Alerts are one of the most widely used features of Critical Labs. They are a simple, yet powerful way to stay on top of managing your critical infrastructure.
Critical Labs Alerts are View-based, which means Alerts are triggered by the sensors and widgets that are in your Company's views. If you want a specific sensor to have the capability to send an alert, it is required to appear in at least one view. This is why we recommend having at least one view per piece of equipment.
Configuring Sensor Thresholds
Another key to properly configuring alerts is ensuring that each sensor has proper thresholds in place. A threshold is the point at which an alert is triggered. Critical labs has three threshold settings: OK, Warning, and Critical. Alerts are sent whenever a sensor crosses the Warning or Critical threshold. To modify a sensor's thresholds, navigate to the equipment from the Gateway page and click on the sensor. You can also access the sensor from within a View. Click on the icon with the 3 vertical dots on the right side of the widget, then select View Sensors.
Once you are on the Sensor page, click the edit button in the upper right hand corner.
Here we can see that no thresholds have been set. A sensor will not be able to send an alert without any thresholds.
The yellow triangle icon signifies a Warning threshold. This value indicates that something is wrong, but hasn't completely failed yet. The red circle icon signifies a Critical threshold, use this value to indicate a severe problem. The arrow icon at the bottom signifies the max threshold. This indicates what should be the maximum or minimum value possible and is used primarily to set the baseline for dashboard widgets. Critical Labs will calculate a default value for you, or you can replace it with your own if necessary.
After populating the sensor thresholds, the deadband diagram will appear below.
Deadband is an advanced feature that prevents alerts from triggering repetitively. For example, consider a temperature sensor with a Warning threshold set to 75º. It's not unusual for temperature sensor readings to fluctuate between 74º and 75º every few minutes. Without a deadband, you would receive an alert every time the sensor hits 75º.
Critical Labs employs a deadband that requires the sensor value to fluctuate a certain percentage (default 4%) before resetting and triggering another alert. You can use the chart displayed on the Edit Sensor page to visually see how modifying the deadband percentage affects when an alarm will be reset. You can see in the chart below that with deadband enabled, the temperature value would have to reach 72º before the alarm gets reset.
Once you have completed configuring the sensor thresholds and the deadband, click Finish.
Managing My Alerts
To manage the alerts that you receive open the Navigation Menu and select My Alerts. This page will display a table showing all of the Views you have access to, along with the types of alerts you are set up to receive from each view. To add or remove an alert for a given View, select/deselect the checkbox. Once you have completed adjusting your alerts, click Finish.
Managing Alerts for Multiple Users
There are two ways to manage alerts for multiple users. You can manage alerts for all users for a single view by clicking the alerts icon from the toolbar within a View.
Select/Deselect the desired alert options for each user, then click Finish.
You can also manage alerts for a single user for all views at once from the Users page. Open the Navigation Menu and select Users. From the Users page, open the View dialog for a user by clicking the icon below the View header, then select the Alerts tab at the top of the dialog.
Select/Deselect the desired alert options and click Save.
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