EN 60079-29-4:2010

SLOVENSKI STANDARD
01-junij-2010
Eksplozivne atmosfere - 29-4. del: Javljalniki plina - Zahteve za delovanje
javljalnikov vnetljivih plinov z odprto merilno potjo (IEC 60079-29-4:2009)
Explosive atmospheres - Part 29-4: Gas detectors - Performance requirements of open
path detectors for flammable gases n(IEC 60079-29-4:2009)
Explosionsfähige Atmosphäre - Teil 29-4: Gasmessgeräte - Anforderungen an das
Betriebsverhalten von Geräten mit offener Messstrecke für die Messung brennbarer
Gase (IEC 60079-29-4:2009)
Atmosphères explosives - Partie 29-4: Détecteurs de gaz - Exigences d'aptitude à la
fonction des détecteurs de gaz inflammables à chermin ouvert (CEI 60079-29-4:2009)
Ta slovenski standard je istoveten z: EN 60079-29-4:2010
ICS:
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 60079-29-4
NORME EUROPÉENNE
April 2010
EUROPÄISCHE NORM
ICS 29.260.20 Supersedes EN 50241-1:1999 + A1:2004, EN 50241-2:1999

English version
Explosive atmospheres -
Part 29-4: Gas detectors -
Performance requirements of open path detectors for flammable gases
(IEC 60079-29-4:2009)
Atmosphères explosives -  Explosionsfähige Atmosphäre -
Partie 29-4: Détecteurs de gaz - Teil 29-4: Gasmessgeräte -
Exigences d'aptitude à la fonction Anforderungen an das Betriebsverhalten
des détecteurs de gaz inflammables von Geräten mit offener Messstrecke
à chemin ouvert für die Messung brennbarer Gase
(CEI 60079-29-4:2009) (IEC 60079-29-4:2009)

This European Standard was approved by CENELEC on 2010-04-01. 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, Croatia, 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: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60079-29-4:2010 E
Foreword
The text of document 31/819/FDIS, future edition 1 of IEC 60079-29-4, prepared by IEC Technical
Committee 31, Equipment for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote.
A draft amendment, prepared by the CENELEC 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 potentially explosive
atmospheres, was submitted to the formal vote.
The combined texts were approved by CENELEC as EN 60079-29-4 on 2010-04-01.
requirement of this standard conflicts with a requirement of EN 60079-0, the requirement of this standard
shall take precedence.
This European Standard supersedes EN 50241-1:1999 + A1:2004 and EN 50241-2:1999.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-01-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2013-04-01
Annexes ZA, ZZ and ZY have been added by CENELEC.
__________
– 3 – EN 60079-29-4:2010
Endorsement notice
The text of the International Standard IEC 60079-29-4:2009 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
ISO 6142 NOTE  Harmonized as EN ISO 6142
ISO 6144 NOTE  Harmonized as EN ISO 6144
ISO 6145 NOTE  Harmonized as EN ISO 6145
__________
COMMON MODIFICATIONS
1 Scope
Replace “IEC 60079-29” with “EN 60079-29” in paragraph 1.
Replace “IEC 60079-29-1” with “EN 60079-29-1” in Note 1.
Delete note 3.
2 Normative references
Replace “IEC 60079 (all parts)” with “EN 60079 (all parts)” in paragraph 2.
Replace “IEC 60079-0” with “EN 60079-0” in paragraph 3.
Replace “IEC 60079-29-1” with “EN 60079-29-1” in paragraph 4.

Delete references to IEC 61000-4-1 and IEC 61000-4-3 in paragraphs 6 and 7.

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

3 Terms and definitions
st
In the 1 paragraph:
Replace “IEC 60079-0” with “EN 60079-0”.
Replace “IEC 60079-29-1” with “EN 60079-29-1”.

4 General requirements
4.1.1
nd
In the 2 paragraph, line 2, replace “… of these other parts of IEC 60079” with “… of the appropriate
regulations for explosion protection”.

4.3
Add “The apparatus shall fulfil the requirements of EN 50271.”
Delete subclauses 4.3.1 to 4.3.5.

5 Test methods
5.2.4.2
In the second paragraph, replace reference to test 5.4.16 by 5.4.20.

5.4.12
rd
In the 3 paragraph, replace “A 90% of the change.” with “90% of the change.”.

5.4.15 Power supply interruptions and transients
Replace 5.4.15.1, 5.4.15.2 and 5.4.15.3 with “Text deleted”.

5.4.17
Replace this subclause by:
5.4.17 Electromagnetic 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.

NOTE For this test the operating distance may be relaxed to suit the requirements of the EMC test facility.”

7.1 Labelling and marking
Delete the text and replace with:

“The equipment shall comply with the marking requirements of EN 60079-0.

In addition, the equipment shall also be marked:
a) “EN 60079-29-4” (to represent conformance with this performance standard);
b) year of construction (may be encoded within the serial number).”

7.2 Instruction manual
Add “EN” before “60079-0” in paragraph 1, line 2.

– 5 – EN 60079-29-4:2010
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

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

- - 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
IEC 60079 Series Explosive atmospheres EN 60079 Series

IEC 60079-0 - Explosive atmospheres - EN 60079-0 -
Part 0: Equipment - General requirements

IEC 60079-29-1 - Explosive atmospheres - EN 60079-29-1 -
(mod) Part 29-1: Gas detectors - Performance
requirements of detectors for flammable
gases
IEC 60825-1 - Safety of laser products - EN 60825-1 -
Part 1: Equipment classification and
requirements
Annex ZY
(informative)
Significant changes between this European Standard and EN 50241-1:1999
and EN 50241-2:1999
This European Standard supersedes EN 50241-1:1999 and EN 50241-2:1999.
The significant changes with respect to EN 50241-1:1999 and EN 50241-2:1999 are as listed below.
Type
Minor and Extension Substantial
editorial change
changes regarding
a
ESR´s
Normative references: EN 60068-2-6 (vibration), removed,
X
EN 50271 (software) added
Definitions: 3 modified, 3 added, 2 removed X
General requirements 4.1 and 4.1.1 modified, 4.1.5 replaced
by 4.3 (Software-controlled equipment, new), 4.2.2.4 (low X
battery indications) replaced within 4.2.4 (Fault signals, new)
General requirements and normal conditions for tests
modified and extended (clauses 5.1, 5.2.4.1, 5.2.4.2, 5.3.2, X
5.3.3, 5.3.7, 5.3.8, 5.3.11, 5.3.12)
Test method 5.4.2 (Unpowered storage) modified X
Test method 5.4.3 (Calibration curve) modified
X X
Test method 5.4.4.1, ‘Short term drift’ test removed, replaced
with ‘Slow increase of gas volume ratio’ for equipment with X X
automatic drift compensation
Test method 5.4.4.2 (Long term stability) modified X
Test method 5.4.4.3, Long term stability (continuous duty,
X X
battery powered) test added
Test method 5.4.4.4, Stability (spot reading equipment only)
X X
test added
Test method 5.4.6 (Temperature variation) modified X
Requirements for test 5.4.6 modified X
Test method 5.4.7 removed (Pressure variation) X
Test method 5.4.7 (Water vapour interference) modified X
Requirements for test 5.4.7 modified X
Test method 5.4.8 (Vibration) modified X
Requirements for test 5.4.8 modified X
Test method 5.4.9, Drop test for portable and transportable
X X
equipment added
– 7 – EN 60079-29-4:2010
Type
Minor and Extension Substantial
editorial change
changes regarding
a
ESR´s
Test method 5.4.12, Minimum time to operate (spot reading
X X
equipment) test added
Test method 5.4.13 removed (Power supply interruptions etc,
X
now part of EMC requirement of EN 50270)
Test method 5.4.13, Battery capacity test added X X
Test method 5.4.14 (Power supply variations) modified X
Test method 5.4.16 removed (Attenuation of radiation, now
X
part of 5.4.20, Long range operation)
Requirements for test 5.4.16 (now Recovery from power
X
supply interruption) modified
Test method 5.4.19, Partial obscuration test added X X
Requirements for test 5.4.20 (Long range operation) modified X
Labelling and marking requirements modified X
Annex A removed (atmospheric visibility) X
New Annex A added (water vapour test apparatus) X
Bibliography much reduced X
The requirements of EN 50241-2 have been incorporated
into the test methods of the new standard, thus combining X
the two previous standards into one
a
ESR = Essential Health and Safety Requirements (Annex II of Directive 94/9/EC)

General conclusion on the change of the State of the Art by this standard
CENELEC/TC 31 as the responsible committee has concluded that this new edition contains substantial
changes regarding the ESRs.
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 given in Annex II, Clauses 1.5.5 to 1.5.8 of the EC Directive 94/9/EC:
– ER 1.5.5 to 1.5.7 – the essential safety requirements for devices with a measuring function for
explosion protection
– 1.5.5 is covered by 5.4 of this standard
– 1.5.6 is covered by 4.2.1, 4.2.2, and 4.2.4
– 1.5.7 is covered by 4.2.3 and 5.4
– ER 1.5.8 – the risks arising from software
– 1.5.8 is covered by 4.3
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 60079-29-4 ®
Edition 1.0 2009-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Explosive atmospheres –
Part 29-4: Gas detectors – Performance requirements of open path detectors for
flammable gases
Atmosphères explosives –
Partie 29-4: Détecteurs de gaz – Exigences d’aptitude à la fonction des
détecteurs de gaz inflammables à chemin ouvert

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 29.260.20 ISBN 2-8318-1067-6
– 2 – 60079-29-4 © IEC:2009
CONTENTS
FOREWORD.4
1 Scope.
...