Description: probability for an item to be in a state to perform as required at a given instant; Name: immediate Availability
Description: Probability that an item is in a state to perform as required at a given instant, under given conditions, assuming that the necessary external resources are provided ; Name: Instantaneous availability
Description: A category represents the classification within a device cluster with regard to the required degree of safety; Name: Explosion protection-category for devices of the complete device