EN 60079-29-1:2007

SLOVENSKI STANDARD
01-september-2008
Eksplozivne atmosfere - 29-1. del: Javljalniki plina - Zahteve za delovanje
javljalnikov vnetljivih plinov (IEC 60079-29-1:2007, spremenjen)
Explosive atmospheres -- Part 29-1: Gas detectors - Performance requirements of
detectors for flammable gases
Explosionsfähige Atmosphäre -- Teil 29-1: Gasmessgeräte - Anforderungen an das
Betriebsverhalten von Geräten für die Messung brennbarer Gase
Atmosphères explosives -- Partie 29-1: Détecteurs de gaz - Exigences d'aptitude à la
fonction des détecteurs de gaz inflammables
Ta slovenski standard je istoveten z: EN 60079-29-1:2007
ICS:
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60079-29-1
NORME EUROPÉENNE
November 2007
EUROPÄISCHE NORM
ICS 29.260.20 Supersedes EN 61779-1:2000 + A11:2004, EN 61779-2:2000, EN 61779-3:2000,
EN 61779-4:2000, EN 61779-5:2000

English version
Explosive atmospheres -
Part 29-1: Gas detectors -
Performance requirements of detectors for flammable gases
(IEC 60079-29-1:2007, modified)

Atmosphères explosives -  Explosionsfähige Atmosphäre -
Partie 29-1: Détecteurs de gaz - Teil 29-1: Gasmessgeräte -
Exigences d'aptitude à la fonction Anforderungen an das Betriebsverhalten
des détecteurs de gaz inflammables von Geräten für die Messung
(CEI 60079-29-1:2007, modifiée) brennbarer Gase
(IEC 60079-29-1:2007, modifiziert)

This European Standard was approved by CENELEC on 2007-11-01. CENELEC 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 Central Secretariat or to any CENELEC 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 CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60079-29-1:2007 E
Foreword
The text of document 31/695/FDIS, future edition 1 of IEC 60079-29-1, prepared by IEC TC 31,
Equipment for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote.
A draft amendment, prepared by SC 31-9, Electrical apparatus for the detection and measurement of
combustible gases to be used in industrial and commercial potentially explosive atmospheres, of
Technical Committee CENELEC TC 31, Electrical apparatus for explosive atmospheres, containing
common modifications to document 31/695/FDIS was submitted to the formal vote.
The combined texts of document 31/695/FDIS and the draft amendment prAA were approved by
CENELEC as EN 60079-29-1 on 2007-11-01.
This European Standard supersedes EN 61779-1:2000 + A11:2004, EN 61779-2:2000,
EN 61779-3:2000, EN 61779-4:2000 and EN 61779-5:2000.
The main changes with respect to the EN 61779 series are listed below:
– Subclause 4.2.3 (Alarm or output functions) was modified to ensure alarm devices cannot be
adjustable outside their measuring range and to include requirements for de-activation of alarm
devices;
– Subclause 4.2.7 (Stand-alone gas detection apparatus for use with separate control units) was added
to allow separate evaluation of detection apparatus providing an industry recognized output signal;
– Subclause 4.2.8 (Separate control units for use with stand-alone gas detection apparatus) was added
to allow separate evaluation of control unit apparatus using an industry recognized input signal;
– Subclause 4.2.9 (Software-controlled apparatus) was added to the document for improved evaluation
of software. The added text is based upon the guiding principles and requirements of EN 50271;
– Subclause 5.2.1.1 was modified to require the center wavelength of the optical filters of two apparatus
at the minimum and maximum limit of this standard;
– Subclause 5.2.1.2 was modified to allow the order of testing within each block to be conducted at the
discretion of the test laboratory;
– Subclause 5.3.11 (Communications options) was added to ensure maximum transaction rates are
applied during testing;
– Subclause 5.3.12 (Gas detection apparatus as part of systems) was added to ensure maximum
transaction rates are applied during testing;
– Subclause 5.4.6 (Alarm set point(s)) was modified to include text related to alarms that are activated at
decreasing concentrations;
– Subclause 5.4.10 (Air velocity) was modified to include testing at 3 m/s and 6 m/s;
– Subclause 5.4.16 (Time of response) was modified to exclude recovery time test requirements for
Group II apparatus with a volume fraction up to 100 % LFL indication;
– Subclause 5.4.18 (High gas concentration operation above the measuring range) was modified to
define the sequence of tests;
– Annex A (Performance requirements) has undergone major modifications by eliminating the
gas/vapour table and replacing the annex with the performance requirements of Parts 2 to 5 of
EN 61779. Additionally, performance requirements of Parts 2 to 5 of EN 61779 were adjusted for
consistency as appropriate. The intent of this change is to condense Parts 1 to 5 of EN 61779 within a
single standard.
– 3 – EN 60079-29-1:2007
This part of EN 60079-29 is to be used in conjunction with the following standards:
– EN 60079-0, Electrical apparatus for explosive gas atmospheres – Part 0: General requirements
– EN 60079-29-2, Explosive atmospheres – Part 29-2: Gas detectors – Selection, installation, use and
maintenance of detectors for flammable gases and oxygen.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-11-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-11-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive 94/9/EC. See Annex ZZ.
Annexes ZA and ZZ have been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60079-29-1:2007 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
1 Scope
Delete NOTE 1 and renumber NOTE 2 to NOTE 4 as NOTE 1 to NOTE 3.
2 Normative references
Add the following undated references:
EN 50270, Electromagnetic compatibility - Electrical apparatus for the detection and measurement of
combustible gases, toxic gases or oxygen
EN 50271, Electrical apparatus for the detection and measurement of combustible gases, toxic gases or
oxygen - Requirements and tests for apparatus using software and/or digital technologies
Delete IEC 61000-4-1.
IEC 61000-4-3.
Delete
Delete IEC 61000-4-4.
3 Terms and definitions
st
In the 1 paragraph replace "IEC 60079-0" with "EN 60079-0".
4 General requirements
st
4.1.2 At the end of the 1 paragraph replace "… in the other relevant parts of the IEC 60079 series."
with "…in the appropriate regulations for explosion protection".
nd
In the 2 paragraph replace "… of these other parts of IEC 60079" with "… of the appropriate regulations
for explosion protection".
4.1.3 Replace by "Void".
4.2.9 Replace Subclauses 4.2.9.1 to 4.2.9.6 by:

The apparatus shall fulfil the requirements of EN 50271.
st
4.3 In the 1 paragraph replace "IEC 60079-0" with "EN 60079-0".
Delete the NOTE.
4.4 In the NOTE between c) and d) replace "IEC 60079-29-2" with "EN 60079-29-2".

– 5 – EN 60079-29-1:2007
5 Test methods
5.4.21 Replace this subclause by:
5. 4. 21 El ectromagnetic compatibility
The apparatus shall be set up under normal conditions, in accordance with 5.3, and then shall be
subjected to the tests specified in EN 50270.
In the NOTE "IEC 60079-29-2" with "EN 60079-29-2".
5.4.24.1 replace
5.4.25 Delete the whole subclause.
Table A.1 – Performance requirements
Replace the row referring to 5.4.21 by:
Subclause Test Group I apparatus limits Group II apparatus limits
(whichever value is greater) (whichever value is greater)
Volume fraction Volume fraction Volume fraction Volume fraction
up to 5 % up to 100 % up to 100 % up to 100 % gas
indication
methane in air methane in air lower flammable
indication indication limit indication
5.4.21 Electromagnetic According to According to According to According to
compatibility EN 50270 EN 50270 EN 50270 EN 50270

Delete the row referring to 5.4.25.
Bibliography
Add the following notes for the standards indicated:
IEC 60068-2-6 NOTE  Harmonized as EN 60068-2-6:1995 (not modified).
IEC 60079-1 NOTE  Harmonized as EN 60079-1:2007 (not modified).
IEC 60079-2 NOTE  Harmonized as EN 60079-2:2004 (not modified).
IEC 60079-6 NOTE  Harmonized as EN 60079-6:2007 (not modified).
IEC 60079-7 NOTE  Harmonized as EN 60079-7:2007 (not modified).
IEC 60079-10 NOTE  Harmonized as EN 60079-10:2003 (not modified).
IEC 60079-11 NOTE  Harmonized as EN 60079-11:2007 (not modified).
IEC 60079-15 NOTE  Harmonized as EN 60079-15:2005 (not modified).
IEC 60079-18 NOTE  Harmonized as EN 60079-18:2004 (not modified).

IEC 60079-25 NOTE  Harmonized as EN 60079-25:2004 (not modified).
IEC 60079-26 NOTE  Harmonized as EN 60079-26:2007 (not modified).
ISO 2738 NOTE  Harmonized as EN ISO 2738:1999 (not modified).
ISO 4003 NOTE  Harmonized as EN 24003:1993 (not modified).
ISO 4022 NOTE  Harmonized as EN ISO 4022:2006 (not modified).
ISO 6142 NOTE  Harmonized as EN ISO 6142:2006 (not modified).
__________
– 7 – EN 60079-29-1:2007
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1)
- - Electromagnetic compatibility - Electrical EN 50270 -
apparatus for the detection and measurement
of combustible gases, toxic gases or oxygen

1)
- - Electrical apparatus for the detection and EN 50271 -
measurement of combustible gases, toxic
gases or oxygen - Requirements and tests
for apparatus using software and/or digital
technologies
1) 2)
IEC 60079-0 (mod) - Electrical apparatus for explosive gas EN 60079-0 2006
atmospheres -
Part 0: General requirements
1)
IEC/TR 60079-20 - Electrical apparatus for explosive gas - -
atmospheres -
Part 20: Data for flammable gases and
vapours, relating to the use of electrical
apparatus
1) 2)
IEC 60079-29-2 - Explosive atmospheres - EN 60079-29-2 2007
Part 29-2: Gas detectors - Selection,
installation, use and maintenance of detectors
for flammable gases and oxygen

———————
1)
Undated reference.
2)
Valid edition at date of issue.

Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European free Trade Association and within its scope the Standard covers only the
following essential requirements out of those given in Annex II of the EC Directive 94/9/EC:
– ER 1.5.5 to ER 1.5.7 – the essential safety requirements for devices with a measuring function for
explosion protection;
– ER 1.5.8 – the risks arising from software.
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive concerned.
WARNING: Other requirements and other EC Directives can be applied to the products falling within the
scope of this standard.
__________
IEC 60079-29-1
Edition 1.0 2007-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Explosive atmospheres –
Part 29-1: Gas detectors – Performance requirements of detectors for flammable
gases
Atmosphères explosives –
Partie 29-1: Détecteurs de gaz – Exigences d’aptitude à la fonction des
détecteurs de gaz inflammables

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
X
CODE PRIX
ICS 29.260.20 ISBN 2-8318-9249-X

– 2 – 60079-29-1 © IEC:2007
CONTENTS
FOREWORD.5
INTRODUCTION.8

1 Scope.
...