The noise is the sound is generated by the vibration of the object. Measure the sound whether there is damage to the ear of our people have two indicators: frequency and intensity. The frequency is the number of vibrations of sound waves in the second, expressed in hertz (Hz), we can understand the frequency for tone, high-frequency sound will be sharp, low-frequency, voice thick. The sound intensity points negative (dB) to said, represents the size of the pressure or the intensity of the acoustic wave. In everyday life, we understand it as a volume, some soft, some loud. When the high-frequency or intensity of the sound to a certain intensity, it becomes harmful to our noise. Noise hazards on our body strength also depends on other factors, such as exposure to the length of time in noisy environments, and the longer the exposure, the greater the dangers; types of noise, continuity, change, or pulse noise; sound The distance from the source, the more close to the sound source, the greater the dangers; everyone the noise sensitive strength as well as hearing damage situation such as ear infection or inflammation.

       The sound is harmful to the ear:

       1) More than 85dB of sound is harmful

       2) Sound dB higher, the faster the hearing loss:

       The ① dB sound energy to take common logarithm "grade" units

       ② exposed 100dBA environment 2 hours with eight hours 90dBA environment hazards effect is the same as

       The ears allow exposure time exceed 85dBA environment:

 

       The impact of noise on the great work noise adversely affected include: communication difficulties, difficulty concentrating, fatigue, discomfort, tension, reduce production efficiency, and could easily lead to accidents at work. The noise will cause many adverse effects on our body. So employees operating environment noise assessment measured noise is between 85 to 90 decibels, the staff should be prepared to hearing protective equipment; If the measured noise at 90 decibels or more, the staff must use hearing protection equipment, and in the work The region marked the noise danger zone.

       The most common hearing protection supplies two categories: earplugs and earmuffs. Which includes repeated use earplugs and disposable two. A good hearing protective equipment, either earplugs or earmuffs should have the following characteristics:

       Adhesion of the ear is better;

       ② can effectively filter noise;

       The ③ wear comfortable;

       ④ use is simple;

       (5) other protective equipment, such as helmets, masks, helmets good to be used in conjunction.

       Hearing protection products selection methods need to be selected based on the environment, personnel requirements:

       ① If you need a long time to wear can use foam earplugs and reusable earplugs, not suitable for wearing earmuffs;

       ② frequent wear and harvesting suitable for wearing earmuffs, not suitable for wearing foam earplugs and reusable earplugs;

       (3) chemical liquid splash occasions or dirty environment suitable for wearing earmuffs, not suitable for wearing foam earplugs and reusable earplugs;

       ④ ear canal employees suffering from the disease for wearing earmuffs, not suitable for wearing foam earplugs and reusable earplugs;

       Esen PPE engineers will work with you, assess all the risks faced by your workshop. And listen to the other requirements of the first-line operators outside for security, to provide you with the most comprehensive solutions for hearing protection supplies.