Sordin SUPREME 75300, Руководство пользователя

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THE FOLLOWING SUPPLEMENTARY INFORMATION APPLIES TO SUPREME, ONLY IN USA/CAN:
Tested according to ANSI Specifications, ANSI S3.19-1974
Information required by E.P.A:
The level of noise entering a person’s ear, when hearing protection is worn as directed, is closely approxi-
mated by the difference between the A-weighted environmental level and the NRR. Example: The environ-
mental noise level at the ear is 92 dB(A). The NRR is 23 decibels (dB). The level of noise entering the ear is
approximately equal to 69 dB(A).
CAUTION:
For noise environments dominated by frequencies below 500 Hz, the C-weighted environmental noise level
should be used. Improper fit of this device will reduce its effectiveness in attenuating noise. Although hearing
protections can be recommended for protection against harmful effect of impulse noise, the Noise Reduction
Rating (NRR) is based on the attenuation of continuous noise and may not be an accurate indicator of the
protection attainable against impulsive noise, such as gunfire.
ATTENUATION DATA – Supreme Pro #75302
ATTENUATION DATA – Supreme Pro #76302
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
Mean (dB) 11,1 16,5 23,1 25,0 29,5 33,9 35,5 38,3 38,7 18
Standard
deviation (dB)
2,6 3,0 3,2 2,8 4,1 3,1 3,6 4,0 3,2
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
Mean (dB) 14,7 17,2 23,5 27,3 34,7 38,5 41,5 41,7 19
Standard
deviation (dB)
3,7 2,1 2,9 2,5 2,6 2,8 3,7 1,6 2,5
#75302
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#76302
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