähigkeit von Geräten für die Messung
der Konzentration luftgetragener Partikel
Atmospheres des lieux de travail - Evaluation des performances des intruments de
mesurage des concentrations d'aérosol
Ta slovenski standard je istoveten z: EN 13205:2001
ICS:
13.040.30 Kakovost zraka na delovnem Workplace atmospheres
mestu
SIST EN 13205:2002 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13205:2002
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SIST EN 13205:2002
EUROPEAN STANDARD
EN 13205
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2001
ICS 13.040.30
English version
Workplace atmospheres - Assessment of performance of
instruments for measurement of airborne particle concentrations
Atmosphères des lieux de travail - Evaluation des Arbeitsplatzatmosphäre - Bewertung der Leistungsfähigkeit
performances des intruments de mesurage des von Geräten für die Messung der Konzentration
concentrations d'aérosols luftgetragener Partikel
This European Standard was approved by CEN on 16 November 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13205:2001 E
worldwide for CEN national Members.
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EN 13205:2001 (E)
Contents
page
Foreword.4
Introduction .5
1 Scope .6
2 Normative references.6
3 Terms and definitions .7
4 Requirements.9
4.1 Summary of requirements.9
4.2 Accuracy.9
5 Test methods .10
5.1 Choice of laboratory tests to be used.10
5.2 Overview of test methods.11
6 Types of evaluation .11
7 Instructions for use .12
8 Marking, quality control .12
8.1 Marking.12
8.2 Quality control .13
Annex A (normative) Laboratory testing of samplers with respect to sampling conventions .14
A.1 Principle.14
A.2 Test method.14
A.2.1 General.14
A.2.1 Test conditions .14
A.2.2 Test variables.14
A.2.4 Experimental requirements .16
A.3 Calculation methods .18
A.3.2 Symbols and abbreviated terms .18
A.3.3 Determination of the sampling efficiency .19
A.3.4 Calculation of the sampled aerosol concentration. .19
A.3.5 Calculation of the ideal sampled aerosol concentration .19
A.3.6 Calculation of the sampler bias.19
A.3.7 Application of a sampler correction factor.20
A.3.8 Calculation of the uncertainty in the estimated sampler bias.20
A.3.9 Calculation of the sampler accuracy.20
A.4 Test report .21
A.4.1 Testing laboratory details and sponsoring organisation .21
A.4.2 Description of the tested sampler .21
A.4.3 Critical review of sampling process (see clause 5).21
A.4.4 Laboratory methods used .21
A.4.5 Details of experimental design.22
A.4.6 Presentation of experimental results.22
A.4.7 Data analysis.22
A.4.8 Sampler performance.22
Annex B (normative) Laboratory comparison of instruments.25
B.1 Principle .25
B.2 Test method.25
B.2.2 Test conditions .25
B.2.3 Test variables .26
B.2.4 Experimental requirements .28
B.3 Calculation methods .29
B.3.1 Symbols and abbreviated terms.29
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B.3.2 Distribution of ratios .29
B.3.3 Correction factor.29
B.3.4 Accuracy.29
B.3.5 Temperature stability.30
B.3.6 Time stability .30
B.4 Test Report.30
B.4.1 Testing laboratory details and sponsoring organisation .30
B.4.2 Description of the candidate instrument and reference sampler .30
B.4.3 Critical review of sampling process (clause 5).30
B.4.4 Test facilities .30
B.4.5 Details of experimental design.31
B.4.6 Data analysis.31
B.4.7 Candidate instrument performance.31
B.4.8 Summary and information for the user.31
Annex C (informative) Recommended procedure for field comparison of instruments.32
C.1 Principle.32
C.2 Comparison procedure.32
C.2.2 Comparison of two types of personal instrument.33
C.2.3 Comparison of two types of static instrument .33
C.2.4 Periodic validation .33
C.3 Calculation methods .33
C.3.1 Symbols and abbreviated terms .33
C.3.2 Estimation of the correction function.33
C.3.3 Exclusion of outliers .34
C.3.4 Residual uncertainty after transformation by the correction function.34
C.3.5 Equivalence.34
C.4 Documentation .34
C.4.1 General.34
C.4.2 Description of the candidate instrument and reference sampler .34
C.4.3 Critical review of sampling process (clause 5).35
C.4.4 Circumstances of field comparison .35
C.4.5 Details of experimental design.35
C.4.6 Data analysis.35
C.4.7 Equivalence.35
Annex D (normative) Handling and transport test.36
D.1 Principle.36
D.2 Test procedure .36
D.2.1 General.36
D.2.2 Test equipment .36
D.2.3 Mounting of the samplers.36
D.2.4 Test particles and method of loading collection media.36
D.2.5 Test method .37
D.3 Calculation methods.37
D.4 Test Report.37
D.4.1 Testing laboratory details and sponsoring organisation .37
D.4.2 Description of candidate instrument and collection medium .37
D.4.3 Description of test methods and materials.38
D.4.4 Results .38
D.4.5 Summary.38
Annex E (normative) Calculation of overall uncertainty .39
E.1 Principle .39
E.2 Definition of relative overall uncertainty.39
E.3 Combination of sampling and analytical bias .39
E.4 Combination of sampling and analytical precision .40
Annex F (informative) Analysis of sampling efficiency data .41
F.1 Introduction .41
F.2 Example of a balanced experimental design.41
F.3 Analysis of efficiency data using the polygonal approximation method .41
F.3.1 Estimation of mean sampled concentration .41
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F.3.2 Statistical model.42
F.4 Curve-fitting method.43
Bibliography .45
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 137 "Assessment of workplace
exposure", 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 2002, and conflicting national standards shall be withdrawn at the latest by
June 2002.
This document contains annexes A, B, D, E, that are normative and annexes C and F that are informative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,
Switzerland and the United Kingdom.
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EN 13205:2001 (E)
Introduction
EN 481 defines sampling conventions for the particle size fractions to be collected from workplace atmospheres in
order to assess their impact on human health. Conventions are defined for the inhalable, thoracic and respirable
aerosol fractions. These conventions represent target specifications for aerosol samplers, giving the ideal sampling
efficiency as a function of particle aerodynamic diameter.
In general, the sampling efficiency of real aerosol samplers will deviate from the target specification, and the
aerosol mass collected will therefore differ from that which an ideal sampler would collect. In addition, the
behaviour of real samplers is influenced by many factors such as external wind speed, that depend on the
environment in which the sampler is used.
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1 Scope
This European Standard specifies methods for testing aerosol sampling instruments under prescribed laboratory
conditions, and performance requirements that are specific to aerosol sampling instruments. These performance
requirements, which include conformity with the EN 481 sampling conventions, apply only to the process of
sampling the airborne particles from the air, not to the process of analysing particles collected by the process of
sampling. Although analysis of samples collected in the course of testing is usually necessary in order to evaluate
the sampler performance, the specified test methods ensure that analytical errors are kept very low during testing
and do not contribute significantly to the end result. The determination of analytical errors and factors related to
them (for example the bias, precision and limit of detection of the analytical method) is outside the scope of this
standard. Where the aerosol sampling instrument requires the use of an external (rather than integral) pump, the
pump is not subject to the requirements of this standard.
EN 482 contains general performance requirements for methods used for determining the concentrations of
chemical agents in workplace atmospheres. These performance requirements include maximum values of overall
uncertainty (a combination of precision and bias) achievable under prescribed laboratory conditions for the
methods to be used. The requirements of EN 482 apply to the combined results of sampling airborne particles and
analysing collected particles. This standard specifies how the performance of aerosol measurement methods is
assessed with respect to the general requirements of EN 482, through the combination of sampling and analytical
errors.
This standard applies to all instruments used for the health-related sampling of particles in workplace air, whatever
their mode of operation. Different test procedures and types of evaluation are included to enable application of this
standard to a wide variety of instruments. The standard should enable manufacturers and users of aerosol
sampling instruments to adopt a consistent approach to sampler validation, and provide a framework for the
assessment of sampler performance with respect to EN 481 and EN 482. It is the responsibility of the manufacturer
1)
of aerosol samplers to inform the user of the sampler performance under the laboratory conditions specified in this
European Standard. It is the responsibility of the user to ensure that the sampler complies with the overall
uncertainty requirements of EN 482 under the actual conditions of use.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed here. For dated
references, subsequent amendments to or revisions of any of these publications apply to this European Standard
only when incorporated in it by amendment or revision. For undated reference the latest edition of the publication
referred to applies (including amendments).
EN 481, Workplace atmospheres — Size fraction definitions for measurement of airborne particles.
EN 482, Workplace atmospheres — General requirements for the performance of procedures for the measurement
of chemical agents.
EN 1232, Workplace atmospheres -— Requirements and test methods for pumps used for personal sampling of
chemical agents in the workplace.
EN 1540, Workplace atmospheres — Terminology.
EN 12919, Workplace atmospheres – Pumps for the sampling of chemical agents with a volume flow rate of over 5
l/min – Requirements and test methods.
1)
-1
The inhalable convention is undefined for particle sizes in excess of 100 μm or for windspeeds greater than 4 ms . The tests required to
assess performance are therefore limited to these conditions. Should such large particle sizes or wind speeds actually exist at the time of
sampling, it is possible that different samplers meeting this standard may give different results.
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3 Terms and definitions
For the purposes of this European Standard the following terms and definitions apply.
3.1
accuracy
accuracy is the upper confidence limit of the bias or relative error in sampling the aerosol, which provides an
estimate of the range around the ideal or true concentration in which 95 % of the sampled concentrations can be
expected to lie
NOTE 1 Details of calculation methods for accuracy suited to different test methods are given in annexes A and B.
NOTE 2 Accuracy is generally defined as ‘The closeness of agreement between a test result and the accepted reference value’
(see ISO 3534-1).
3.2
ambient aerosol concentration
concentration of aerosol particles present in the air before the particles are affected by the presence of the sampler,
or in the case of a personal sampler by the presence of the person wearing the sampler
3.3
bias
in accordance with EN 482
3.4
candidate instrument (for use in comparisons)
any kind of instrument, including a sampling instrument, that can be used to measure the concentration of aerosol
particles and whose performance is to be determined
3.5
correction function
mathematical function relating aerosol concentrations measured using a candidate instrument to those measured
using a reference sampler, determined by a comparison of the two instruments
3.6
personal sampler
in accordance with EN 1540
3.7
precision
in accordance with EN 482
3.8
reference sampler (for use in comparisons)
sampler that has previously been tested using the methods described in annex A of this standard, and whose
accuracy is estimated to be less than or equal to 30 % under the environmental conditions of the comparison
3.9
sampler inlet efficiency; entry efficiency
for each particle aerodynamic diameter, the ratio of aerosol concentration passing through the sampler inlet
system, to the corresponding ambient aerosol concentration
NOTE The inlet efficiency is the product of the aspiration efficiency, which characterises the aerodynamic behaviour of the
sampler orifice, and the size-dependent effects of particle bounce and losses both inside and outside the inlet. The inlet losses
can, for some samplers, also depend on external factors such as wind speed and aerosol size distribution.
3.10
sampler, sampling instrument; (generic term)
apparatus for separating aerosol particles from their carrier gas (normally air)
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3.11
sampler specimen (specific term)
single individual of a given type of sampling instrument
3.12
sampling efficiency
for each particle aerodynamic diameter, the ratio of aerosol concentration collected for measurement by the
sampling process, to the corresponding ambient aerosol concentration
3.13
sampling process
physical mechanisms by which particles are selectively aspirated into a sampler inlet, graded by means of inertial
or other forces, transported to the collection substrate or to other internal surfaces, or lost from the collection
substrate
3.14
separation efficiency
for each particle aerodynamic diameter, the ratio of the sampling efficiency to the inlet efficiency
3.15
static sampler
in accordance with EN 1540
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4 Requirements
4.1 Summary of requirements
Table 1 —Summary of aerosol sampler performance requirements
Attribute Requirement Test method Notes
Accuracy See 4.2 Annex A
Annex B
1
Specimen variability Variations in sampled mass <5 %, for Annex A )
a group of 6 identically exposed
specimens
2
Air flow stability (for Relevant clauses of EN 1232 and Relevant clauses of )
EN 1232 and EN 12919
samplers with
...
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