Customer requirement :
The noise level of the equipment shall be in line with "noise" Hygienic standard of industrial enterprises, the continuous noise level test allows to protect hearing and health, namely the distance of 1 meters, the ground equipment shell (or the installation of platform 1.5 meters high) noise on the measured (sound pressure level) should not exceed 80dB (A). TA noise curve in technology file provides pressure machine and other equipment in the flow range. If not satisfied, should take measures to eliminate the noise.