3M PELTOR WS LiteCom Plus - Page 4

Fit Check
When hearing protectors are correctly worn, your voice
should sound hollow and sounds around you should not
sound as loud as before.
Hearing Protector Fit Testing the 3M
™
E-A-Rt
™
Dual-Ear Validation System
The success of your hearing conservation program requires
more than oering earplugs or earmus. Each worker
needs to wear the most eective hearing protector for the
environment and the correct t for their unique anatomy.
With 3M
™
E-A-Rt
™
Dual-Ear Validation System, you can
quickly identify how much protection each worker receives
from their 3M hearing protectors.
The Technology Behind 3M
™
E-A-Rt
™
The 3M
™
E-A-Rt
™
Dual-Ear Validation System is based on
Field Microphone-In-Real Ear (F-MIRE) technology that
measures the eectiveness of hearing protectors from inside
a worker’s ears, providing accurate, quantitative results.
The tester wears a pair of modied 3M
™
probed hearing
protectors connected to a dual-element microphone. A
loudspeaker is placed in front of the tester. When it emits a
broadband noise, the dual-element microphone measures the
signal in the ear canal and outside the ear plug. In less than
ve seconds, the dierence between the two measurements
is calculated and a Personal Attenuation Rating (PAR) is
displayed.
It Starts with PAR
The 3M
™
E-A-Rt
™
Validation System puts the worker in the
context of their noise environment and helps you understand
their level of attenuation.
The results you get from the 3M
™
E-A-Rt
™
is displayed as a
PAR. The PAR is a numerical value that shows the reduction in
sound level within the ear when a hearing protector is worn.
The resulting PAR, combined with the worker’s exposure
to noise, is used to determine if a worker is receiving
appropriate protection from the noise hazard.
Knowing the PAR lets you identify workers who are
inadequately protected, so you can provide real-time
intervention and training.
Key Benets of the 3M
™
E-A-Rt
™
Dual-Ear Validation System include:
• Tests both ears simultaneously in less than 5 seconds
• Science-based, quantitative testing
• Fast, clear, and accurate results
• Tests 7 frequencies 125Hz to 8000Hz
• 3M
™
Earplug, earmu and headset (comms) testing
capability
Contact your 3M Personal Safety Specialist to nd out more
about our 3M
™
E-A-Rt
™
Dual-Ear Validation System or for
assistance in solving your complex or day-to-day hearing
conservation challenges