User's Manual

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Users Manual
32
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 III
Large Rigid
Foundation
Class IV
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
Trending
Trending, or repeated vibration measurements kept in a
spreadsheet over time, is the best method to track
machine health. See Export Data on page 34 for more
information about the template and measurement plots.
The Excel template also can give an Overall Vibration
Severity that refers to one of three ISO Standards:
• 10816-1
• 10816-3
• 10816-7
A brief description of each standard and terms is as
follows:
ISO 10816-1
This standard contains general guidelines for machine
vibration measurements on non-rotating parts.
Key terms
Class I: Individual parts of engines and machines
integrally connected to the machine in normal
operation. Production electrical motors at a maximum
of 15 kW are examples of machines in this category.
Class II: Medium-sized machines (typically electrical
motors with 15 kW to 75 kW output) without special
foundations, rigidly mounted engines or machines (up
to 300 kW) on special foundations.