A booklet on How To Analyze Variable-Speed Machines and include them in a Predictive Maintenance Program (23 page booklet)
Highlights:
This paper introduces the great importance of "order tracking" and how critical it is needed in order to successfully analyze variable-speed machines.
Such order tracking is of great importance, whether the machines simply change in speed from one survey to the next; or worse, if the machines literally change in speed while the measurements are being taken.
This paper uses real-world case histories to illustrate how order tracking can be used to significantly reduce the complexity of analyzing such variable-speed machines.
It also points out what measurements must be taken if such machinery operates over a wide range of speeds (and therefore, likely passes through one or more resonant amplification ranges).
The paper likewise covers how to set up proper spectral band alarms and frequency spans on such variable speed machinery.
