Acquire Better Asset Health Data With Continuous Monitoring Systems

If the network is temporarily unavailable, the Continuous Monitoring System (Figure 1) stores the waveform dataset locally until network access is restored. Typical plant and factory installations have one InsightCM^TM server per plant with 20 to 250 Continuous Monitoring Systems.

Screen data to reduce the overall data volume and provide a way to isolate important asset events. The following triggers to capture data:

• Time—Data is captured in user-configurable time intervals such as once an hour, once a day, three times a day, and so on. Choose when to capture the features calculated (less data), the full waveform (more data), or both.
• Change in engineering units (delta EU)—Data is captured when a calculated feature changes by the set delta value with respect to the initial measured value. Once the trigger condition is met, the trigger resets from the latest value but retains the same delta limit. This feature is most often used for ramp ups and coast downs during which data recordings at periodic rotational speeds are desired, for example, recording a 4 s waveform every 50 rpm during ramp up.
• Alarm limits—Data is captured when a measured feature crosses a preset limit. You must acknowledge alarms before retriggering.
• Force trigger—You can request a real-time reading using the force trigger option in the action menu for any device. This feature is good for troubleshooting sensor connections, spot checking an asset, or investigating the current state before acknowledging an alarm.

Preset a time to collect data at higher acquisition rates (up to 102.4 kS/s per channel) to analyze assets with slow rotational speed. Continuous Monitoring Systems then revert to the lower set acquisition rate for feature calculation, trigger, and alarm screening.

Create an operating state to set different data and tag-collection properties for specific conditions. For example, you might want to collect data from equipment more frequently when the equipment is under a heavy load than when it is idle. If you define an operating state, the Continuous Monitoring System detects the heavy-load condition and implements a different set of data-collection properties in response. This feature is also used to capture motor-start data sets (Figure 2) that are valuable to condition monitoring professionals but can be difficult to acquire due to remote locations or short-notice starts.