Continuous Monitoring for Critical Assets: When Machine Sentry Online Fits

Not every machine needs continuous monitoring. For the assets that carry the greatest operational risk, however, waiting for the next manual inspection or periodic reading may leave too much time between changes in condition and engineering review.

Continuous monitoring for critical assets provides a different level of visibility. Permanently installed sensors can collect condition data without relying on an engineer being present at the machine, while remote access allows developing changes to be reviewed as part of an ongoing reliability programme. Machine Sentry Online is designed for applications where asset criticality, access, operating pattern or failure consequence justify that closer level of monitoring.

When does continuous monitoring make sense?

The right monitoring strategy depends on the asset and the consequence of failure. Some equipment can be managed effectively through route-based vibration measurements or fixed wireless sensors collecting data at planned intervals. Other assets need greater visibility because an unexpected failure could interrupt production, create a significant maintenance burden or affect a wider process.

Continuous monitoring may be appropriate where:

• The asset is critical to site operation
• Failure develops quickly or unpredictably
• Access is difficult, restricted or costly
• The machine operates continuously or for long duty cycles
• Condition needs to be reviewed remotely
• Several parameters are needed to understand asset behaviour
• The cost or consequence of unplanned failure is high

The objective is not to collect the maximum amount of data from every machine. It is to apply the level of monitoring that matches the risk.

What Machine Sentry Online monitors

Machine Sentry Online uses permanently installed, hardwired sensors connected to an online monitoring system. Depending on the application, the system can monitor parameters including vibration, temperature, ultrasound and pressure, alongside other relevant condition information. This gives reliability teams the opportunity to look beyond a single measurement and understand how different aspects of machine behaviour change together. For example, a rise in vibration may become more meaningful when considered alongside temperature or process information. Combining parameters can provide useful context when engineers are deciding whether a change represents normal operating variation or a developing condition concern.

Why hardwired monitoring can be useful

Wireless and route-based monitoring both have important roles within a condition monitoring programme, but there are applications where a hardwired online system is the better fit. A permanent connection can support frequent data acquisition from assets that need closer surveillance and removes the requirement for routine manual collection simply to obtain the measurement. This can be particularly valuable for critical equipment located in difficult-to-access areas or for machinery where changes need to be reviewed between normal inspection intervals. The monitoring method should follow the application. A site may therefore use route-based monitoring, fixed wireless sensors and online systems together, with each method applied according to asset criticality and practical need.

Remote visibility without routine site attendance

Condition data from Machine Sentry Online can be made available through the Machine Sentry web-based software environment, allowing authorised users to review information remotely. That creates a clearer route between the asset and the people responsible for interpreting its condition.

For organisations operating multiple sites, remote locations or assets that are difficult to inspect routinely, this can reduce dependence on physical attendance for basic data collection while maintaining visibility of developing trends. Remote access does not remove the need for engineering judgement. Its value is in making useful condition information available sooner and more consistently so that engineers can decide when further investigation or site intervention is required.

From monitoring to engineering action

More data only creates value when it leads to better decisions. A useful continuous monitoring workflow is therefore:

measure → trend → identify change → analyse → act → verify

Machine Sentry Online provides the measurement and visibility layer, but the wider reliability process still depends on appropriate alarm settings, engineering analysis and a defined response when condition changes are identified.

Where specialist review is required, AVT Reliability’s Remote Diagnostics Centre can support ongoing analysis of condition data and help identify changes that warrant maintenance attention or further engineering investigation. This creates a practical link between remote monitoring and maintenance planning rather than leaving the data as a standalone stream of measurements.

Building a tiered monitoring strategy

Continuous monitoring is most effective when it forms part of a wider asset strategy rather than being applied indiscriminately.

A tiered approach may include:

• Route-based monitoring for lower-risk assets that can be inspected periodically
• Fixed wireless monitoring where automated regular measurements improve visibility
• Continuous online monitoring for critical assets requiring closer surveillance

This allows monitoring investment to follow risk and criticality. It also gives organisations a scalable route to expand condition monitoring over time. Assets can move between monitoring levels as operating requirements, failure history or business priorities change.

Continuous monitoring for critical assets in practice

Machine Sentry Online has been applied to critical equipment where permanent monitoring provides a stronger basis for maintenance decisions than periodic collection alone. For example, continuous monitoring of a critical crane winch can provide ongoing visibility of bearings, shafts and gearing in an application where access and failure consequence make closer monitoring valuable. The same principle applies across other industrial equipment. The decision to use online monitoring should be driven by what the asset needs, how quickly its condition can change and what happens if a developing problem is missed.

Choosing the right level of monitoring

Continuous monitoring for critical assets is not about replacing every other condition monitoring method. It is about recognising where closer, remote visibility provides enough reliability value to justify a permanent online system.

Machine Sentry Online combines hardwired condition monitoring with web-based access to help organisations maintain visibility of critical equipment, while AVT Reliability can support the wider process of asset selection, system design, analysis and engineering response.

For assets where failure risk, access or process importance demands more than periodic measurement, continuous monitoring can provide the additional visibility needed to support earlier and better-informed maintenance decisions.