CPC G01M 13/005 (2013.01) [F16J 15/3492 (2013.01)] | 20 Claims |
1. A condition monitoring apparatus for a system comprising rotating or reciprocating machinery and a seal, the apparatus comprising:
a first acoustic sensor coupled to the seal for providing a first acoustic emission signal;
a second acoustic sensor coupled to the rotating or reciprocating machinery for providing a second acoustic emission signal; and
a filter module, wherein the filter module is configured to perform active noise cancellation based on a comparison of the first acoustic emission signal and the second acoustic emission signal.
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