After long discussions, both plants decided to switch from the VCM system to the newer Intellinova system - and with fabulous results, which are highlighted in chapter...
Once upon a time, there was a ship called the Hydra. They were suspicious that the gears or bearings in the main gearbox were failing and asked a vibration analyst to perform a test. The analyst turned to me for help...
The application in this case is a drying drum. The drums are heated inside and their purpose is to mix ingredients together to make grains, and to cool or dry existing grains.
Spectrum analysis provides a great deal of information about the health of rotating machinery. But you should consider the spectrum as a summary of the vibration within the machine...