SIST EN 16589-1:2023
(Main)Laboratory local exhaust devices - Part 1: General requirements and type test methods for articulated extraction arms
Laboratory local exhaust devices - Part 1: General requirements and type test methods for articulated extraction arms
This document applies to an articulated extraction arm used as a local exhaust device in laboratories and comprised of a capture device (receiving, enclosing or capture hood, nozzle or flat screen) connected to an extraction arm which is articulated ducting to move air from the capture device to discharge.
This standard specifies:
- a method for type testing;
- a method to assess the three-dimensional capture zone of local exhaust devices mounted on an articulated extract arm;
- a method for assessing the emission release capture efficiency of local exhaust devices connected to an articulated extract arm and its robustness to a challenge of air disturbance directly in front of and in close proximity to the capture hood and release source;
- a method for establishing the reachable, three-dimensional workspace of local exhaust devices mounted on an articulated extract arm by measuring the possible positions of the opening of the device;
- a method for measuring the pressure drop and noise level in the type test;
- instructions for marking the device and recommended content of information for use;
- guidance for use describing the limitations of local exhaust devices with articulated extract arm for different airflow rates establishing the capture zone;
- guidance on selection, installation, commissioning, and control testing of articulated extract arms and their local exhaust ventilation systems.
The scope does not include filtration requirements and impact of fully or partly recirculation of the airflow extracted by an articulated extract arm.
Lokale Absaugeinrichtungen im Labor - Teil 1: Absaugarme mit Gelenken
Dieses Dokument gilt für Gelenkabsaugarme, die als lokale Absaugvorrichtungen in Laboratorien verwendet werden und die aus einer speziellen Erfassungsvorrichtung (Haube, Stutzen oder Flachschirm zum Aufnehmen, Umschließen oder Erfassen) bestehen, die mit einem spezifischen Absaugarm in Form einer Gelenkabluftleitung für den Transport der Luft von der Erfassungsvorrichtung zum Luftaustritt verbunden ist.
Dieses Dokument legt Folgendes fest:
— ein Verfahren für die Baumusterprüfung;
— ein Verfahren zur Beurteilung des dreidimensionalen Erfassungsbereichs von an einem Gelenk-absaugarm montierten lokalen Erfassungsvorrichtungen;
— ein Verfahren zur Beurteilung des Erfassungsgrads von an einen Gelenkabsaugarm angeschlossenen lokalen Erfassungsvorrichtungen bei isothermer Emission mit geringer Energie sowie zur Beurteilung der Robustheit dieser Vorrichtungen gegenüber Luftwirbeln direkt vor und in der unmittelbaren Umgebung der Erfassungshaube bei auf einem Tisch positionierter Emissionsquelle;
— ein Verfahren zur Ermittlung des dreidimensionalen Arbeitsbereichs, der von an einem Gelenkabsaugarm montierten lokalen Erfassungsvorrichtungen erreichbar ist, durch Messung der möglichen Positionen der Öffnung der Vorrichtung;
— ein Verfahren zur Messung des Druckverlusts und des Geräuschpegels bei der Baumusterprüfung und bei der Inbetriebnahme vor Ort;
— Anweisungen für die Kennzeichnung der Vorrichtung und Empfehlungen hinsichtlich der Benutzer-informationen im Produkthandbuch;
— Anwendungsleitlinien, in denen die Beschränkungen lokaler Erfassungsvorrichtungen mit Gelenkabsaugarm für verschiedene Luftvolumenströme mit Festlegung des Erfassungsbereichs beschrieben werden;
— Leitlinien für die Auswahl, Montage, Inbetriebnahme und Prüfung von Gelenkabsaugarmen und ihren lokalen Absaugsystemen.
Die Norm deckt nur Verfahren zur Produktleistungsprüfung ab. Die Norm enthält keine Verfahren für die Bewertung des Arbeitsschutzes.
Punktquellen mit einer auf die Temperatur, eine Druckentlastung, den Arbeitsablauf oder Ähnliches zurückzuführenden Anfangsgeschwindigkeit werden in dieser Norm nicht behandelt.
Nicht zum Anwendungsbereich gehören Anforderungen an die Filterung und die Auswirkungen einer vollständigen oder teilweisen Rückführung der von einem Gelenkabsaugarm abgesaugten Luft.
Dispositifs d'aspiration locale de laboratoire - Partie 1 : Exigences générales et méthodes d'essais de type pour les bras d'extraction articulés
Le présent document s'applique à un bras articulé d'extraction utilisé en tant que dispositif d'aspiration locale de laboratoire et se composant d'un dispositif de captage spécifique (hotte de réception, d'enceinte ou de captage, tuyère ou écran plat) relié à un bras d'extraction spécifique composé d'un ensemble de conduits articulés servant à déplacer l'air du dispositif de captage à un point de rejet.
La présente norme spécifie :
une méthode pour les essais de type ;
une méthode pour évaluer la zone de captage tridimensionnelle des dispositifs d'aspiration locale montés sur un bras articulé d'extraction ;
une méthode pour évaluer l'efficacité de captage des émissions libérées, dans des conditions isothermes et de faible énergie, de dispositifs d'aspiration locale reliés à un bras articulé d'extraction, et sa robustesse vis-à-vis d'une perturbation de l'air juste devant la hotte de captage et la source de libération positionnée sur une table et à proximité étroite de celles-ci ;
une méthode pour établir l'espace de travail tridimensionnel accessible de dispositifs d'aspiration locale montés sur un bras articulé d'extraction par mesure des positions possibles de l'ouverture du dispositif ;
une méthode pour mesurer la perte de charge et le niveau de bruit dans l'essai de type et lors de la mise en service sur site ;
des instructions pour le marquage du dispositif et des informations recommandées à communiquer aux utilisateurs dans le manuel du produit ;
des recommandations pour l'utilisation décrivant les limitations des dispositifs d'aspiration locale à bras articulé d'extraction pour différents débits d'air établissant la zone de captage ;
des recommandations sur la sélection, l'installation, la mise en service et les essais des bras articulés d'extraction et leurs systèmes de ventilation à aspiration locale.
La norme ne couvre que les méthodes d'essai portant sur la performance des produits. La présente norme ne porte pas sur les méthodes d'évaluation de la santé et de la sécurité au travail.
Les sources ponctuelles avec vitesse initiale dues à la température, à la libération de pression, au processus de travail ou similaires ne sont pas couvertes par la présente norme.
Le domaine d'application ne comprend pas les exigences de filtration et l'impact d'un flux d'air extrait par un bras articulé d'extraction entièrement ou partiellement remis en circulation.
Laboratorijske lokalne odsesovalne naprave - 1. del: Splošne zahteve in metode za preskušanje tipa členkastih odsesovalnih rok
Ta dokument se uporablja za členkasto odsesovalno roko, ki se uporablja kot lokalna odsesovalna naprava v laboratorijih in vključuje napravo za zajem (sesalno napo, napo z ohišjem, napo za zajem, napo s sesalno šobo ali plosko napo), ki je povezana z odsesovalno roko, tj. členkastim vodom za prenos zraka iz naprave za zajem v izpust.
Ta standard določa:
– metodo za tipsko preskušanje;
– metodo za ocenjevanje tridimenzionalnega območja zajemanja lokalnih odsesovalnih naprav, nameščenih na členkasti odsesovalni roki;
– metodo za ocenjevanje učinkovitosti zajema izpusta emisij lokalnih odsesovalnih naprav, povezanih s členkasto odsesovalno roko, ter njihove odpornosti na zračne motnje neposredno pred napo za zajem in virov izpusta ter v njuni bližini;
– metodo za vzpostavitev dosegljivega, tridimenzionalnega delovnega območja lokalnih odsesovalnih naprav, nameščenih na členkasti odsesovalni roki, z merjenjem možnih položajev odpiranja naprave;;
– metodo za merjenje padca tlaka in ravni hrupa v tipskem preskusu;
– navodila za označevanje naprave in priporočeno vsebino informacij za uporabo;
– smernice za uporabo, v katerih so opisane omejitve lokalnih odsesovalnih naprav s členkasto odsesovalno roko za različne stopnje pretoka zraka, s čimer se vzpostavi območje zajema;
– smernice v zvezi z izbiro, namestitvijo, začetkom uporabe in preskušanjem nadzora členkastih odsesovalnih rok ter njihovih lokalnih izpušnih prezračevalnih sistemov.
Področje uporabe ne vključuje zahtev glede filtracije in vpliva popolne ali delne recirkulacije pretoka zraka, ki se odvaja prek členkaste odsesovalne roke.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 16589-1:2023
01-marec-2023
Nadomešča:
SIST-TP CEN/TR 16589:2014
Laboratorijske lokalne odsesovalne naprave - 1. del: Splošne zahteve in metode za
preskušanje tipa členkastih odsesovalnih rok
Laboratory local exhaust devices - Part 1: General requirements and type test methods
for articulated extraction arms
Lokale Absaugeinrichtungen im Labor - Teil 1: Absaugarme mit Gelenken
Dispositifs d'aspiration locale de laboratoire - Partie 1 : Exigences générales et
méthodes d'essais de type pour les bras d'extraction articulés
Ta slovenski standard je istoveten z: EN 16589-1:2022
ICS:
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
SIST EN 16589-1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 16589-1:2023
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SIST EN 16589-1:2023
EN 16589-1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 71.040.10 Supersedes CEN/TR 16589:2013
English Version
Laboratory local exhaust devices - Part 1: General
requirements and type test methods for articulated
extraction arms
Dispositifs d'aspiration locale de laboratoire - Partie 1 : Lokale Absaugeinrichtungen im Labor - Teil 1:
Exigences générales et méthodes d'essais de type pour Absaugarme mit Gelenken
les bras d'extraction articulés
This European Standard was approved by CEN on 21 November 2022.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16589-1:2022 E
worldwide for CEN national Members.
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SIST EN 16589-1:2023
EN 16589-1:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Test room and general test conditions . 10
4.1 Dimension and construction of the test room . 10
4.2 Test room conditions . 10
4.3 Articulated extract arm installation . 10
4.4 Test conditions . 10
4.4.1 General. 10
4.4.2 Setting extract air volume flow rate . 10
4.4.3 Tracer gas . 10
5 Type test methods . 11
5.1 General. 11
5.2 Capture zone measurement . 11
5.2.1 General. 11
5.2.2 Test Equipment. 11
5.2.3 Test Principle . 11
5.2.4 Test procedure . 12
5.3 Capture efficiency and robustness test . 13
5.3.1 Test equipment . 13
5.3.2 Test principle . 13
5.3.3 Test method . 14
5.3.4 Test procedure . 14
5.3.5 Data analysis and results . 16
6 Technical performance . 17
6.1 General. 17
6.2 Pressure measurement. 18
6.3 Sound pressure level . 18
6.4 Sound power level . 18
6.5 Reachable workspace . 18
7 Alarms and indicators . 18
7.1 Airflow alarms . 18
7.2 Capture zone indicator . 18
7.3 Measuring point for airflow control. 19
8 Marking and labelling . 19
9 Product manual . 19
10 Test report . 21
Annex A (informative) Guidance on selection and use of AEA’s . 23
Annex B (informative) Recommendations for commissioning and validation on-site . 28
Bibliography . 29
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EN 16589-1:2022 (E)
European foreword
This document (EN 16589-1:2022) has been prepared by Technical Committee CEN/TC 332 “Laboratory
equipment”, 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 2023, and conflicting national standards shall be
withdrawn at the latest by June 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TR 16589:2013.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
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SIST EN 16589-1:2023
EN 16589-1:2022 (E)
Introduction
Articulated extraction arms are local exhaust devices consisting of capture devices that may be
constructed in a variety of geometric shapes (hoods, nozzles, flat screens etc.) which are connected to or
mounted on extraction arms or arms with flexible joints. They are used for a variety of different
applications in the laboratory where contaminants are encountered. The design of articulated extract
arms for laboratories may differ for different applications.
The ability of articulated extract arms to effectively capture contaminants is subject to a number of
factors. These factors include extract volume flow, capture velocity, capture hood design,
manoeuvrability, position in relation to emission source, user activity, and room conditions.
Due to the fact that the capture efficiency can be affected dramatically by a change in any of the above
conditions, articulated extract arms are only useful for very small pollution sources, or when the pollution
source cannot be reasonably enclosed and has distinct points where the pollution might occur.
The objective of this document is to give information relevant to articulated extraction arms and to
specify type test methods for articulated extraction arms. This document offers assistance in the testing
of articulated extraction arms and in the drafting of user information. It is intended to contribute towards
mutual understanding amongst manufacturers, laboratory designers, users and health and safety
authorities.
The performance data obtained onsite will not necessarily reflect the type test data due to environmental
influences. Prior to use, the performance of the device needs to be assessed to ensure it complies with the
performance benchmarks specified in the risk assessment. It is the responsibility of the user that
appropriate commissioning has been carried out. The extent of the commissioning testing should be
based on a risk assessment.
It is intended to work on further parts of this standard series dealing with commissioning and installation
and on-site testing.
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EN 16589-1:2022 (E)
1 Scope
This document is applicable to articulated extraction arms used as a local exhaust device in laboratories
and comprised of a specific capture device (receiving, enclosing or capture hood, nozzle or flat screen)
connected to ducting to move air from the capture device to discharge.
This document is a product standard. This document covers product performance type test methods.
Occupational health and safety assessments methods are not included in this document.
This document specifies:
• a method to assess the three-dimensional capture zone of an articulated extract arms;
• a method for assessing the isothermal and diffusive emission release capture efficiency of articulated
extract arms and robustness to a challenge of air disturbance directly in front of and in close
proximity to the capture hood and release source positioned on a table;
• a method for establishing the reachable, three-dimensional workspace of articulated extract arms;
• a method for measuring the pressure drop and noise level of articulated extract arms;
• instructions for marking the devices and recommended information in the product manual;
• guidance for use describing the limitations of articulated extract arms for different airflow rates;
• guidance on selection, installation, commissioning, and testing of articulated extract arms and the
associated local exhaust ventilation systems.
The test procedure for capture efficiency and the guidance included in Annex A and B does not apply to
particle sources or point sources which release contaminants with initial velocity of above 0,5 m/s due
to temperature, pressure release, work process or similar.
The scope does not include filtration requirements and impact of fully or partly recirculated airflow
extracted by an articulated extract arm.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1093-4, Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 4:
Capture efficiency of an exhaust system — Tracer method
EN ISO 5167-1:2003, Measurement of fluid flow by means of pressure differential devices inserted in
circular cross-section conduits running full — Part 1: General principles and requirements
EN ISO 11204, Acoustics - Noise emitted by machinery and equipment - Determination of emission sound
pressure levels at a work station and at other specified positions applying accurate environmental
corrections (ISO 11204:2010)
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EN 16589-1:2022 (E)
3 Terms and definitions
For the purposes of this document the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
capture device
equipment designed to capture or collect air pollutants near their source connected directly to a duct or
mounted on an extraction arm
Note 1 to entry: Examples of capture devices are e.g. hood, flat screen, suction nozzle.
3.2
extraction arm
fixed, flexible or articulated ducting connecting the capture device with the main extract air duct
3.3
articulated extraction arm
AEA
articulated extract ducting assembly including capture device
Note 1 to entry: The articulated extraction arm can be moved and positioned so that the capture zone of the hood
is located at the identified hazard release zone. See examples in Figure 1.
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EN 16589-1:2022 (E)
Key
ν schematic capture zone
a
centre point of entry plane
b
duct of capture device
c
duct connecting to main duct
1 main duct
2 articulated extraction arms
3 entry plane
4 capture device
Figure 1 — Example of common designs of capture devices and extraction arms
3.4
capture zone
three-dimensional space in front of the entry plane of a capture device in which the air velocity is greater
than or equal to the minimum air velocity required for effective capture of pollutants
3.5
entry plane
plane touching the outermost parts of the capture device regardless of the shape
Note 1 to entry: A schematic expression of entry plane independent on the shape is given in Figure 1 and 3.
3.6
aspect ratio
ratio of the lengths x and y in the entry plane, with x > y
1 1
Note 1 to entry: Schematic layout of an ellipse capture device see Figure 2. The aspect ratio is 1 for a circular
device and greater than 1 for other shapes.
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EN 16589-1:2022 (E)
Key
x0, y0, z0 centre point of the entry plane and origin for the measurement point co-ordinates
x length of the entry plane of the capture device in the x-direction (x > y )
1 1 1
y length of the entry plane of the capture device in the y-direction (x > y )
1 1 1
Figure 2 — Schematic layout of an ellipse capture device
3.7
measurement plane
two-dimensional area in front of the capture device and parallel to the entry plane
Note 1 to entry: Distance from the measuring position to the entry plane (L ) is specified in the air velocity
mp
measurement procedure. A schematic layout showing position of the measurement plane in relation to the entry
plane is included in Figure 3.
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EN 16589-1:2022 (E)
Key
1 Capture device
2 Duct of capture device
3 Entry plane
4 Measurement plane
5 Center line
D Internal diameter of the duct of the capture device
Lmp Measurement plane distance from the capture device entry plane specified in the air velocity measurement
procedure
Figure 3 — Schematic layout showing position of the measurement plane in relation to the entry
plane
3.8
reachable workspace
three-dimensional workspace in which the positioning of the entry plane is achievable with movement
of an articulated extraction arm
Note 1 to entry: The capture zone extract volume flow can vary with changes in the articulated extraction arm
configuration.
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EN 16589-1:2022 (E)
4 Test room and general test conditions
4.1 Dimension and construction of the test room
The test room shall consist of an enclosure of cuboid shape, constructed of suitable materials. The internal
width and length shall be not less than 4,0 m and the ceiling height shall be not less than 2,7 m. The ceiling
and floor shall be level and the room shall be devoid of internal supports, internal walls or other obstacles
to the airflow.
The test zone boundary shall extend approximately 1,5 m from the capture device opening in all
directions and over the full room height.
NOTE If larger arms or arms with higher air volume flow rates are tested, a larger room may be necessary.
4.2 Test room conditions
The room air temperature shall be (23 ± 3) °C. The make-up air temperature during measurements shall
be room air temperature ± 1 °C. Temperature gradients shall be avoided to the greatest possible extent.
The make-up air shall be supplied at a distance greater than 2 m from the front of the capture device.
Room extract air shall be extracted symmetrically on the opposite side to the make-up air supply and
from outside the test zone. The air speed shall be less than 0,10 m/s at the test zone boundaries. Care
shall be taken regarding uncontrolled air streams and draughts entering the test room.
Any device the temperature of which exceeds 40 °C, shall be located outside the test zone boundaries.
The air extracted from the test room shall be discharged to atmosphere in such a way as to prevent its re-
entrainment in the make-up air.
4.3 Articulated extract arm installation
The articulated extract arm shall be installed centrally in the test room.
The test shall be carried out on articulated extract arm installed in the test room in accordance with the
manufacturer's installation instructions.
4.4 Test conditions
4.4.1 General
No person other than the operator(s) shall be present in the test room during the measurements. No
person shall remain in the test zone during the measurements. There shall be no unnecessary
obstructions or equipment within the test zone.
Windows and doors of the test room shall remain closed during measurements.
4.4.2 Setting extract air volume flow rate
Tests shall be performed with extract air volume flow rates in the capture device duct corresponding to
set air velocities of 5 m/s, 9 m/s, 12 m/s and 15 m/s and higher at position b in Figure 1. Air velocity of
15 m/s and higher can be excluded if specified by the manufacturer. The flow rate shall be measured in
the extract duct in accordance with EN ISO 5167-1:2003. The uncertainty of measurement shall not
exceed ± 5 %.
The calculated volume flow rate depends on the dimension of the articulated extraction arm.
4.4.3 Tracer gas
The tracer gas shall be nitrooxide N2O, if allowed in national regulation, or equivalent.
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EN 16589-1:2022 (E)
5 Type test methods
5.1 General
Every combination of extraction arm and capture device is considered as unique type of articulated
extraction arm. The type tests are for a specific combination of extraction arm and capture device. Other
combinations shall be tested separately.
5.2 Capture zone measurement
5.2.1 General
The articulated extract arm shall be tested by measuring the air velocity field created in front of the entry
plane at specified distances from the capture device opening.
5.2.2 Test Equipment
The following test equipment shall be used:
• Low velocity anemometer, omnidirectional, suitable for measuring air velocities in the range
0,05 m/s to 3 m/s with an accuracy of 0,02 m/s ± 5 % of the reading or better, with a response
time less than or equal to 1 s and having a calibration that is traceable to national standards.
• Flow measuring device, or other suitable device, capable of measuring air flow rates in
accordance with EN ISO 5167-1 with a maximum uncertainty of ± 5 % and having a calibration
that is traceable to national standards.
• A measuring device, suitable for measuring the linear and angular distances used in the test with
an uncertainty of ± 1 mm.
5.2.3 Test Principle
Tests shall be performed to determine the three-dimensional zones where the air has a velocity
of > 0,2 m/s and > 0,4 m/s in front of the capture device.
Measurements shall be made in measurement planes parallel to the entry plane of the capture device (see
Figure 3). For each measurement plane the distance from the centre line of the capture device to the point
where the air velocity is 0,2 m/s and 0,4 m/s is measured in both the x- and y-direction.
The results shall be described as a table with distances from the centre line in x- and y-direction verses
L (see Figure 3) for each measurement plane. The capture zone is determined with main air flow rates
mp
corresponding to the air velocity of 4.4.2 in the duct of the capture device (see key b in Figure 1).
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Dimensions in millimetres
Key
0,2 m/s
0,4 m/s
Figure 4 — Schematic layout showing capture velocity test measuring points
5.2.4 Test procedure
Set up the articulated extract arm under the conditions specified in Clause 4.
Measurement planes parallel to the entry plane of the capture device are considered. The first
measurement plane shall be at 20 mm distance (L in Figure 3) from the capture device entry plane.
mp
There shall be another measurement plane repeated for each 20-mm distance from the entry plane (see
Figure 4) until < 0,2 m/s and < 0,4 m/s are measured in the centre line of the capture device. For smaller
capture devices the distances can be reduced to 10 mm. For articulated extract arms with a duct
diameter ≥ 100 mm some of the measuring points can be excluded if noted in the test report.
Adjust the air flow rate through the capture device to the test flow in accordance with 4.4.2.
Measure the volume air flow rate at the beginning and at the end of the test using the flow meter (5.2.2.).
In each measurement plane move the anemometer probe in x- and y-directions to the prespecified
capture velocity value of 0,2 m/s and 0,4 m/s (see Figure 4). Measure and record the air velocity at that
point over a period of 1 min using the low velocity anemometer (5.2.2) and measure the distance from
the centre line. For circular symmetric capture devices (x = y , aspect ratio = 1) measurements only need
1 1
to be made in either the x- or y-direction. For other symmetric shaped capture devices (x > y )
1 1
measurements shall be made in both the x- and y-direction. For other shapes of capture devices
measurements shall be made in four directions from the centre line.
Repeat the procedures with the air flow rate adjusted to the other test flows in accordance with 4.4.2.
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5.3 Capture efficiency and robustness test
5.3.1 Test equipment
5.3.1.1 Moving plate
A flat rectangular plate with height of (1,90 ± 0,01) m, width of (0,40 ± 0,01) m and thickness of
(20 ± 5) mm with rounded edges (radius 10 mm) shall be mounted in front of the longest side of the test
table with the articulated extract arm. The plate shall be mounted vertically and 90 degrees to the table
front. The plate shall be movable during the capture efficiency test with a speed of (1,0 ± 0,1) m/s across
the front of the table.
5.3.1.2 Gas analyser
−8
The gas analyser including the connected means of recording shall have a detection level of 10 or less
volume fraction of the tracer gas.
5.3.1.3 Flow meter
Flow meter, or other suitable device, capable of measuring air flow rates with a maximum uncertainty
of ± 5 % and having a calibration that is traceable to national standards.
5.3.1.4 Test table
A table with the minimum dimensions of 1 500 mm × 1000 mm and with a height of minimum 750 mm
above the floor level, placed with the centre of the table in the centre of the test room, shall be used for
the capture efficiency tests.
5.3.2 Test principle
The articulated extract arm shall be tested by measuring the capture efficiency at three examples of use.
The capture efficiency η of the articulated extract arm is measured with and without disturbance in
c
accordance with EN 1093-4.
The principle of the test method consists of emitting a tracer gas, to simulate a low energy release at a
flow rate (q ) and measuring the tracer gas flowrate in the airflow collected by the articulated extract arm
e
(q ). During the test a disturbance will be induced to challenge the robustness of the capture efficiency at
c
the test extract air flow rate.
The capture efficiency without disturbance η , as a percentage, is calculated by Formula (1):
c
q
c
(1)
η × 100
c
q
e
The capture efficiency can also be expressed in terms of tracer gas concentrations in accordance with
Formula (2):
CC−
3 1
(2)
η × 100
c
C − C
2 1
where
C is the mean background concentration of the tracer gas before the test.
1
C is the mean duct concentration of the tracer gas when emitted in the duct.
2
C is the mean duct concentration of the tracer gas when emitted at the test position.
3
13
=
=
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EN 16589-1:2022 (E)
The capture efficiency during disturbance can be expressed in terms of tracer gas concentration
according to Formula (3):
CC−
d4
(3)
η × 100
d
C − C
2 1
where
C is the mean background concentration of the tracer gas after the test.
4
C is the mean duct concentration of the tracer gas when emitted at the test position during disturbance.
d
5.3.3 Test method
The tracer gas shall be induced through a sphere with a diameter of 40 mm. The sphere shall be
perforated with 14 nozzles. The diameter of each nozzle shall be 1,0 mm.
Test shall be performed with the tracer gas induced through the sphere 50 mm above the test table. The
sphere shall be placed in the middle of the table and the air volume flow rate through the local exhaust
device is to be adjusted to the test flow in accordance with 4.4.2.
...
SLOVENSKI STANDARD
oSIST prEN 16589-1:2021
01-september-2021
Laboratorijske lokalne odsesovalne naprave - 1. del: Členkasta izvlečna roka
Laboratory local exhaust devices - Part 1: Articulated extraction arm
Lokale Absaugeinrichtungen im Labor - Teil 1: Absaugarme mit Gelenken
Dispositifs d'aspiration locale de laboratoire - Partie 1 : Bras articulé d'extraction
Ta slovenski standard je istoveten z: prEN 16589-1
ICS:
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
oSIST prEN 16589-1:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 16589-1:2021
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oSIST prEN 16589-1:2021
DRAFT
EUROPEAN STANDARD
prEN 16589-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2021
ICS 71.040.10 Will supersede CEN/TR 16589:2013
English Version
Laboratory local exhaust devices - Part 1: Articulated
extraction arm
Dispositifs d'aspiration locale de laboratoire - Partie 1 : Lokale Absaugeinrichtungen im Labor - Teil 1:
Bras articulé d'extraction Absaugarme mit Gelenken
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 332.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16589-1:2021 E
worldwide for CEN national Members.
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Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 6
4 Test room and general test conditions . 10
4.1 Dimension and construction of the test room . 10
4.2 Test room conditions . 10
4.3 Articulated extract arm installation . 10
4.4 Test conditions . 10
4.4.1 General. 10
4.4.2 Setting extract air volume flow rate . 10
5 Type test methods . 11
5.1 General. 11
5.2 Capture zone measurement . 11
5.2.1 General. 11
5.2.2 Test Equipment. 11
5.2.3 Test Principle . 11
5.2.4 Test procedure . 12
5.3 Capture efficiency and robustness test . 13
5.3.1 Test equipment . 13
5.3.2 Test principle . 13
5.3.3 Test method . 14
5.3.4 Test procedure . 14
5.3.5 Data analysis and results . 16
6 Technical performance . 17
6.1 General. 17
6.2 Pressure measurement. 18
6.3 Sound pressure level . 18
6.4 Sound power level . 18
6.5 Reachable workspace . 18
7 Alarms and indicators . 18
7.1 Airflow alarms . 18
7.2 Capture zone indicator . 18
7.3 Airflow control . 19
8 Marking and labelling . 19
9 Product manual . 19
10 Test report . 21
Annex A (informative) Guidance on selection and use of AEA’s. 22
Annex B (informative) Recommendations for commissioning and validation on-site . 28
Bibliography . 29
2
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European foreword
This document (prEN 16589-1:2021) has been prepared by Technical Committee CEN/TC 332
“Laboratory equipment”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede CEN/TR 16589:2013.
3
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Introduction
Articulated extraction arms are local exhaust devices consisting of capture devices that may be
constructed in a variety of geometric shapes (hoods, nozzles, flat screens etc.) which are connected to or
mounted on extraction arms or arms with flexible joints. They are used for a variety of different
applications in the laboratory where contaminants are encountered. The design of articulated extract
arms for laboratories may differ for different applications.
The ability of capture devices to capture contaminants is subject to a number of factors. These factors are
extract volume flow, capture velocity, capture hood design, manoeuvrability, position in relation to
emission source, user activity, air speed etc. The capture ability is rapidly decreased with increased
distance to the emission source. Higher air velocity in the opening of the device improves the capture
ability but commonly results in increased noise level and pressure drop of the capture device and extract
arm.
Good information to the user on how to use the device as well as information about the limitations of the
device are essential for safety and health in the laboratories.
The performance values specified in this standard for type testing are considered appropriate to
determine the products compliance with the standard. Performance values on site may vary due to local
conditions and should be assessed as part of a specific risk assessment.
Articulated extract arms are useful for very small emission sources or when the emission source is too
large to reasonably be enclosed and has distinct points where the pollution might occur like a HPLC (High
pressure liquid chromatograph).
4
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1 Scope
This document applies to an articulated extraction arm used as a local exhaust device in laboratories and
comprised of a specific capture device (receiving, enclosing or capture hood, nozzle or flat screen)
connected to a specific extraction arm which is articulated ducting to move air from the capture device
to discharge.
This document specifies:
• a method for type testing;
• a method to assess the three-dimensional capture zone of local exhaust devices mounted on an
articulated extract arm;
• a method for assessing the isothermal and low energy emission release capture efficiency of local
exhaust devices connected to an articulated extract arm and its robustness to a challenge of air
disturbance directly in front of and in close proximity to the capture hood and release source
positioned on a table;
• a method for establishing the reachable, three-dimensional workspace of local exhaust devices
mounted on an articulated extract arm by measuring the possible positions of the opening of the
device;
• a method for measuring the pressure drop and noise level in the type test and at onsite
commissioning;
• instructions for marking the device and recommended information to transfer to users in the product
manual;
• guidance for use describing the limitations of local exhaust devices with articulated extract arm for
different airflow rates establishing the capture zone;
• guidance on selection, installation, commissioning, and testing of articulated extract arms and their
local exhaust ventilation systems.
The standard covers only product performance test methods. Occupational health and safety assessments
methods are not included in this standard.
Point sources with initial velocity due to temperature, pressure release, work process or similar are not
covered by this standard.
The scope does not include filtration requirements and impact of fully or partly recirculated airflow
extracted by an articulated extract arm.
5
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2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1093-4, Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 4:
Capture efficiency of an exhaust system — Tracer method
EN 14175-1, Fume cupboards - Part 1: Vocabulary
EN ISO 11204, Acoustics - Noise emitted by machinery and equipment - Determination of emission sound
pressure levels at a work station and at other specified positions applying accurate environmental
corrections (ISO 11204)
3 Terms and definitions
For the purposes of this document, EN 14175-1 and the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
capture device
equipment designed to capture or collect air pollutants at source connected directly to a duct or mounted
on an extraction arm
Note 1 to entry: Examples of capture devices are e.g. hood, flat screen, suction nozzle.
3.2
extraction arm
fixed, flexible or articulated ducting connecting the capture device with the main extract air duct
3.3
articulated extraction arm
AEA
articulated extract ducting assembly including capture device
Note 1 to entry: The articulated extraction arm can be moved and positioned so that the capture zone of the hood
is located at the identified hazard release zone. See examples in Figure 1.
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Key
ν schematic capture zone
a
centre point of entry surface
b
duct of capture device
c
duct connecting to main duct
1 main duct
2 articulated extraction arms
3 entry surface
4 capture device
Figure 1 — Example of common designs of capture devices and extraction arms
3.4
capture zone
three-dimensional space in front of the entry surface of a capture device in which the air velocity is
greater than or equal to the minimum air velocity required for effective capture of pollutants
3.5
entry surface
plane touching the outermost parts of the capture device regardless of the shape
Note 1 to entry: A schematic expression of entry surface independent on the shape is given in Figure 1 and 3.
3.6
aspect ratio
ratio of the lengths x and y in the entry surface, with x > y
1 1
Note 1 to entry: Schematic layout of an ellipse capture device see Figure 2. The aspect ratio is 1 for a circular
device and greater than 1 for other shapes.
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Key
x , y , z centre point of the entry surface and origin for the measurement point co-ordinates
0 0 0
x1 length of the entry surface of the capture device in the x-direction (x1 > y1)
y length of the entry surface of the capture device in the y-direction (x > y )
1 1 1
Figure 2 — Schematic layout of an ellipse capture device
3.7
measurement plane
two-dimensional area in front of the capture device and parallel to the entry surface)
Note 1 to entry: Distance from the measuring position to the entry surface (Lmp) is specified in the air velocity
measurement procedure. A schematic layout showing position of the measurement plane in relation to the entry
surface is included in Figure 3.
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Key
1 Capture device
2 Duct of capture device
3 Entry surface
4 Measurement plane
5 Center line
D Internal diameter of the duct of the capture device
Lmp Measurement plane distance from the capture device entry surface specified in the air velocity
measurement procedure
Figure 3 — Schematic layout showing position of the measurement plane in relation to the entry
surface
3.8
reachable workspace
three-dimensional workspace in which the specified capture zone is achievable with movement of an
articulated extraction arm
Note 1 to entry: The capture zone extract volume flow can vary with changes in the articulated extraction arm
configuration.
3.9
working zone
space where the activity or process generates the contaminant cloud that should be removed by the
capture device
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4 Test room and general test conditions
4.1 Dimension and construction of the test room
The test room shall consist of an enclosure of cuboid shape, constructed of suitable materials, within an
existing building or laboratory. The internal width and length shall be not less than 4,0 m and the ceiling
height not less than 2,7 m. The ceiling and floor shall be level and the room shall be devoid of internal
supports, internal walls or other obstacles to the airflow.
The test zone boundary shall extend approx. 1,5 m from the capture device opening in all directions and
over the full room height.
4.2 Test room conditions
The room air temperature shall be (23 ± 3) °C. The make-up air temperature during measurements shall
be room air temperature ± 1 °C. Temperature gradients shall be avoided to the greatest possible extent.
The make-up air shall be supplied at a distance greater than 2 m from the front of the capture device.
Room extract air shall be extracted symmetrically on the opposite side to the make-up air supply and
from outside the test zone. The air speed shall be less than 0,05 m/s at the test zone boundaries. Care
shall be taken regarding uncontrolled air streams and draughts entering the test room.
Any device the temperature of which exceeds 40 °C, shall be located outside the test zone boundaries.
The air extracted from the test room shall be discharged to atmosphere in such a way as to prevent its re-
entrainment in the make-up air.
4.3 Articulated extract arm installation
The articulated extract arm shall be installed centrally in the test room.
The test shall be carried out on articulated extract arm installed in the test room in accordance with the
manufacturer's installation instructions.
4.4 Test conditions
4.4.1 General
No person other than the operator(s) shall be present in the test room during the measurements. No
person shall remain in the test zone during the measurements. There shall be no unnecessary
obstructions or equipment within the test zone.
Windows and doors of the test room shall remain closed during measurements.
4.4.2 Setting extract air volume flow rate
Tests shall be performed with extract air volume flow rates in the capture device duct corresponding to
set air velocities of 5 m/s, 9 m/s, 12 m/s and 15 m/s and higher at position b in Figure 1. Air velocity of
15 m/s and higher can be excluded if specified by the manufacturer. The flow rate shall be measured in
the extract duct in accordance with EN ISO 5167-1:2003. The uncertainty of measurement shall not
exceed ± 5 %.
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5 Type test methods
5.1 General
Every combination of extraction arm and capture device is considered as unique type of articulated
extraction arm. The type tests are for a specific combination of extraction arm and capture device. Other
combinations shall be tested separately.
5.2 Capture zone measurement
5.2.1 General
The articulated extract arm shall be tested by measuring the air velocity field created in front of the entry
surface at defined distances from the capture device opening.
5.2.2 Test Equipment
Low velocity anemometer, omnidirectional, suitable for measuring air velocities in the range 0,05 m/s to
3 m/s with an accuracy of 0,02 m/s ± 5 % of the reading or better, with a response time less than or equal
to 1 s and having a calibration that is traceable to national standards.
Flow measuring device, or other suitable device, capable of measuring air flow rates in accordance with
EN ISO 5167-1 with a maximum uncertainty of ± 5 % and having a calibration that is traceable to national
standards.
Measure, suitable for measuring distances with an uncertainty of ± 1 mm.
5.2.3 Test Principle
Tests are performed to determine the three-dimensional zones where the air has a velocity of > 0,2 m/s
and > 0,4 m/s in front of the capture device. (With a capture velocity of 0,2 m/s the capture efficiency can
be expected to be higher than 97 % with isothermal conditions and disturbing air currents < 0,2 m/s at
recommended sidewise use, see Annex A, Figure A.3 and A.4)
Measurements are made in measurement planes parallel to the entry surface of the capture device (see
Figure 3). For each measurement plane the distance from the centre line of the capture device to the point
where the air velocity is 0,2 m/s and 0,4 m/s is decided in both the x- and y-direction.
The results are described as a table with distances from the centre line in x- and y-direction verses L
mp
(see Figure 3) for each measurement plane. The capture zone is determined with main air flow rates
corresponding to the air velocity of 4.4.2 in the duct of the capture device (see key b in Figure 1).
11
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Dimensions in millimetres
Key
0,2 m/s
0,4 m/s
Figure 4 — Schematic layout showing Capture velocity test measuring points
5.2.4 Test procedure
Set up the articulated extract arm under the conditions specified in Clause 4.
Measurement planes parallel to the entry surface of the capture device are considered. The first
measurement plane will be at 20 mm distance (L in Figure 3) from the capture device entry plane.
mp
There will be another measurement plane repeated for each 20-mm distance from the entry surface (see
Figure 4) until < 0,2 m/s and < 0,4 m/s are measured in the centre line of the capture device. For
articulated extract arms with a duct diameter ≥ 100 mm some of the measuring points can be excluded if
noted in the test report.
Adjust the air flow rate through the capture device to the test flow according to 4.4.2.
Measure the volume air flow rate at the beginning and at the end of the test using the flow meter (5.2.2.).
In each measurement plane move the anemometer probe in x- and y-directions to the predefined capture
velocity value of 0,2 m/s and 0,4 m/s (see Figure 4). Measure and record the air velocity at that point
over a period of 1 min using the low velocity anemometer (5.2.2) and measure the distance from the
= y , aspect ratio = 1) measurements only need to
centre line. For circular symmetric capture devices (x1 1
be made in either the x- or y-direction. For other symmetric shaped capture devices (x > y )
1 1
measurements need to be made in both the x- and y-direction. For other shapes of capture devices
measurements need to be made in four directions from the centre line.
Repeat the procedures with the air flow rate adjusted to the other test flows according to 4.4.2.
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5.3 Capture efficiency and robustness test
5.3.1 Test equipment
5.3.1.1 Moving plate
A flat rectangular plate with height of (1,90 ± 0,01) m, width of (0,40 ± 0,01) m and thickness of
(20 ± 5) mm with rounded edges (radius 10 mm) shall be mounted in front of the longest side of the test
table with the articulated extract arm. The plate shall be mounted vertically and 90 degrees to the table
front. The plate shall be movable during the capture efficiency test with a speed of (1,0 ± 0,1) m/s across
the front of the table.
5.3.1.2 Gas analyser
−8
The gas analyser including the connected means of recording shall have a detection level of 10 or less
volume fraction of the tracer gas.
5.3.1.3 Flow meter
Flow meter, or other suitable device, capable of measuring air flow rates with a maximum uncertainty
of ± 5 % and having a calibration that is traceable to national standards.
5.3.1.4 Test table
A table with the minimum dimensions of 1 500 mm × 1000 mm and with a height of minimum 750 mm
above the floor level, placed with the centre of the table in the centre of the test room, shall be used for
the capture efficiency tests.
5.3.2 Test principle
The articulated extract arm shall be tested by measuring the capture efficiency at three examples of use.
The capture efficiency η of the articulated extract arm is measured with and without disturbance in
c
accordance with EN 1093-4.
The principle of the test method consists of emitting a tracer gas, to simulate a low energy release at a
flow rate (q ) and measuring the tracer gas flowrate in the airflow collected by the articulated extract arm
e
(q ). During the test a disturbance will be induced to challenge the robustness of the capture efficiency at
c
the test extract air flow rate.
The capture efficiency without disturbance η , as a percentage, will be:
c
q
c
(1)
η × 100
c
q
e
The capture efficiency can also be expressed in terms of tracer gas concentrations as:
CC−
3 1
(2)
η × 100
c
C − C
2 1
where
C is the mean background concentration of the tracer gas before the test.
1
C is the mean duct concentration of the tracer gas when emitted in the duct.
2
C is the mean duct concentration of the tracer gas when emitted at the test position.
3
13
=
=
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The capture efficiency during disturbance can be expressed in terms of tracer gas concentration as:
CC−
d4
(3)
η ×100
d
C − C
2 1
where
C is the mean background concentration of the tracer gas after the test.
4
C is the mean duct concentration of the tracer gas when emitted at the test position during disturbance.
d
5.3.3 Test method
The tracer gas shall be induced through a sphere with a diameter of 40 mm. The sphere shall be
perforated with 14 nozzles. The diameter of each nozzle shall be 1,0 mm.
Test shall be performed with the tracer gas induced through the sphere 50 mm above the test table. The
sphere shall be placed in the middle of the table and the air volume flow rate through the local exhaust
device is to be adjusted to the test flow according to 4.4.2.
The capture device of the articulated extract arm shall be placed with the entry surface X mm from the
sphere. There are three test cases A, B and C.
In test case A the capture device of the articulated extract arm is placed on the table with the outermost
parts of the capture device touching the surface of the table. The centre line of the capture device is
perpendicular to the longest side of the table and parallel to the surface of the table.
In test case B the articulated extract arm is placed in the air with the centre line of the capture device at
a 45-degree angle towards the surface of the table and perpendicular to the longest side of the test table.
In test case C the articulated extract arm is placed in the air with the centre line of the capture device
perpendicular to the surface of the table.
The tracer gas shall be induced, and the capture efficiency measured according to EN 1093-4 for X = D,
2 × D, 3 × D, 4 × D and 5 × D (where X = the distance in Figure 5, 6, and 7, and D = the diameter of the duct
of the capture device, see Figure 3)). Additional distances (X) can be tested on request from the
manufacturer. During the test, the movable plate is started and passes the Table 6 times with 30 s
intervals. The traverse of the plate shall extend for min. 600 mm on each side beyond the edge of the
table.
The test shall be repeated for other test flows according to 4.4.2.
5.3.4 Test procedure
Set up the articulated extraction arm and test under the test conditions specified in Clause 4 and 5.3.3.
The movable plate shall be mounted with the lowest edge 200 mm ± 5 mm above the floor and with the
edge closest to the Table (400 ± 5) mm from the table.
Connect the articulated extraction arm to the extract system. Switch on the extract air system and adjust
the con
...
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