How noisy is the vacuum pump when it is working?

OSR’s corporate standard is that the noise level measured at a distance of 1 meter from the front, back, left, and right of the sterilizer should not exceed 75 decibels. To ensure this standard, OSR installed a heat exchanger in front of the vacuum pump to fully cool the steam before entering the vacuum pump. Otherwise, the components of the vacuum pump will expand in a high temperature environment, increase friction, make the equipment produce a lot of noise, reduce the mechanical sealing effect and vacuum efficiency, and pollute the working environment.