84% of degradation to bearings occurs once installed. Monitoring can detect abnormalities caused by
these and allow preparations for maintenance or replacement, ultimately avoiding failure and saving
money. A failure of a bearing is not just the part itself, but for example in the marine industry, the cost
to a vessel owner is repair, fitting and downtime in dock and loss of earning whilst not operational.
Without systematic procedures and planned maintenance (enabled by condition monitoring) then cost
can be very damaging to a business.
over time (whilst running at comparative speeds) as the noise increases, it indicates an increase in degradation of the bearing. This is used for continuous long-term monitoring, i.e. checking
the bearing as part of scheduled maintenance, recording he readings each time and watching
for a spike in readings
declining in condition
propagates as a stress wave is detectable by the Portamonitor®.
4. Competitive Advantages of the Portamonitor®
Appropriate monitoring matters because false diagnosis can result in undue downtime, wasted time,
money and resources.
4.1. When to use?
Portamonitor® can be used for pre-service (proof) testing as well as in-service (re-qualification) testing
and condition monitoring.
4.2. Benefits of distress® readings
Distress® provides an instant indication of the health of the bearings. It measures the transient activity,
such as impacts, friction and surface deformation caused by micro-pitting and fractures. Algorithms
inside the Portamonitor® sort this data for comparison against acceptable limits categorised by a
The display on the Portamonitor® will show a numeric value indicating the level of distress, for instance:
5-10 indicates the system in “OK”. Between the value of 10-15 indicates the system is “SUSPECT”, and
requires further monitoring, whereas >15 indicates a “POOR” system and requires attention.
4.4. Low Cost & Money Saving
The Portamonitor® is low cost and is very easy to use and train crew and easy to integrate into
scheduled maintenance. Using this regularly extends the lifetime of key pumps, bearings and gearboxes
saving significant amounts of money over the lifetime of the vessel, extending the time between
machinery replacement and ensuring failures do not occur at critical times