Scalar Value Dashboard Element:
The wireless sensors will collect scalar data on an hourly basis starting from when the sensor is powered on. This hourly default setting does not have a user interface to adjust, merely establishes the hourly interval based on when the sensor is powered on. The dashboard has a metric for scalar ALARMS that indicate if a temperature or velocity RMS has exceeded a warning or critical threshold value.
Scalar Value Data / Scalar Value Alarms:
By clicking on the dashboard element, the Scalar Values inner page will open. This will show the trendlines for the various data types. The interface is designed to allow a user to select 3 of the 9 data types to be on display. You can also set the ALARM Control Limit (CL) for warning a critical values for each sensor. The setting of these levels can be configured manually or use a learning mode.
Scalar Value Alerts
Scalar Value ALERTS are independent of the ALARMS. Alarms + Criteria = Alerts. Users can configure Alerts to be either Aggressive or Relaxed. Aggressive alerting means that any time an Alarm threshold is exceeded, an alert will be created. Relaxed alerting (in development) means that an alert will only be created after a number of threshold exceedances in a 12-hour period. The purpose of this setting is to allow some degree of persistence to occur prior to getting user’s attention, thus preventing alarms when an asset goes through start ups, etc.
Notifications adds additional control over when users become aware to asset conditions. Alerts + Criteria = Notifications. Each user may have different interests and different requirements for when they needs to be informed of asset conditions. For example, a plant executive may only want to be notified if an asset has a critical alert or extreme fault, whereas a reliability engineer or analyst may want to set a notification setting when any alert level is generated.
Is-running Data Collection Triggers
Related to Scalar Values, the system does support using the Acceleration RMS as an indicator of the machine running to initiate the Daily Diagnostic Data Capture. The default setting is 0.1g, but is user configurable. Use the trendline view and select the Arms data type to determine the correct value for this trigger. When the Data Collection Trigger is enabled, the system will check running condition starting at the time as defined for Collection Time of Day. If any sensor with the Arms threshold value has been exceeded, the diagnostic data will be captured. If the threshold has not been exceeded, the scalar data is collected, but the system will wait for the next scalar collection (following hour) to revalidate machine is-running. If 24 hour pass, the system will log the asset was not running and restart the process.
Asset Dashboard Metrics - Diagnostic Data
The daily diagnostic data delivers tri-axial vibration spectra and in-line axis impact demod waveform to the ExpertALERT application. ExpertALERT is used to determine the condition of the machine, this includes the use of the MID templates and baseline criteria for automated analysis. An analyst is required to setup or validate any automated setups for use for the automated diagnostics.
Only FINAL REVIEW Diagnostic Results will appear on the PredictivePortal. This is an important distinction and is there to prevent automated diagnostics from driving an asset repair without validation. ExpertALERT does have features to allow users to automate expert system results to be presented on the PredictivePortal, but this should only be accomplished once an analyst has completed the MID and baseline criteria setup process.
Health Score, Data Collection and Analysis, Latest Alerts, and Asset Severity Trend are all dashboard elements that are derived from FINAL REVIEW Diagnostic Results. If these elements display “No Data Yet”, the solution is to open ExpertALERT and check the box next to Final Review to approve the repair recommendation. This can be accomplished for multiple assets and test dates by using the “Quick Review of Expert System Results” from the Expert menu options.