Universal Ear Protectors - Technical Spec
Download this info as a PDF here
| F in Hz*/NEM Norm 352-2 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 | H | M | L | SNR | |
| Mf in dB | Universal | 12.3 | 13.2 | 14.6 | 17.5 | 20.9 | 19.2 | 23.5 | 16 | 13 | 11 | 16 |
| Sf in dB | . | 4.1 | 4.0 | 4.0 | 3.7 | 3.2 | 4.7 | 4.9 | . | . | . | . |
| APV in dB | . | 8.1 | 9.1 | 10.7 | 13.9 | 17.7 | 14.5 | 18.6 | . | . | . | . |
F in Hz |
Frequency in Hertz |
|
H |
Average attenuation characteristics in the higher freq. spectrum (x>2000Hz) |
|
M |
Average attenuation characteristics in themed-range freq. spectrum (500<x>2000Hz) |
|
L |
Average attenuation characteristics in the lower freq. spectrum (x<500Hz) |
|
SNR |
Average attenuation characteristics in the standard freq. spectrum (Single number rating) |
|
Mf in dB |
Average attenuation characteristics at given freq. f in decibel (ISO 4869-2: 1994) |
|
Sf in dB |
Standard deviation at given frequency f in decibel |
|
APVf in dB |
Average attenuation characteristics per freq. minus the standard deviation in decibel (Assumed protection value) |
|
These patented Universal Ear Plugs utilise a technology that replicates the natural resonance of the ear canal, so that sounds can be as clearly heard as the original but 16dB lower. Tested to Annex II of EC-directive 89/686/EC and prEN 352-2, for compliance, Universal Ear Plugs are an essential reuseable hearing protector for noisy environments that provides attenuation characteristics suitable for noise levels of up to 100dB(A) Supplied complete with handy carrying pouch, instructions and detachable cord |
Download this info as a PDF here
