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: Allgemeine Anforderungen und Baumusterprüfverfahren für Absaugarme mit Gelenken

Dieses Dokument ist anzuwenden für Gelenkabsaugarme, die als lokale Absaugvorrichtungen in Laboratorien verwendet werden und die aus einer speziellen Erfassungsvorrichtung (Aufnahme-, Umschließungs- oder Auffanghaube, Stutzen oder Flachschirm) bestehen, die mit einer Abluftleitung für den Transport der Luft von der Erfassungsvorrichtung zum Luftaustritt verbunden ist.
Bei diesem Dokument handelt es sich um eine Produktnorm. Dieses Dokument deckt Baumusterprüfverfahren für die Produktleistungsfähigkeit ab. Methoden zur Bewertung der Gesundheit und Sicherheit am Arbeitsplatz sind in diesem Dokument nicht enthalten. Dieses Dokument legt Folgendes fest:
—   ein Verfahren zur Beurteilung des dreidimensionalen Erfassungsbereichs von Gelenkabsaugarmen;
—   ein Verfahren zur Beurteilung des Erfassungsgrads von Gelenkabsaugarmen bei isothermer und diffuser Emission sowie zur Beurteilung der Robustheit dieser Vorrichtungen gegenüber Luftwirbeln direkt vor und in der unmittelbaren Umgebung der Erfassungshaube bei auf einem Tisch positionierter Emissions¬quelle;
—   ein Verfahren zur Bestimmung des erreichbaren dreidimensionalen Arbeitsbereichs von Gelenk-absaugarmen;
—   ein Verfahren zur Messung des Druckverlusts und des Geräuschpegels von Gelenkabsaugarmen;
—   Anweisungen für die Kennzeichnung der Vorrichtungen und Empfehlungen hinsichtlich der Benutzer¬informationen im Produkthandbuch;
—   Anwendungsempfehlungen, in denen die Beschränkungen von Gelenkabsaugarmen für verschiedene Luft¬volumenströme beschrieben werden;
—   Empfehlungen für die Auswahl, Montage, Inbetriebnahme und Prüfung von Gelenkabsaugarmen und den zugehörigen lokalen Absaugsystemen.
Das Verfahren für die Prüfung des Erfassungsgrads und die Empfehlungen in Anhang A und Anhang B gelten nicht für Partikelquellen oder Punktquellen, die Verunreinigungen aufgrund von Temperatur, Druckentlastung, Arbeitsablauf oder Ähnlichem mit einer Anfangsgeschwindigkeit von mehr als 0,5 m/s freisetzen.
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

General Information

Status

Published

Publication Date

30-Mar-2023

ICS

71.040.10 - Chemical laboratories. Laboratory equipment

Technical Committee

CEN/TC 332 - Laboratory equipment

Drafting Committee

CEN/TC 332/WG 4 - Fume cupboards

Current Stage

6060 - Definitive text made available (DAV) - Publishing

Start Date

21-Dec-2022

Due Date

22-Nov-2022

Completion Date

21-Dec-2022

Ref Project

SIST EN 16589-1:2023 - Laboratory local exhaust devices - Part 1: General requirements and type test methods for articulated extraction arms

Relations

Replaces

CEN/TR 16589:2013 - Laboratory installations - Capture devices with articulated extract arm

Effective Date

28-Dec-2022

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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

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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SIST EN 16589-1:2023
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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SIST EN 16589-1:2023
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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SIST EN 16589-1:2023
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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SIST EN 16589-1:2023
EN 16589-1:2022 (E)
Key
ν schematic capture zone
centre point of entry plane
duct of capture device
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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SIST EN 16589-1:2023
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

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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SIST EN 16589-1:2023
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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SIST EN 16589-1:2023
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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SIST EN 16589-1:2023
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

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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SIST EN 16589-1:2023
EN 16589-1:2022 (E)
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.

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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SIST EN 16589-1:2023
EN 16589-1:2022 (E)
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

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

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

(q ). During the test a disturbance will be induced to challenge the robustness of the capture efficiency at

the test extract air flow rate.

The capture efficiency without disturbance η , as a percentage, is calculated by Formula (1):

(1)
η × 100

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
2 1
where
C is the mean background concentration of the tracer gas before the test.
C is the mean duct concentration of the tracer gas when emitted in the duct.

C is the mean duct concentration of the tracer gas when emitted at the test position.

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SIST EN 16589-1:2023
EN 16589-1:2022 (E)

The capture efficiency during disturbance can be expressed in terms of tracer gas concentration

according to Formula (3):
CC−
(3)
η × 100
C − C
2 1
where
C is the mean background concentration of the tracer gas after the test.

C is the mean duct concentration of the tracer gas when emitted at the test position during disturbance.

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

worldwide for CEN national Members.
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oSIST prEN 16589-1:2021
prEN 16589-1:2021 (E)
Contents Page

European foreword ............................................................................................................................................ 3

1 Scope .......................................................................................................................................................... 5

2 Normative references .......................................................................................................................... 6