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TechnicalDataThelevelofnoiseenteringaperson’sear,whenhearingprotectioniswornasdirecte...
Technical Data
The level of noise entering a person’s ear, when hearing protection is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR.
Example:
1.The environment noise level as measured at the ear is 92 dBA.
2.The NRR is 29 decibels (dB)
3.The level of noise entering the ear is approximately equal to: 63 dBA
Caution: For noise environment 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. Consult the enclosed instructions for propor fil. Although hearing. Protectors can be recommended for protection against the harmful effects of impulsive 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.
The Noise Reduction Rating (NRR) calculated from these attenuation data is 29 dB. Ear plugs must be properly fitted to attenuate noise effectively
Refer to instructions.
Caution: Keep away from infants and small children. May get caught in windpipe
Corded Foam Ear Plugs Bouchons en mousse et
The noise reduction rating (NRR) calculated from the attenuation data is 29 db
3M 1110 Ear Plugs must be fitted properly to attenuate noise effectively. Refer to instructions.
THE RANGE OF NOISE REDUCTION RATING FOR EXISTING HEARING PROTECTORS IS APPROXIMATELY 0 TO 30 ( HIGH NUMBERS DENOTE GREATER EFFECTIVENESS)
ROLL
INSERT
HOLD FOR 30 SECONDS.
CORRECT
INCORRECT
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The level of noise entering a person’s ear, when hearing protection is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR.
Example:
1.The environment noise level as measured at the ear is 92 dBA.
2.The NRR is 29 decibels (dB)
3.The level of noise entering the ear is approximately equal to: 63 dBA
Caution: For noise environment 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. Consult the enclosed instructions for propor fil. Although hearing. Protectors can be recommended for protection against the harmful effects of impulsive 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.
The Noise Reduction Rating (NRR) calculated from these attenuation data is 29 dB. Ear plugs must be properly fitted to attenuate noise effectively
Refer to instructions.
Caution: Keep away from infants and small children. May get caught in windpipe
Corded Foam Ear Plugs Bouchons en mousse et
The noise reduction rating (NRR) calculated from the attenuation data is 29 db
3M 1110 Ear Plugs must be fitted properly to attenuate noise effectively. Refer to instructions.
THE RANGE OF NOISE REDUCTION RATING FOR EXISTING HEARING PROTECTORS IS APPROXIMATELY 0 TO 30 ( HIGH NUMBERS DENOTE GREATER EFFECTIVENESS)
ROLL
INSERT
HOLD FOR 30 SECONDS.
CORRECT
INCORRECT
（请不要用”在线翻译”的结果回答我） 展开
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