3M PELTOR TEP-300 Manual Del Usuario página 3

LABORATORY ATTENUATION
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.
The attenuation rating (NRR) was obtained with the device powered off.
A:1 Frequency (Hz) (ƒ)
A:2 Mean attenuation (dB)
(Mf)
A:3 Standard deviation
(dB) (sf)
A:B 3M™ PELTOR™ CCC-GRM-25 Communication Eartips
A:1 Frequency (Hz) (ƒ)
A:2 Mean attenuation (dB)
(Mf)
A:3 Standard deviation
(dB) (sf)
A:1 Frequency (Hz) (ƒ)
A:2 Mean attenuation (dB)
(Mf)
A:3 Standard deviation
(dB) (sf)
Standard ANSI S3.19-1974
A:A 3M™ Skull Screw™ Communication Eartips
125 250 500
35.7 35.0 40.7
5.4 5.2 5.4
Standard ANSI S3.19-1974
125 250 500
35.0 31.8 37.4
4.6 4.2 5.2
Standard ANSI S3.19-1974
A:C 3M™ UltraFit™ Communication Eartips
125 250 500
34.3 31.9 35.2
6.1 6.1 6.1
1000 2000 3150 4000
39.0 38.3 41.7 41.4
3.9 2.5 4.4 3.7
1000 2000 3150 4000
37.4 36.0 39.2 40.4
5.1 3.3 4.9 4.8
1000 2000 3150 4000
34.1 34.5 38.6 35.5
5.2 4.8 4.4 3.9
6300 8000 NRR CSA Class
44.0 45.9
30 dB
4.1 4.1
6300 8000 NRR CSA Class
44.9 45.8
27 dB
3.6 2.9
6300 8000 NRR CSA Class
38.2 39.3
23 dB
3.9 3.0
AL
AL
AL