#WishIknew – What is PeakVue?
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I wish I knew what PeakVue is!
Emerson Automation Solutions created PeakVue to catch high-frequency events that may hint at developing faults, especially in roller bearings. It ignores normal vibrations to find the impacts that occur with bearing or gear defects.
This technology passes a signal through a filter and samples with the peak detector. So you’ll need to know these terms and parameters to use PeakVue data:
- Filter: The high-pass filter should be greater than or equal to the maximum frequency. It defaults to one kilohertz (kHz) for speeds greater than 600 revolutions per minute (rpm) and 0.5 kHz for less than 600 rpm.
- Maximum frequency: The highest frequency of the peak that occurs during the fault.
- Averages: The total number of peak averages, which shows the average fault frequency and should point to the fault itself.
- Lines of resolution: The ratio between the max frequency of the fault to the bandwidth of frequency bins. So a large bin will represent all the energy in a range of frequencies, and the graph will lack detail. And narrow bins mean that a single amplitude will more closely depict that frequency range’s energy and give better detail.
PeakVue has found defects where normal spectral analysis has failed – large gear boxes, slow machinery, and such. It provides data trends by fault type and machinery speed too. This helps a lot in vibration and structural monitoring for rotary devices.