Device for damping sounds which comprises a casing around one or more sound-generating equipment items, and a sound-damping panel via which air flows out from the casing. High velocity air or other inert gas is injected into the water and pellet slurry line to the dryer near the pelletizer exit. The cover has at least one side plate, a first and second elastic blades are disposed on the side plate. However, the sending processor does receive the acknowledgement before the end of the resend time period, then the sending processor does not resend the data to the other processor. The transmission data is sent based on at least one of the transmission path identifiers. The moisture content in the nitrogen supply is usually in the range of a few ppm at the gas source and can increase dramatically at the measuring site depending on the length of the nitrogen pipe net and due to porosity of the pipe walls, leakage of seals and residual moisture trapped in so-called dead legs.