Harbor Freight Tools Reusable Corded Earplugs Manuel télécharger pdf

REUSABLE CORDED EARPLUGS

The EPA has selected the NRR as the measure of a hearing protector’s noise reducing capabilities.

Harbor Freight Tools makes no warranties as to the suitability of the NRR as a measure of actual

workplace protection since such protection is highly dependent on user training, motivation, and

utilization. A better estimate of workplace protection can be obtained by derating the labeled NRR

by 50%.

The NRR calculated from this attenuation data is 25. Improper fit of this device will reduce its

effectiveness in attenuating noise. Consult instructions for proper fit.

The level of noise entering a person’s ear, when a hearing protector is worn as directed, is closely

approximated by the difference between the A-weighted environmental noise and the NRR.

4791-91.3SISNAATADNOITAUNETTA

tseT

)zH(seicneuqerF

521052005000100020513000400360008RRN

naeM

)Bd(noitaunettA

0.15.018.

222.929.634.538.632.431.63

dradnaS

)Bd(noitaiveD

46.264.127.136.190.218.116.240.142.1

Example:

1.) The environmental noise level as measured at the ear is 92 dBA.

2.) The NRR is 25 decibels (dB).

3.) The level of noise entering the ear is approximately equal to 67 dBA.

CAUTION: For noise environments dominated by frequencies below 500 Hz, the C- weighted

environmental noise level should be used.

The NRR used in the above example was achieved under laboratory conditions.

Although hearing protectors can be recommended for protection against 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.

ITEM 94328

1 2

Résumé du contenu

Page 1 - ITEM 94328

REUSABLE CORDED EARPLUGSThe EPA has selected the NRR as the measure of a hearing protector’s noise reducing capabilities.Harbor Freight Tools makes no

Page 2 - Wear Instructions

Wear Instructions1. Place smaller flange in ear canal, push and twist towards thecenter of the head until the earplug seals snugly.2. After both earpl

Commentaires sur ces manuels

Pas de commentaire

Harbor Freight Tools Reusable Corded Earplugs Manuel

Naviguer en ligne ou télécharger Manuel pour Non Harbor Freight Tools Reusable Corded Earplugs. Harbor Freight Tools Reusable Corded Earplugs Product manual Manuel d'utilisatio

Résumé du contenu

Commentaires sur ces manuels

Produits connexes et manuels pour Non Harbor Freight Tools Reusable Corded Earplugs