Which of the following is NOT considered a type of event detector?

The correct choice indicates that "Condition" is not considered a type of event detector within the AVEVA Historian framework. Event detectors are mechanisms used to trigger responses based on specific criteria or situations.

In the context of event detection, Time-Based detectors activate based on scheduled times or intervals, allowing for periodic checks or actions to be performed at set time frames. Value-Based detectors respond to changes in data values, such as when a measurement exceeds a defined threshold. Action-Based detectors are designed to respond to specific actions or events, such as user interactions or external system triggers.

The term "Condition" typically refers to a state or an expression that is evaluated but does not stand on its own as a type of detector. Instead, conditions are often utilized within the context of other types of detectors (like Value-Based) to assess whether certain criteria are met. Therefore, classifying "Condition" separately as a type of event detector is not accurate in this context, thus making it the correct choice for your inquiry.