- RMS – use it to indicate trends in friction levels (lubrication, stage 1&2 bearing failure)
- Max RMS – use it to indicate ultrasound signal stability (steam traps, chain drives, flexible couplings, linear bearings)
- PEAK – use it to indicate impacting (shift from stage 2 to stage 3 bearing failure, fatigue, gear mesh, broken gear teeth)
- Crest Factor – use it to correlate the relationship between friction and impacting on any asset (perfect for VFDs!!)
- Gas & Valve Leak – RMS
- Lubrication – RMS
- Steam Trap – RMS & Max RMS (+Peak for flash steam)
Impacting:
- Bearing, Gears – Peak & RMS (+Crest Factor)
Cavitation:
- Cavitation – Peak
Check out our SDT 200, 270, and 340 featuring the four condition indicators to detect, trend and analyze ultrasound and vibration.
Filed under:
Maintenance Tips, Ultrasound by Allan Rienstra - SDT Ultrasound Solutions