oSIST prEN IEC 61252:2024

SLOVENSKI STANDARD
01-september-2024
Elektroakustika - Merilniki osebne izpostavljenosti zvoku
Electroacoustics - Personal sound exposure meters
Elektroakustik - Anforderungen an Personenschallexposimeter
électroacoustique - Exposimètres acoustiques individuels
Ta slovenski standard je istoveten z: prEN IEC 61252:2024
ICS:
13.140 Vpliv hrupa na ljudi Noise with respect to human
beings
17.140.50 Elektroakustika Electroacoustics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

29/1180/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61252 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-08-02 2024-10-25
SUPERSEDES DOCUMENTS:
29/1153/CD, 29/1157A/CC
IEC TC 29 : ELECTROACOUSTICS
SECRETARIAT: SECRETARY:
Denmark Ms Lise Aagesen
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.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they 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:
Electroacoustics - Personal sound exposure meters
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
At its meeting April 2024 in Warsaw, IEC/TC 29 took the following decision, doc. 29/1174/DL, refers:
DECISION 1
TC 29 decides to proceed with 2CD IEC 61252 "Electroacoustics – Personal sound exposure meters"
as a CDV with the following target dates:
CDV: 2024-08-31
FDIS: 2025-08-31
Publication: 2025-11-30.
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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IEC CDV 61252 © IEC 2024 – 2 – 29/1180/CDV
2 CONTENTS
3 FOREWORD. 5
4 INTRODUCTION . 7
5 1 Scope . 8
6 2 Normative references . 9
7 3 Terms and definitions . 9
8 4 Performance specifications . 13
9 4.1 General performance requirements . 13
10 4.1.1 Components . 13
11 4.1.2 Display device . 14
12 4.1.3 Configuration . 14
13 4.1.4 Design features . 15
14 4.1.5 Adjustment at the calibration check frequency . 16
15 4.1.6 Determination of conformance . 17
16 4.1.7 Reference environmental conditions . 17
17 4.1.8 Classification for radio-frequency tests . 17
18 4.2 Marking . 18
19 4.3 Static pressure . 18
20 4.4 Temperature . 18
21 4.5 Relative humidity . 18
22 4.6 Electrostatic discharge . 18
23 4.7 A.C.-power-frequency and radio-frequency fields . 18
24 4.8 Radio-frequency emissions and disturbances to a public power supply . 19
25 4.9 Directional response . 19
26 4.10 Frequency weightings. 19
27 4.11 Corrections to indicated levels . 20
28 4.11.1 General . 20
29 4.11.2 Windscreens . 20
30 4.11.3 Corrections for use during periodic testing . 21
31 4.12 Linearity of response to steady signals . 21
32 4.13 Under-range indication . 21
33 4.14 Time-weightings F and S . 21
34 4.15 Response to short duration signals for indications of time-averaged sound
35 levels, sound exposure levels, and time-weighted sound levels . 21
36 4.16 Response to short duration signals for indications of time-averaged non-
37 equal-energy sound levels . 22
38 4.17 Overload indication . 23
39 4.18 C-weighted peak sound level . 23
40 4.18.1 Deviation from reference differences . 23
41 4.18.2 Repeatability . 23
42 4.19 Stability during continuous operation . 23
43 4.20 High-level stability . 23
44 4.21 Reset facility . 23
45 4.22 Analogue or digital output . 23
46 4.23 Timing facilities . 23
47 4.24 Crosstalk . 24
48 4.25 Power supply . 24
49 4.26 Pause and resumption of time averaging and time integration . 24
50 4.27 Instruction Manual . 24

IEC CDV 61252 © IEC 2024 – 3 – 29/1180/CDV
51 4.27.1 General . 24
52 4.27.2 Specifications . 24
53 4.27.3 Information for operation . 26
54 4.27.4 Information for use with auxiliary devices . 27
55 4.27.5 Information for testing . 27
56 5 Pattern-evaluation tests . 28
57 5.1 General requirements . 28
58 5.1.1 Submission for testing . 28
59 5.1.2 Display device . 29
60 5.1.3 Configuration . 29
61 5.1.4 Design features . 29
62 5.1.5 Adjustment at the calibration check frequency . 30
63 5.1.6 Determination of conformance . 30
64 5.1.7 Environmental conditions . 31
65 5.1.8 Laboratory equipment . 31
66 5.2 Marking and information in the Instruction Manual . 31
67 5.3 Static pressure . 32
68 5.4 Temperature . 32
69 5.5 Relative humidity . 32
70 5.6 Electrostatic discharge . 32
71 5.7 Influence of a.c-power-frequency and radio-frequency fields . 32
72 5.8 Radio-frequency emissions and public power supply disturbances . 32
73 5.9 Directional response . 32
74 5.10 Frequency weightings. 32
75 5.10.1 Acoustical signal tests of frequency weightings . 32
76 5.10.2 Electrical signal tests of frequency weightings . 32
77 5.11 Corrections to indicated levels . 33
78 5.12 Linearity of response to steady signals . 33
79 5.13 Under-range indication . 33
80 5.14 Decay time constants for time weightings F and S . 33
81 5.15 Response to short-duration signals for indications of time-averaged sound
82 levels, sound exposure levels, and time-weighted sound levels . 33
83 5.16 Response to short-duration signals for indications of time-averaged non-
84 equal-energy sound levels . 33
85 5.17 Overload indication . 34
86 5.18 C-weighted peak sound level . 34
87 5.18.1 Deviation from reference differences . 34
88 5.18.2 Repeatability . 34
89 5.19 Stability during continuous operation . 34
90 5.20 High-level stability . 34
91 5.21 Reset facility . 34
92 5.22 Outputs . 35
93 5.23 Timing facilities . 35
94 5.24 Crosstalk in multi-channel personal sound exposure meters . 35
95 5.25 Power supply . 35
96 5.26 Pause and resumption of time averaging and time integration . 35
97 5.27 Pattern evaluation report . 35
98 6 Periodic tests . 36
99 6.1 General requirements . 36
100 6.1.1 Submission for testing . 3
...