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Vibration measurement
Data for ISO 10816 part 2
‘Part’ refers to a sub division of the ISO standard. So
far, parts 2 to 6 have been published.
Marking a part number displays the definition of the
machine type treated in the part.
In case the machine you want to monitor is a ‘large
land-based steam turbine generator set in excess of
50 MW’, part 2 is your obvious choice.
This machine class has no sub group. Instead, the
choice of limit value table depends on machine speed,
either ‘1500/1800 r/min’ or ‘3000/3600 r/min’.
Marking the appropriate speed range leads to the
final window which shows the ISO recommended
frequency range (10 to 500 Hz), the recommended
measurement quantity (vibration velocity = VEL) and
the limit values or ‘zone boundaries’.
Vibration zones A and B are acceptable, so any meas-
urement result below the B/C boundary of 5.30 mm/s
RMS will be marked green. Results from 5.30 mm/s
to below 8,50 mm/s will be yellow and 8.50 mm/s and
higher will be red.