How do SEE readings correlate with normal vibration measurements and acceleration envelope measurements?
Normal vibration measurements allow you to isolate low-frequency vibration signals for predicting machine problems in the 1X to 10X range. In the early stages of bearing and gear problems, enveloping and SEE Technology will provide indications of some defective performance. In the more advanced stages of bearing and gear degradation, normal spectrum analysis might reveal some insight as to the extent of damage. SEE measurements do not necessarily correspond with low-frequency measurements or with envelope measurements. In many cases, loss of lubrication, for example, cannot be seen by enveloping or low-frequency measurements. SEE Spectrum analysis can often confirm bearing or gearing defects by their defect frequencies. Because these measurements have different goals, they measure different things. You should use all these technologies in your predictive maintenance program to maximize your ability to predict problems and to maximise your cost savings.
