Datasheet

Occupational Health Group
3M United Kingdom plc
3M Centre
Cain Road, Bracknell
Berkshire, RG12 8HT
Tel: [phone]
www.3M.co.uk/ohes
Please recycle.
© 3M 2009. All rights reserved.
Accessories/Replacement Parts
Technical Datasheet
Occupational Health Group
3M Ireland Limited
The Iveagh Building
The Park, Carrickmines
Dublin 18
Tel: [phone]
The cushions and inserts on the Optime range II can
be replaced with the HY52 Hygiene Kit for improved
comfort and reassured protection.
The HY100A and HY100A-01 Hygiene Pads can be
placed on the cushions to help absorb moisture and
sweat.
Peltor™ Optime™ II
CHOPTIMEIIDS Iss 1
Key
APVf = Assumed Protection Value
Mf = Mean attenuation value
sf = Standard deviation
H = High-frequency attenuation value (predicted
noise level reduction for noise with
L(C) – L(A) = -2dB)
M = Medium-frequency attenuation value (predicted
noise level reduction for noise with
L(C) – L(A) = +2dB)
L = Low-frequency attenuation value (predicted noise
level reduction for noise with L(C) – L(A) = +10dB)
SNR = Single Number Rating (the value that is
subtracted from the measured C-weighted sound
pressure level, L(C) in order to estimate the effective
A-weighted sound pressure level inside the ear).