Hearing protectors - Testing - Part 1: Physical test methods

This European Standard EN 13819-1 specifies physical test methods for hearing protectors. The purpose of these tests is to enable assessment of the performance of the hearing protector as specified in the appropriate product standard.

Gehörschützer - Prüfung - Teil 1: Physikalische Prüfverfahren

Diese Europäische Norm EN 13819-1 legt physikalische Prüfverfahren für Gehörschützer fest. Zweck dieser Prüfungen ist, die Beurteilung der Leistungsfähigkeit des Gehörschützers, wie sie in der jeweiligen Produktnorm festgelegt ist, zu ermöglichen.

Protecteurs individuels contre le bruit - Essais - Partie 1: Méthodes d'essai physique

La présente Norme européenne EN 13819‐1 décrit des méthodes d'essai physique pour les protecteurs contre le bruit. L'objectif de ces essais est de permettre l'évaluation des performances du protecteur contre le bruit comme spécifiées dans la norme de produit appropriée.

Varovala sluha - Preskušanje - 1. del: Fizikalne preskusne metode

General Information

Status
Published
Public Enquiry End Date
19-Mar-2018
Publication Date
16-Dec-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Dec-2020
Due Date
05-Feb-2021
Completion Date
17-Dec-2020

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SLOVENSKI STANDARD
SIST EN 13819-1:2021
01-januar-2021
Nadomešča:
SIST EN 13819-1:2003
Varovala sluha - Preskušanje - 1. del: Fizikalne preskusne metode
Hearing protectors - Testing - Part 1: Physical test methods
Gehörschützer - Prüfung - Teil 1: Physikalische Prüfverfahren

Protecteurs individuels contre le bruit - Essais - Partie 1: Méthodes d'essai physique

Ta slovenski standard je istoveten z: EN 13819-1:2020
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
SIST EN 13819-1:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 13819-1:2021
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SIST EN 13819-1:2021
EN 13819-1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2020
EUROPÄISCHE NORM
ICS 13.340.20 Supersedes EN 13819-1:2002
English Version
Hearing protectors - Testing - Part 1: Physical test
methods

Protecteurs individuels contre le bruit - Essais - Partie Gehörschützer - Prüfung - Teil 1: Physikalische

1 : Méthodes d'essai physiques Prüfverfahren
This European Standard was approved by CEN on 24 February 2020.

CEN 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 CEN-CENELEC Management Centre or to any CEN

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 CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13819-1:2020 E

worldwide for CEN national Members.
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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Earmuffs ............................................................................................................................................................. 6

4.1 Specimens, conditioning and scheme of testing .................................................................................. 6

4.2 Adjustability ................................................................................................................................................... 13

4.3 Cup rotation ................................................................................................................................................... 23

4.4 Headband force ............................................................................................................................................. 27

4.5 Cushion pressure .......................................................................................................................................... 31

4.6 Resistance to damage when dropped ................................................................................................... 34

4.7 Resistance to damage when dropped at low temperature (optional) ...................................... 36

4.8 Headband flexing ......................................................................................................................................... 38

4.9 Stand-by mechanism durability test (mounted earmuffs only) .................................................. 40

4.10 Water immersion ......................................................................................................................................... 40

4.11 Water immersion - headband under stress (optional) .................................................................. 41

4.12 Resistance to leakage (fluid filled cushions only) ............................................................................ 41

4.13 Ignitability ...................................................................................................................................................... 42

5 Earplugs ........................................................................................................................................................... 43

5.1 Specimens, conditioning and scheme of testing ............................................................................... 43

5.2 Assessment of nominal diameter designation .................................................................................. 45

5.3 Range of fitting of headband earplugs .................................................................................................. 45

5.4 Resistance to damage when dropped ................................................................................................... 48

5.5 Resistance to damage when dropped at low temperature (optional) ...................................... 48

5.6 Ignitability ...................................................................................................................................................... 49

Annex A (informative) Uncertainty of measurement and interpretation of test results ................ 50

Bibliography ................................................................................................................................................................. 52

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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
European foreword

This document (EN 13819-1:2020) has been prepared by Technical Committee CEN/TC 159 “Hearing

protectors”, the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by May 2021, and conflicting national standards shall be

withdrawn at the latest by May 2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 13819-1:2002.

In comparison with the previous edition, the following technical modifications have been made:

— all figures revised and clarified where necessary;

— flowcharts for test procedures revised and additional ones added for single tests;

— new definition 3.6 external vertical distance added;

— 4 limitation to industrial helmets eliminated, so that the test method can be applied to any

carrier;
— test headforms in 4.2.2.2 updated to EN 960:2006;
— 4.2.2.3 pinna simulators: allow for 3D printing;
— Figure 5 and 13 error corrected: 5° instead of 15°;
— Table 3 specifications on adjustability of mounted earmuffs changed;

— 4.13 and 5.6 changes and relaxations on the requirements for the equipment for ignitability testing:

form of steel rod and temperature measuring device;

— 5.1.3 clarification on testing schemes added in order to specify the tests to be carried out with

the number of samples;
— 5.2.3 clarification for flanged earplugs added;
— Tables 6 and 7 error in title corrected;
— Figure 9 of EN 13819-1:2002 deleted;
— Annex ZA of EN 13819-1:2002 deleted.

NOTE The technical changes referred to include the significant technical changes from the EN revised but is

not an exhaustive list of all modifications from the previous edition.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
Introduction

This document specifies procedures for the testing of personal hearing protection devices in relation to

Regulation (EU) 2016/425 - Personal Protective Equipment.

A series of standards EN 352 describes product requirements of hearing protectors:

— EN 352-1, Hearing protectors — General requirements — Part 1: Earmuffs
— EN 352-2, Hearing protectors — General requirements — Part 2: Earplugs

— EN 352-3, Hearing protectors — General requirements — Part 3: Earmuffs attached to head

protection and/or face protection devices

— EN 352-4, Hearing protectors — Safety requirements — Part 4: Level-dependent earmuffs

— EN 352-5, Hearing protectors — Safety requirements — Part 5: Active noise reduction earmuffs

— EN 352-6, Hearing protectors — Safety requirements — Part 6: Earmuffs with safety-related audio

input

— EN 352-7, Hearing protectors — Safety requirements — Part 7: Level-dependent earplugs

— EN 352-8, Hearing protectors — Safety requirements — Part 8: Entertainment audio earmuffs

— EN 352-9, Hearing protectors — Safety requirements — Part 9: Earplugs with safety-related audio

input

— EN 352-10, Hearing protectors — Safety requirements — Part 10: Entertainment audio earplugs

Test methods for these requirements are described in the series of standards EN 13819:

— EN 13819-1, Hearing protectors — Testing — Part 1: Physical test methods
— EN 13819-2, Hearing protectors — Testing — Part 2: Acoustic test methods

— EN 13819-3, Hearing protectors — Testing — Part 3: Supplementary acoustic test methods

An associated standard EN 458 covers selection, use, care and maintenance of hearing protectors.

EN 13819-1 is intended as a supplement to the specific product standards for hearing protectors.

The performance requirements are given in the hearing protector product standard.

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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
1 Scope

This document EN 13819-1 specifies physical test methods for hearing protectors. The purpose of these

tests is to enable assessment of the performance of the hearing protector as specified in the appropriate

product standard.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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.

EN 352-1:2020, Hearing protectors — General requirements — Part 1: Earmuffs
EN 352-2:2020, Hearing protectors — General requirements — Part 2: Earplugs

EN 352-3:2020, Hearing protectors — General requirements — Part 3: Earmuffs attached to head

protection and/or face protection devices
EN 960:2006, Headforms for use in the testing of protective helmets
EN 13819-2:2020, Hearing protectors — Testing — Part 2: Acoustic test methods
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 352-1, EN 352-2, EN 352-3

and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
headband earmuffs
earmuffs satisfying the requirements of EN 352-1
3.2
mounted earmuffs

earmuffs fitted to a carrier (head or face protection device) by means of cup supporting arms such that

the combination satisfies the requirements of EN 352-3
3.3
test height

vertical distance between the axis through the centres of the mounting holes of the pinna simulators in

the mounting fixture or test headform shown in Figures 5 or 6 respectively, and the top of the headband

support pad or headform

Note 1 to entry: The dimensions given in Tables 1, 2, 3, 4, 6 and 7 correspond with the definitions given in 3.3,

3.4 and 3.5 (as appropriate).
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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
3.4
test width

horizontal distance between the vertical axes through the centres of the mounting holes for the pinna

simulators in the mounting fixture or test headform shown in Figure 5 or 6 respectively

Note 1 to entry: The dimensions given in Tables 1, 2, 3, 4, 6 and 7 correspond with the definitions given in 3.3,

3.4 and 3.5 (as appropriate).
3.5
test depth

vertical distance between the axis through the centres of the mounting holes of the pinna simulators

and the top of the headband support, with the pinna simulators attached with their shorter axes vertical

shown in Figure 8

Note 1 to entry: The dimensions given in Tables 1, 2, 3, 4, 6 and 7 correspond with the definitions given in 3.3,

3.4 and 3.5 (as appropriate).
3.6
external vertical distance

vertical distance between the top of the test headform on which the carrier is mounted and the highest

point on the outside surface of the carrier shell
4 Earmuffs
4.1 Specimens, conditioning and scheme of testing
4.1.1 Specimens

Headband earmuffs and mounted earmuffs shall be submitted for testing in the condition in which they

are offered for sale.

For headband earmuffs, 10 specimens shall be submitted and they shall be numbered 1 to 10.

For mounted earmuffs, 10 basic combination specimens (earmuffs and carriers (e.g. helmets)) shall be

submitted and they shall be numbered 1 to 10 (basic).

If the same model of mounted earmuffs is to be tested with another model or size of carrier, 6 further

supplementary combination specimens (earmuffs and carriers) for each model or size of carrier shall be

submitted. These shall be numbered (in sets) 1 to 6 (supplementary).
4.1.2 Conditioning and testing atmosphere

All specimens shall be conditioned and tested in an atmosphere having a temperature of (22 ± 5) °C and

a relative humidity (r.h.) of not more than 85 %, unless required otherwise by the test procedure.

4.1.3 Scheme of testing

4.1.3.1 The 10 headband earmuffs shall be conditioned and tested in accordance with 4.1.3.2 to

4.1.3.10 and Figure 1 (and if applicable Figure 4).

For mounted earmuffs, except as specified in the following paragraph, the scheme of testing for the 10

basic combination specimens and, if applicable, the sets of 6 supplementary combination specimens,

shall be as given in 4.1.3.2 to 4.1.3.10 and Figure 2 and 3 (and if applicable Figure 4).

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SIST EN 13819-1:2021
EN 13819-1:2020 (E)

In the case of carriers supplied in more than one size, one selected size shall be used for testing in a

basic combination (except for sound attenuation testing). All other carrier sizes shall be tested in a

supplementary combination (except for sound attenuation testing). Sound attenuation testing shall be

performed using the complete range of available carrier sizes (see EN 13819-2). If the mounted earmuff

incorporates a means to adjust the headband force, the force shall be adjusted to its minimum setting

for all stages of conditioning and testing, unless otherwise specified.

Testing may be discontinued in the event of a specimen failing to satisfy the respective requirement.

4.1.3.2 Unpack all earmuffs completely. For products fitted with batteries, the testing is to be

performed with batteries (except for water immersion and ignitability).

4.1.3.3 For headband earmuffs, each specimen shall be weighed and the mean mass of the 10

specimens shall be reported to the nearest gram.

4.1.3.4 For mounted earmuffs, each specimen (left and right earmuff without the carrier) shall be

weighed and the mean mass of the 10 specimens shall be reported to the nearest gram.

4.1.3.5 In the case of mounted earmuffs, the earmuffs shall be attached to the carriers in accordance

with the earmuffs manufacturer’s instructions. The cups/cup supporting arms shall be set to the

position with the least amount of stress (in-use, stand-by, parking etc.) as defined by the manufacturer.

4.1.3.6 All specimens shall be conditioned for a minimum of 4 h in the atmosphere specified in

4.1.2.

4.1.3.7 The scheme of testing for specimens 1 to 6 (headband earmuffs and mounted earmuffs,

basic and supplementary sets) shall be as follows:
a) test each specimen in accordance with 4.2, 4.3, 4.4 and 4.5;

b) test each specimen in accordance with 4.6, unless (optional) 4.7 is to be performed;

c) optionally, test each specimen in accordance with 4.7;

d) test each specimen in accordance with 4.8 or, if the specimens are mounted earmuffs which

incorporate a stand-by position, test in accordance with 4.9 (includes cup supporting arm flexing);

e) for earmuffs which rely on plastic parts to provide the headband force, test each specimen in

accordance with 4.10 or 4.11;

f) if 4.10 or 4.11 were performed, remove each specimen from the water bath noting the time of

removal and re-fit the cups (if removed). Remove excess water. If the liners were removed, re-fit

them;

g) condition each specimen for (24 ± 1) h, measured from the time of removal from the water bath in

f) or in case of earmuffs which do not rely on plastic parts to provide the headband force condition

each specimen for a minimum of 4 h, measured from the end of the headband flexing in d), under

the conditions specified in 4.1.2, and then measure the headband force in accordance with 4.4;

NOTE For multiple size range models, use only the setting of width and height which gave the highest

headband force in 4.4;

h) for mounted earmuffs set the cups/cup supporting arms to the mid-point of the range of their

adjustment, set in the position with the least amount of stress (in-use, stand-by, parking etc.).

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SIST EN 13819-1:2021
EN 13819-1:2020 (E)

4.1.3.8 The scheme of testing for all 10 headband earmuffs specimens or, in the case of mounted

earmuffs, all 10 basic specimens, shall be continued as follows:

a) measure the insertion loss of each cup of each specimen in accordance with EN 13819-2:2020, 4.1;

b) calculate the standard deviation of insertion loss for all 20 cups, using (N-1) weighting for the

sample data.

4.1.3.9 The scheme of testing for specimens 5 and 6, or, in the case of mounted earmuffs, both basic

and supplementary specimens 5 and 6, shall be continued as follows:

a) if appropriate, test both specimens or, in the case of mounted earmuffs, both basic (only)

specimens, in accordance with 4.12;

b) assess both specimens, or, in the case of mounted earmuffs, both basic and supplementary

specimens, for compliance with EN 352-1:2020, 4.2 or EN 352-3:2020, 4.2, as appropriate;

c) test both specimens in accordance with 4.13. If for supplementary combinations new materials are

introduced each combination shall also be tested in accordance with 4.13.

4.1.3.10 The scheme of testing for specimens 1 to 4, or, in the case of mounted earmuffs, both the

basic and, if required by EN 352-3:2020, 4.3.4, the supplementary specimens 1 to 4, shall be continued

as follows:

Measure the sound attenuation of the specimens in accordance with EN 13819-2:2020, 4.2.

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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
Figure 1 — Testing scheme flow chart for headband earmuffs
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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
Figure 2 — Testing scheme flow chart for mounted earmuffs – basic combinations
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SIST EN 13819-1:2021
EN 13819-1:2020 (E)

Figure 3 — Testing scheme flow chart for mounted earmuffs – supplementary combinations

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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
Key
store in position with least amount of stress
use adaptors for non-planar cushions, if applicable (i.a.)

Figure 4 — Testing scheme flow chart for earmuffs with adjustable headband force (headband

and mounted earmuffs)
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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
4.2 Adjustability
4.2.1 Principle

The ability of the earmuffs to be adjusted to fit specified test dimensions is assessed using a suitable

mounting fixture (headband earmuffs) or test headforms (mounted earmuffs).
4.2.2 Apparatus
4.2.2.1 Mounting fixture
The outline of an example is shown in Figure 5.
4.2.2.2 Test headforms

The test headforms shall be in accordance with the dimensions given in EN 960:2006, for sizes 505, 575

and 615 above the reference plane only and modified for width. Details are given in Figure 6 and

examples of mounted pinnas in Figures 7 and 8.

NOTE Additional parts of the headforms of EN 960:2006 can be used to support correct mounting of carriers

(e.g. the neck part).
4.2.2.3 Pinna simulators

The required dimensions are shown in Figure 10. A mounted pinna simulator is shown in Figure 11.

Alternatively, pinna simulators can be produced by 3D printing. An example is shown in Figure 12.

4.2.2.4 Non-planar cushion adaptor

For earmuffs with non-planar cushions, the manufacturer shall supply suitable adaptors which shall be

fitted to the mounting fixture, such that, when the earmuffs are fitted to the mounting fixture, and with

the plates of the latter set parallel, the centres of the openings of the earmuff cushions lie on the

horizontal axis through the centre of the force transducer.
4.2.3 Procedure
4.2.3.1 Headband earmuffs

4.2.3.1.1 Fit the pinna simulators to the plates of the apparatus so that their longer axes are vertical

for over-the-head and under-the-chin earmuffs or so that their shorter axes are vertical for behind-the-

head earmuffs (see Figure 7 resp. Figure 8 as examples).

4.2.3.1.2 Adjust the cups/headband to their longest position and, if the earmuffs incorporate a means

to adjust the headband force, adjust the force to its maximum setting.

4.2.3.1.3 Place the earmuffs on the fixture so that the headband is vertical and the pinna simulators

are enclosed by the cushions.

4.2.3.1.4 Adjust the separation of the plates and the height of the headband support to correspond in

turn with each of the combinations of dimensions of width and height respectively shown in Table 1 or

Table 2, as appropriate.
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SIST EN 13819-1:2021
EN 13819-1:2020 (E)

4.2.3.1.5 For each of the combinations of dimensions of width and height respectively, check whether

the range of adjustment of the cups/headband and of the width between the cushions enable the

earmuffs to be fitted so that:

a) for over-the-head earmuffs, the internal apex of the headband touches the headband support pad,

or, for behind-the-head or under-the-chin earmuffs, the internal apex of the headband touches or

lies beyond the headband support pad;

NOTE 1 Some earmuffs, because of their design, cannot be assessed correctly by this method. This applies for

example, to those behind-the-head earmuffs where the headband is designed to pass only around the back of

the neck. For these products this test is performed by using the appropriate test headforms as specified in

EN 960:2006, sizes 505, 575 and 615 (full headforms, including chin and neck), fitted with pinna simulators

at the heights given in Figure 6 appropriate to the earmuff size range.

b) the contact between the cushions and the plates of the fixture is continuous insofar as it provides

an unbroken barrier between the inside and outside perimeters of the cushions.

NOTE 2 Discontinuity in contact between the cushions and the plates is acceptable in the region where the

pinna simulator mounting area (46 mm × 10 mm) lies on the plates.

4.2.3.1.6 If the earmuffs incorporate a means to adjust the headband force, adjust the force to its

minimum setting and repeat steps 4.2.3.1.4 and 4.2.3.1.5.

Table 1 — Test dimensions – adjustability (over-the-head and under-the-chin earmuffs)

Dimensions in millimetres with a limit deviation of ± 1 mm
Test height Test width
mm mm
125 145 155
115 S S/M —
130 S/M S/M/L M/L
140 — M/L L
M indicates earmuffs of ‘medium’ size range.
S indicates earmuffs of 'small' size range.
L indicates earmuffs of 'large' size range.
– not applicable.
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SIST EN 13819-1:2021
EN 13819-1:2020 (E)
Table 2 — Test dimensions – adjustability (behind-the-head earmuffs)
Dimensions in millimetres with a limit deviation of ± 1 mm
Test depth Test width
mm mm
125 145 155
75 S S/M —
90 S/M S/M/L M/L
105 — M/L L
M indicates earmuffs of ‘medium’ size range.
S indicates earmuffs of 'small' size range.
L indicates earmuffs of 'large' size range.
– not applicable.

NOTE 1 The dimensions given in Tables 1 and 2 have been chosen to cover appropriate combinations of the

head dimensions of the 5th, 50th and 95th percentiles of the adult population.

NOTE 2 If non-planar cushion adaptors are fitted to the mounting fixture, test width is the dimension between

the two outermost points of the cushion adaptors measured along the horizontal axis through the centre of the

force transducer.
4.2.3.2 Mounted earmuffs

4.2.3.2.1 Fit the pinna simulators to the side plates of the test headforms so that their longer axes are

vertical and coincident with the transverse vertical axis of the headform. Adjust their vertical position

as necessary to correspond with the test heights given in Table 3.

4.2.3.2.2 If the earmuff carrier incorporates a means to adjust the harness, adjust it to give the

maximum external vertical distance, in accordance with the carrier manufacturer’s instructions (see

Figure 9), making sure that the harness is still in contact with the test headform. Fit the mounted

earmuff to the test headform and measure the vertical distance between the ear canal entrance and the

external surface of the carrier shell (see Figure 9 and Figure 13) to be used in 4.3.3. If the carrier does

not include a shell measure the vertical distance between the ear canal entrance and the external

surface of the carrier.

NOTE This adjustment assumes continuing compliance of these dimensions with the requirements of the

relevant carrier standard (for example EN 397).

4.2.3.2.3 If the mounted earmuffs incorporate a means to adjust the headband force, adjust the force

to its maximum setting.

4.2.3.2.4 Place the mounted earmuff on each headform in turn, in the as-worn position, and so that

the pinna simulators are enclosed by the cushions. Maintain the carrier in position by the application of

a force of nominally 50 N acting along the vertical axis.

4.2.3.2.5 For each of the combinations of dimensions of width and height respectively shown in

Table 3, check whether the adjustment of the cups/cup supporting arms and of the width between the

cushions enable the mounted earmuff to be fitted to the fixture so that:

a) the contact between the cushions and the plates of the headform is continuous insofar as it

provides an unbroken barrier between the inside and outside perimeters of the cushions;

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SIST EN 13819-1:2021
EN 13819-1:2020 (E)

NOTE Discontinuity in contact between the cushions and the plates is acceptable in the region where the

pinna simulator mounting area (46 mm × 10 mm) lies on the plates and in any region where a headband of

the carrier harness lies under the cushions
b) the earmuffs do not switch into the stand-by position.

4.2.3.2.6 If the mounted earmuffs incorporate a means to adjust the headband force, adjust the force

to its minimum setting and repeat steps 4.2.3.2.4 and 4.2.3.2.5.
Table 3 — Test dimensions – adjustability (mounted earmuffs)
Dimensions in millimetres with a limit deviation of ± 1 mm
Test height Test width
mm mm
125 145 155
115 S S —
130 M M M
140 — M L
Corresponding EN 960 test headform 505 575 615
M indicates earmuffs of ‘medium’ size range.
S indicates earmuffs of 'small' size range.
L indicates earmuffs of 'large' size range.
– not applicable.

NOTE 1 The dimensions given in Table 3 have been chosen to cover appropriate combinations of the head

dimensions of the 5th
...

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