VIBTOOL 02.2009
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Cavitation evaluation
Cavitation measurements on pumps can only be evaluated
using trending analysis or by comparison. When measure-
ments have been taken over a longer period of time, for
example during trending, deviations from previous mea-
surements can indicate that cavitation is occurring in the
pump.
Comparison between one machine and another of the same
type can also give some indication of cavitation: when the
cavitation measurement on one pump is higher than that of
the second pump, then cavitation is likely to be the cause.
Ideal measurement position
When taking cavitation measurements using VIBTOOL,
care must be taken to position it correctly. If VIBTOOL is
held improperly against the machine, unreliable measure-
ment values and damage can occur. Ensure that the
measurement location is metallic, flat and clean, or if
possible, use the VIB 8.610 countersink to prepare the
location (see page 56 for details) .
Cavitation measurement
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