The Silenta Ergomax 9804000 in Grey is a headband eardefender with a SNR of 33 db.
Highlights
- Dielectric hearing protector, can be used in high voltage environments
- Prize-winning design
- Comfortable to use over longer period of time
- Attenuates also efficiently in low frequencies
Product details
- Grey, Silenta p/n 9804000
- Slack-free 9-position telescopic adjustment
- Cups ABS plastic
- Weight, net 231 g, gross 310 g
- Nato Stock Number 4240-58-000-0717
Attenuation
- SNR 33 dB / NRR 26 dB. The detailed attenuation values are presented below in the table. They were obtained under laboratory conditions and are for comparison purposes only. The SNR of this product is 33dB (superior) and it is designed for extremely noisy environments, such as industries, engine rooms and air traffic. However, the user is responsible for the suitability of the hearing protector for a specific purpose.
Maintenance
- We recommend to replace the cushions as necessary, at least every 6 months
- The recommended maximum shelf life is 5 years from putting into service
ATTENUATION VALUES
| ATTENUATION | H = 36 db | M = 30 db | L = 22 db | SNR = 33 db | |||||
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 3150 | 4000 | 6300 | 8000 |
| Mean attenuation (dB) | 20.4 | 22.0 | 32.7 | 41.1 | 37.5 | 39.4 | 38.6 | 33.6 | 37.2 |
| Std. Deviation | 3.7 | 2.6 | 3.0 | 2.4 | 2.6 | 2.1 | 2.9 | 3.2 | 2.5 |
| APV-value (84%) | 16.7 | 19.4 | 29.7 | 38.7 | 34.9 | 37.3 | 35.7 | 30.4 | 34.7 |
