PAR in mins
March 1st 2008 E.A.RFit hearing protection
validation system from E.A.R
enables an employer to know the
level of protection workers are
receiving personally and does not
rely on other people's statistical data.
Each ear canal shape is different
and fitting techniques vary. This
can result in different protection
levels for each worker. E.A.RFit is
designed to take away the
uncertainty. It documents each
worker's Personal Attenuation
Rating in minutes. The test can be
performed on a variety of E.A.R
hearing protectors, including the
Classic, E.A.Rsoft and UltraFit
models.
E.A.RFit is an F-MIRE (fieldmicrophone-
in-real-ear) test system
with dual element microphone
measuring sound inside and
outside the ear. It takes just 8sec to
obtain data at seven standard (125
to 8000Hz) frequencies. More articles from 3M UK Ltd: | 
