prEN IEC 60079-29-0:2024
(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.
Eksplozivne atmosfere - 29-0. del: Javljalniki plina - Splošne zahteve in preskusne metode, in morebitni dodatni deli
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SLOVENSKI STANDARD
01-september-2024
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
Ta slovenski standard je istoveten z: prEN IEC 60079-29-0:2024
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.
31/1784/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60079-29-0 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-07-12 2024-10-04
SUPERSEDES DOCUMENTS:
31/1757/CD, 31/1765B/CC
IEC TC 31 : EQUIPMENT FOR EXPLOSIVE ATMOSPHERES
SECRETARIAT: SECRETARY:
United Kingdom Mr Tom Stack
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if any, in this
CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE 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.
The CENELEC members are invited to vote through the
CENELEC 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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are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (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:
electronic 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
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31/1784/CDV – 2 – IEC CDV 60079-29-0
1 CONTENTS .5
2 FOREWORD . 5
3 INTRODUCTION . 7
4 1 Scope . 8
5 2 Normative references . 9
6 3 Terms and definitions . 9
7 4 General requirements . 16
8 4.1 Introduction . 16
9 4.2 Design . 17
10 4.2.1 General . 17
11 4.2.2 Indicators and means of indication . 17
12 4.2.3 Alarm signal(s) . 19
13 4.2.4 Fault signals . 20
14 4.2.5 Special state indication . 20
15 4.2.6 Adjustments . 21
16 4.2.7 Battery-powered equipment . 21
17 4.2.8 Software-controlled equipment . 21
18 4.3 Labelling and marking . 22
19 4.4 Instructions . 22
20 5 Test methods . 26
21 5.1 General . 26
22 5.2 General requirements for tests . 26
23 5.2.1 Samples and sequence of tests . 26
24 5.2.2 Preparation of equipment before testing . 28
25 5.2.3 Mask for calibration and test . 28
26 5.2.4 Open path gas detection equipment . 29
27 5.3 Normal conditions for test . 31
28 5.3.1 General . 31
29 5.3.2 Test gas(es) . 31
30 5.3.3 Flow rate for test gases . 33
31 5.3.4 Power supply . 33
32 5.3.5 Temperature . 33
33 5.3.6 Pressure . 33
34 5.3.7 Humidity . 33
35 5.3.8 Acclimation time . 34
36 5.3.9 Orientation . 34
37 5.3.10 Communications options . 34
38 5.4 Tests . 34
39 5.4.1 General . 34
40 5.4.2 Unpowered storage . 35
41 5.4.3 Vibration . 35
42 5.4.4 Drop test . 36
43 5.4.5 Calibration kit . 37
44 5.4.6 Linearity . 37
45 5.4.7 Alarm set-point(s) . 37
46 5.4.8 Stability . 39
47 5.4.9 Gas concentrations above the upper limit of indication . 39
48 5.4.10 Poisons and other gases . 41
IEC CDV 60079-29-0 – 3 – 31/1784/CDV
49 5.4.11 Temperature . 42
50 5.4.12 Pressure . 43
51 5.4.13 Humidity of test gas . 43
52 5.4.14 Air velocity (diffusion equipment only) . 44
53 5.4.15 Flow rate (aspirated equipment only) . 44
54 5.4.16 Warm-up time . 45
55 5.4.17 Time of response . 45
56 5.4.18 Time of recovery . 46
57 5.4.19 Sampling probe . 46
58 5.4.20 Operation at or below the lower limit of measurement (type O2-IN
59 oxygen detection equipment only) . 46
60 5.4.21 Extended operation in test gas (Type TX equipment only). 46
61 5.4.22 Orientation . 47
62 5.4.23 Battery capacity for battery-powered equipment . 47
63 5.4.24 Power supply variations for externally powered equipment . 48
64 5.4.25 Electromagnetic immunity . 48
65 5.4.26 Fault signal tests . 50
66 5.4.27 Software controlled equipment . 52
67 5.4.28 Environmental protection . 52
68 5.4.29 Beam block fault (Optical sensors) . 54
69 5.4.30 Water vapour interference (Open path only) . 54
70 5.4.31 Alignment (Open path only) . 54
71 5.4.32 Partial obscuration (Open path only) . 55
72 5.4.33 Long range operation (Open path only) . 55
73 5.4.34 Direct solar radiation (Open path only) . 55
74 5.4.35 Signal intensity variation (Open path topographic reflection only) . 56
75 5.4.36 Scanning performance (Open path topographic reflection only) . 56
76 Annex A (normative) Acceptance Criterion for Type FL Equipment . 57
77 A.1 Type FL-Group I equipment . 57
78 A.2 Type FL-Group II equipment . 59
79 A.3 Type FL-Group II Hydrogen gas detection equipment . 61
80 Annex B (normative) Acceptance Criterion for Type O2 Equipment . 65
81 B.1 Type O2 equipment (Type O2-DE & Type O2-IN) . 65
82 Annex C (normative) Acceptance Criterion for Type TX Equipment . 68
83 C.1 Type TX equipment (Type TX-SM & Type TX-HM) . 68
84 Annex D (normative) Acceptance Criterion for Open Path Gas Detection Equipment. 71
85 D.1 Open path gas detection equipment (Type FL-OP and TX-OP) . 71
86 Annex E (normative) Gas specific performance requirements . 73
87 Annex F (normative) Determination of time of response and time of recovery . 75
88 F.1 Calculation of response and recovery times . 75
89 F.2 Underdamped responses . 75
90 F.3 Pressure, temperature and gas velocities. 78
91 F.4 Diffusion equipment . 79
92 F.4.1 Experimental arrangements . 79
93 F.4.2 Calibration mask method 1 . 79
94 F.4.3 Calibration mask method 2 . 80
95 F.4.4 Flow method . 81
96 F.4.5 Injection method . 82
31/1784/CDV – 4 – IEC CDV 60079-29-0
97 F.5 Aspirated equipment . 82
98 F.5.1 Test rig .
...
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