Noise pollution detection in Dongguan

Noise pollution is one of the ways we often encounter pollution, noise brings physical and psychological harm on the following main aspects: 1. damage hearing. According to Masaaki Testing Center observation: When people hear continuous motorcycle sound, eight hours after the hearing will be damaged; if the rock concert hall, half an hour later, people will listen to damage. 2. The damage a person's cardiovascular system. China survey of urban noise and the health of residents show: Noise area every increase of 1 dB incidence of hypertension increased by 3%. 3. affect the nervous system, people irritable, irritability. 4. The impact of sleep, causing fatigue Dongguan Masaaki testing company has environmental noise pollution detection, noise in public places, workshop noise, life noise, factory noise and other testing qualifications. Hand-held sound level is to be fixed on a tripod when measuring that point to the test source microphone. Microphone 1.2 meters high off the ground, away from the operator about 0.5M, from the walls and other primary reflective surface is not less than 1M. Noise classification: Class I: pure residential area at daytime: 50 db at night: 40 db Class II: plants, mixing daytime living area: 60 db at night: 50 db III class: pure industrial area at daytime: 65 db at night: 55 Follow decibel micro-channel public number: zm_detection@163.com free hotline: 400-6240-060