CEN/TR 16589:2013

SLOVENSKI STANDARD
01-januar-2014
Laboratorijska oprema - Naprava za zajem z gibljivo roko
Laboratory installations - Capture devices with articulated extract arm
Laboreinrichtungen - Absaugvorrichtungen mit beweglichem Arm
Installation de laboratoire - Dispositif de capture avec bras articulé d'extraction
Ta slovenski standard je istoveten z: CEN/TR 16589:2013
ICS:
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL REPORT
CEN/TR 16589
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
October 2013
ICS 71.040.10
English Version
Laboratory installations - Capture devices with articulated extract
arm
Installation de laboratoire - Dispositif de capture avec bras Laboreinrichtungen - Absaugvorrichtungen mit
articulé d'extraction beweglichem Arm

This Technical Report was approved by CEN on 10 September 2013. It has been drawn up by the Technical Committee CEN/TC 332.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 16589:2013: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 General description .4
3 Applications and installation .6
4 Manufacturers or suppliers .7
5 Performance metrics .7
6 Use .8
6.1 Routine use .8
6.2 Maintenance .8
6.3 Training .8
Bibliography .9

Foreword
This document (CEN/TR 16589:2013) has been prepared by Technical Committee CEN/TC 332 “Laboratory
equipment”, the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
1 Scope
This Technical Report gives guidance regarding the selection, specification, installation and use of capture
devices with articulated extract arm (abbreviated: AEAs) in laboratories. The informative material provided
includes the general concept of AEAs, the variety of sub-types available, system installation issues,
performance metrics and operational factors such as use, maintenance and training.
2 General description
Increasingly, capture devices with extract arm (known by a variety of names, e.g. “elephant trunks”, “snorkels”,
“flexible exhausts” etc.) have been installed in laboratories mainly for the purpose of evacuating contaminants
at source. They are used in low-hazard situations such as reduction of heat emitted by lab devices or capture
of emissions, e.g. from HPLC equipment or in similar applications.
The capture performance of AEAs is largely dependent of the (spatial) relationship between the source of the
gas, fume, vapour or dust requiring capture and the inlet hood (capture device) of an AEA. Capture devices
with extract arms are for that reason only useful for example for very small pollution sources or when the
pollution source is too large to reasonably be enclosed and has distinct points where the pollution might occur
like a HPLC. There are today no available universal, readily-applied and normalised test methodologies for
AEA's, although smoke is useful in visualising flows. For this reason care shall be taken in the selection,
installation, and, critically, in-use arrangement of AEAs (as described in Clause 6). Some information can be
found in VDI 2262 Part 4 (see Bibliography, [1]).
AEAs are available in a number of formats, a selection of which is illustrated in the diagrams that follow.

Key
1 spherical joints
2 rigid ductwork
3 inlet hood
4 exhaust
Key
5 bench top
1 joints from flexible ductwork
2 rigid ductwork
Figure 1 — Rigid ducts with spherical joints
exhausting at high level 3 inlet hood
4 exhaust
5 bench top
Figure 2 — Rigid ducts with flexible joints
exhausting at high level
Key
Key
1 articulated support frame
1 joints from flexible ductwork
2 flexible ductwork
2 rigid ductwork
3 inlet hood
3 inlet hood
4 exhaust
4 exhaust
5 bench top
5 bench top
Figure 3 — Flexible ductwork exhausting at
Figure 5 — Rigid ducts with flexible joints
high level
exhausting at low level
Key
1 flexible ductwork
2 inlet hood
3 exhaust
Key
4 bench top
1 spherical joints
2 rigid ductwork
Figure 6 — Flexible ductwork exhausting at low
level
3 inlet hood
4 exhaust
5 bench top
Figure 4 — Rigid ducts with spherical joints
exhausting at low level
The design shown in Figure 6 can also be used with high level exhaust systems, in which case the flexible
duct merely hangs from ceiling level. The examples shown above relate to the most common approaches of
mounting from above (high level) or bench-mounting. Further alternatives include sidewall mounting a
...