ISO 10816 Vibration Severity Zone
Classify a measured RMS vibration velocity against ISO 10816-3 zones A/B/C/D for machinery condition.
Severity zone
C - unsatisfactory (short-term)
Formula, assumptions, and limits
ISO 10816-3 tables. Zone A = just commissioned; B = acceptable long-term; C = short-term only / plan maintenance; D = shutdown risk. Applies to 10–1000 Hz RMS velocity on machine casing / pedestal.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Broadband RMS velocity | mm/s | vibration monitor | |
| Machine size per ISO 10816-3 | I–IV | designer |