prEN IEC 60079-29-0:2025
(Main)Explosive atmospheres - Part 29-0: Gas detectors - General requirements and test methods, and possible supplementary parts
Explosive atmospheres - Part 29-0: Gas detectors - General requirements and test methods, and possible supplementary parts
E DIN EN IEC 60079-29-0 Explosionsgefährdete Bereiche - Teil 29-0: Gaswarngeräte - Allgemeine Anforderungen und Prüfverfahren und mögliche ergänzende Normenteile.
Atmosphères explosives - Partie 29-0: Détecteurs de gaz - Exigences générales et méthodes d’essai, et parties supplémentaires possibles
Eksplozivne atmosfere - 29-0. del: Javljalniki plina - Splošne zahteve in preskusne metode in morebitni dodatni deli
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Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2025
Eksplozivne atmosfere - 29-0. del: Javljalniki plina - Splošne zahteve in preskusne
metode in morebitni dodatni deli
Explosive atmospheres - Part 29-0: Gas detectors - General requirements and test
methods, and possible supplementary parts
E DIN EN IEC 60079-29-0 Explosionsgefährdete Bereiche - Teil 29-0: Gaswarngeräte -
Allgemeine Anforderungen und Prüfverfahren und mögliche ergänzende Normenteile.
Atmosphères explosives - Partie 29-0: Détecteurs de gaz - Exigences générales et
méthodes d’essai, et parties supplémentaires possibles
Ta slovenski standard je istoveten z: prEN IEC 60079-29-0:2025
ICS:
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
29.260.20 Električni aparati za Electrical apparatus for
eksplozivna ozračja explosive atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
31/1846/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60079-29-0 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-02-07 2025-04-04
SUPERSEDES DOCUMENTS:
31/1784/CDV, 31/1845/RVC
IEC TC 31 : EQUIPMENT FOR EXPLOSIVE ATMOSPHERES
SECRETARIAT: SECRETARY:
United Kingdom Mr Tom Stack
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
ASPECTS CONCERNED:
Safety
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of CENELEC,
is drawn to the fact that this Committee Draft for Vote (CDV) is
submitted for parallel voting.
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online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
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included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC c lauses. (SEE
AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Explosive atmospheres - Part 29-0: Gas detectors - General requirements and test methods, and possible
supplementary parts.
PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
Please refer to 31/1847/INF for the circulation of the CDV with track changes.
file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy
or "mirror" the file or printed version of the document, or any part of it, for any other purpose without permission in writi ng from IEC.
31/1846/CDV 2 IEC 60079-29-0 ED1 © IEC 2024
1 CONTENTS
2 FOREWORD . 5
3 INTRODUCTION . 7
4 1 Scope . 8
5 2 Normative references . 9
6 3 Terms and definitions . 9
7 3.1 Gas properties . 9
8 3.2 Structure (or composition) of gas detection equipment . 10
9 3.3 Sensors . 12
10 3.4 Supply of gas to equipment . 12
11 3.5 Signals and alarms . 13
12 3.6 Times. 15
13 3.7 Open path gas detection equipment and fixed point infrared detectors . 16
14 4 General requirements . 18
15 4.1 Overview. 18
16 4.2 Design . 18
17 4.2.1 General . 18
18 4.2.2 Indicators and means of indication . 19
19 4.2.3 Alarm signal(s) . 21
20 4.2.4 Fault signals . 21
21 4.2.5 Special state indication . 22
22 4.2.6 Adjustments . 22
23 4.2.7 Battery-powered equipment . 22
24 4.2.8 Software-controlled equipment . 22
25 4.3 Marking . 24
26 4.4 Instructions . 24
27 5 Test methods . 27
28 5.1 General . 27
29 5.2 General requirements for tests . 27
30 5.2.1 Samples and sequence of tests . 27
31 5.2.2 Preparation of equipment before testing (All Types excluding FL-OP
32 and TX-OP) . 29
33 5.2.3 Preparation of equipment before testing (Types FL-OP and TX-OP) . 30
34 5.3 Normal conditions for test . 33
35 5.3.1 General . 33
36 5.3.2 Test gas(es) . 33
37 5.3.3 Flow rate for test gases . 34
38 5.3.4 Power supply . 34
39 5.3.5 Temperature . 35
40 5.3.6 Pressure . 35
41 5.3.7 Humidity . 35
42 5.3.8 Acclimation time . 35
43 5.3.9 Orientation . 35
44 5.3.10 Communications options . 35
45 5.4 Tests . 35
46 5.4.1 General . 35
47 5.4.2 Unpowered storage . 36
48 5.4.3 Vibration . 37
IEC 60079-29-0 ED1 © IEC 2024 3 31/1846/CDV
49 5.4.4 Drop test . 38
50 5.4.5 Calibration kit . 38
51 5.4.6 Linearity . 39
52 5.4.7 Alarm set-point(s) . 39
53 5.4.8 Stability . 40
54 5.4.9 Gas concentrations above the upper limit of indication . 42
55 5.4.10 Poisons and other gases . 43
56 5.4.11 Temperature . 44
57 5.4.12 Pressure (equipment with sensors only) . 46
58 5.4.13 Humidity of test gas . 46
59 5.4.14 Air velocity (diffusion equipment only) . 46
60 5.4.15 Flow rate (aspirated equipment only) . 47
61 5.4.16 Warm-up time . 47
62 5.4.17 Time of response . 48
63 5.4.18 Time of recovery . 48
64 5.4.19 Sampling probe . 48
65 5.4.20 Operation at or below the lower limit of measurement (Type O2-DE
66 only) . 49
67 5.4.21 Extended operation in test gas (Type TX only) . 49
68 5.4.22 Orientation . 49
69 5.4.23 Battery capacity for battery-powered equipment . 50
70 5.4.24 Power supply variations for externally powered equipment . 51
71 5.4.25 Electromagnetic immunity . 51
72 5.4.26 Fault signal tests . 53
73 5.4.27 Software controlled equipment . 55
74 5.4.28 Environmental protection . 55
75 5.4.29 Beam block fault (open path except for topographic reflection) . 56
76 5.4.30 Water vapour interference (Open path only) . 57
77 5.4.31 Alignment (Open path only except for topographic detectors) . 57
78 5.4.32 Partial obscuration (Open path only) . 57
79 5.4.33 Long range operation (Open path only) . 57
80 5.4.34 Direct solar radiation (Open path only) . 58
81 5.4.35 Signal intensity variation (Open path topographic reflection only) . 58
82 5.4.36 Scanning performance (Open path topographic reflection only) . 58
83 Annex A (normative) Acceptance criteria for Type FL . 59
84 A.1 Type FL-Group I . 59
85 A.2 Type FL-Group II . 61
86 A.3 Type FL-Group II hydrogen gas detection equipment . 64
87 Annex B (normative) Acceptance criteria for Type O2 . 67
88 B.1 Type O2 equipment (Type O2-DE & Type O2-IN) . 67
89 Annex C (normative) Acceptance criteria for Type TX . 69
90 C.1 Type TX equipment (Type TX-SM & Type TX-HM) . 69
91 Annex D (normative) Acceptance criteria for open path gas detection equipment . 71
92 D.1 Open path gas detection equipment (Type FL-OP and TX-OP) . 71
93 Annex E (normative) Gas specific performance requirements . 73
94 Annex F (normative) Determination of time of response and time of recovery . 75
95 F.1 Calculation of response and recovery times . 75
96 F.2 Pressure, temperature and gas velocities. 76
31/1846/CDV 4 IEC 60079-29-0 ED1 © IEC 2024
97 F.3 Diffusion equipment .
...
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