Vibration Meter
Interpret Results
35
Table 6. Severity Scale
Scale Action
No repair action is recommended.
No immediate repair action is
required. Increase the frequency
of measurements and monitor the
condition of the machine.
Have a knowledgeable vibration
technician conduct more
advanced tests at the earliest
opportunity. Consider
maintenance action at the next
planned downtime or maintenance
period.
Have a knowledgeable vibration
technician conduct more
advanced tests as soon as
possible. Consider immediate
shutdown of the machine to make
repairs and prevent failure.
ISO 10816 Standards
As an alternative to the Overall Vibration Severity Scale
included in the Meter, you can use the ISO Standard
10816-1 to evaluate the severity of overall vibration levels.
Table 7 is a chart that contains the values from this
standard. You can compare the overall vibration value
measured with the Meter to this table to identify the
vibration severity.
Table 7. Vibration Severity - ISO 10816-1
Machine Class I
Small
Machines
Class II
Medium
Machines
Class II
Large Rigid
Foundation
Class III
Large Soft
Foundation
Vibration Velocity Vrms
in/s mm/s
0.01 0.28
0.02 0.45
0.03 0.71 GOOD
0.04 1.12
0.07 1.80
0.11 2.80 SATISFACTORY
0.18 4.50
0.28 7.10 UNSATISFACTORY
0.44 11.20
0.70 18.00
1.10 28.00 UNACCEPTABLE
1.77 45.9
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