3M Peltor WS ProTac XPI Manual page 12

EN
Do NOT dispose your product as unsorted municipal waste!
The crossed-out wheeled bin symbol indicates that all EEE
(Electrical and Electronic Equipment), batteries, and
accumulators must be disposed of according to local law by
the use of available return and collection systems.
LABORATORY ATTENUATION
The attenuation rating (SNR/NRR) was obtained with the
device powered off.
European Standard EN 352
3M strongly recommends personal fit testing of hearing
protectors. Research suggests that users may receive less
noise reduction than indicated by the attenuation label
value(s) on the packaging due to variation in fit, fitting skill,
and motivation of the user. Refer to applicable regulations for
guidance on how to adjust attenuation label values. In the
absence of applicable regulations, it is recommended that the
SNR be reduced to better estimate typical protection.
Explanation of the attenuation data (Table A)
European Standard EN 352
(A:1) Model designation
(A:2) Frequency (Hz)
(A:3) Mean attenuation (dB)
(A:4) Standard deviation (dB)
(A:5) Assumed protection value, APV
(A:6) Weight (g)
H = Hearing protection estimation for high frequency sounds
(ƒ ≥ 2000 Hz).
M = Hearing protection estimation for medium frequency
sounds (500 Hz < ƒ < 2000 Hz).
L = Hearing protection estimation for low frequency sounds
(ƒ ≤ 500 Hz).
(E) Criterion level
H = Criterion level for high frequency noise
M = Criterion level for medium frequency noise
L = Criterion level for low frequency noise
USA Standard ANSI S3.19-1974 (Table B)
U.S. EPA specifies the NRR as the measure of hearing
protector noise reduction. However, 3M makes no warranties
as to the suitability of the NRR for this purpose. 3M strongly
recommends personal fit testing of hearing protectors.
Research suggests that users may receive less noise
reduction than indicated by the attenuation label value(s) on
the packaging due to variation in fit, fitting skill, and motivation
of the user. Refer to applicable regulations for guidance on
how to adjust attenuation label values. It is recommended
that the NRR be reduced by 50% to better estimate typical
protection.
(B:1) Frequency (Hz)
(B:2) Mean attenuation (dB)
(B:3) Standard deviation (dB)
The level of noise entering a person's ear, when hearing
protector is worn as directed, is closely approximated by the
difference between the A-weighted environmental noise level
and the NRR.
Example
1. The environmental noise level as measured at the
ear is 92 dB(A).
2. The NRR is 32 decibels (dB).
3. The level of noise entering the ear is approximately equal
to 60 dB(A).
Australia/New Zealand Standard AS/NZS 1270:2002
(Table C)
(C:1) Test frequency
(C:2) Mean attenuation
(C:3) Standard deviation
(C:4) Mean minus SD
Explanation of electrical audio input level (Table D)
European Standard EN 352-6
(D:1) Input signal level U (mV, RMS)
(D:2) Mean sound pressure level (dB(A))
(D:3) Sound pressure standard deviation (dB)
(D:4) Input signal level for which the mean plus one standard
deviation equals 82 dB(A)
Explanation of criterion levels (Table E)
European Standard EN 352-4
Criterion level is the sound pressure level in dB(A) of the
noise environment resulting in 85 dB(A) effective to the ear
while wearing the hearing protectors. Three different criterion
levels are defined related to the frequency content of the
noise.
H = criterion level for high frequency noise.
M = criterion level for medium frequency noise.
L = criterion level for low frequency noise.
Explanation of the industrial safety hard hat attachment
(Table F)
European Standard EN 352-3
(F:1) Helmet manufacturer
(F:2) Helmet model
(F:3) Helmet attachment
(F:4) Head size: S = Small, M = Medium, L = Large
NOTE: These earmuffs should be fitted to, and used only with
the industrial safety helmets listed in Table F. These earmuffs
were tested in combination with the following industrial safety
hard hats, and may give different levels of protection if fitted
to different hard hats.
NOTE: When selecting accessories, such as headgear-
mounted hearing protection, please consult the NIOSH
approval label or consult 3M Techinal Service for approved
configurations.
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