ARGONAUT™ IC2 |USER MANUAL | 3
Before Proceeding
The use of any hearing protective device will not guarantee adequate
protection for hearing loss for all persons under all circumstances.
Consult your physician frequently when being exposed to high noise
levels. If exposure to high noise levels occurs during employment
activities, consult your employer regularly as well.
Example:
1. The environmental noise level as measured at the ear is 92 dBA.
2. The NRR is 35 decibels (dB).
3. The level of noise entering the ear is approximately equal to 57
dB(A).
Always evaluate the adequacy of your protective gear before
entering hazardous environments.
The wearer should ensure that:
• The headset and earplugs are tted and maintained in accordance
with the manufacturer’s instructions. Improper t of this device will
reduce its effectiveness in attenuating noise. Consult the included
instructions for proper t.
• The headset and earplugs have been inspected for serviceability.
• The headset and earplugs are worn at all times in noisy
surroundings.
US Federal Law requires the following additional statements:
The level of noise entering a person’s ear, when hearing protector is
worn as directed, is closely approximated by the difference between
the A-weighted environmental noise level and the NRR.
Caution: For noise environments dominated by frequencies below
500 Hz the C-weighted environmental noise level should be used.
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 gunre.
