SIST EN ISO 29464:2019

SLOVENSKI STANDARD
01-december-2019
Nadomešča:
SIST EN 14799:2007
Čiščenje zraka in drugih plinov - Terminologija (ISO 29464:2017)
Cleaning of air and other gases - Terminology (ISO 29464:2017)
Reinigung von Luft und anderen Gasen - Terminologie (ISO 29464:2017)
Épuration de l'air et autres gaz - Terminologie (ISO 29464:2017)
Ta slovenski standard je istoveten z: EN ISO 29464:2019
ICS:
01.040.13 Okolje. Varovanje zdravja. Environment. Health
Varnost (Slovarji) protection. Safety
(Vocabularies)
13.040.99 Drugi standardi v zvezi s Other standards related to air
kakovostjo zraka quality
23.120 Zračniki. Vetrniki. Klimatske Ventilators. Fans. Air-
naprave conditioners
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 29464
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 01.040.91; 91.140.30 Supersedes EN 14799:2007
English Version
Cleaning of air and other gases - Terminology (ISO
29464:2017)
Épuration de l'air et autres gaz - Terminologie (ISO Reinigung von Luft und anderen Gasen - Terminologie
29464:2017) (ISO 29464:2017)
This European Standard was approved by CEN on 12 August 2019.

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, Turkey 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 29464:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 29464:2017 has been prepared by Technical Committee 142 "Cleaning equipment for air
and other gases” of the International Organization for Standardization (ISO) and has been taken over as
secretariat of which is held by UNI.
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 April 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
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 EN 14799:2007.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 29464:2017 has been approved by CEN as EN ISO 29464:2019 without any modification.

INTERNATIONAL ISO
STANDARD 29464
Second edition
2017-09
Cleaning of air and other gases —
Terminology
Épuration de l’air et autres gaz — Terminologie
Reference number
ISO 29464:2017(E)
©
ISO 2017
ISO 29464:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
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ii © ISO 2017 – All rights reserved

ISO 29464:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General, applicable to both particulate and gas-phase air cleaners . 1
3.2 Particulate filters (including general ventilation, HEPA and ULPA filters) . 5
3.3 Air intake particulate filters for rotary machines .20
3.4 Cleanable particulate filter degradation .22
3.5 Gas phase air cleaners (GPAC) .24
3.6 UVC devices .30
Bibliography .33
ISO 29464:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 142, Cleaning equipment for air and
other gases.
This second edition of ISO 29464 cancels and replaces the first edition (ISO 29464:2011), which has
been technically revised.
iv © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 29464:2017(E)
Cleaning of air and other gases — Terminology
1 Scope
This document establishes a terminology for the air filtration industry and comprises terms and
definitions only.
This document is applicable to particulate and gas phase air filters and air cleaners used for the general
ventilation of inhabited enclosed spaces. It is also applicable to air inlet filters for static or seaborne
rotary machines and UV-C germicidal devices.
It is not applicable to cabin filters for road vehicles or air inlet filters for mobile internal combustion
engines for which separate arrangements exist. Dust separators for the purpose of air pollution control
are also excluded.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purpose 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 http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1 General, applicable to both particulate and gas-phase air cleaners
3.1.1
air cleaner
device intended to remove contaminants (3.1.8) from air in a ventilation system or enclosed space
3.1.2
air velocity
rate of air movement
Note 1 to entry: It is expressed in m/s (fpm) to three significant figures.
3.1.3
bypass
air filter bypass
sneakage
proportion of the challenge air stream (3.5.13) that passes around an air cleaner (3.1.1) without
interacting with the air cleaner
3.1.4
calibrate
to compare readings from the instrument to be calibrated with those from a reference device
ISO 29464:2017(E)
3.1.5
capture
extraction of particles, liquid particles or gases, close to their sources for purposes of collection or
sampling
3.1.6
classification
allocation of filters into groups and classes according to relevant aspects of their filtration performance
3.1.7
concentration
quantity of one substance dispersed in a defined amount of another
3.1.8
contaminant
pollutant
substance (solid, liquid or gas) that negatively affects the intended use of a fluid
3.1.9
contamination
pollution
presence of a substance that negatively affects the intended use of a fluid
3.1.10
decontamination factor
ratio of the contaminant (3.1.8) concentration or particle number upstream of the test device to the
contaminant concentration (3.1.7) or particle number downstream of the device
Note 1 to entry: The decontamination factor can also be expressed as 1/(1 – overall efficiency) or as 1/penetration.
3.1.11
downstream
area or region into which fluid flows on leaving the test device
3.1.12
efficiency
filter efficiency
fraction or percentage of a challenge contaminant (3.1.8) that is removed by a test device
3.1.13
average efficiency
value of efficiency which results from averaging the efficiencies determined over a number of discreet
intervals up to the final pressure differential
3.1.14
effluent
fluid discharged from a given source into the external environment
Note 1 to entry: This is a general term describing any fluid discharged from a given source; in this context, the
discharged fluid may be liquid or gaseous and may contain associated liquid and/or particulate contaminants
(3.1.8).
3.1.15
face velocity
filter face velocity
volumetric air flow rate divided by the nominal filter face area (3.1.18)
Note 1 to entry: filter face velocity is expressed in m/s.
2 © ISO 2017 – All rights reserved

ISO 29464:2017(E)
3.1.16
filter
air filter
device for separating solid or liquid particles or gaseous contaminant (3.1.8) from an air stream passing
through the device
Note 1 to entry: The device is generally formed of a layer or layers of porous, fibrous or granular material.
Note 2 to entry: Air being cleaned by a filter must pass through the filter, whereas an air cleaner (3.1.1) can
reduce air contamination (3.1.9) by any method.
3.1.17
filter face area
cross-sectional face area of the filter including the header frame when viewed from the direction of air
flow using exact dimensions
3.1.18
nominal filter face area
cross-sectional face area of the filter including the header frame when viewed from the direction of air
flow using nominal dimensions
3.1.19
filter insert
replaceable part of
...