What is the purpose of a dive computer when using Nitrox?

The purpose of a dive computer when using Nitrox is to calculate and track nitrogen and oxygen exposure throughout the dive. This is crucial for divers because Nitrox, which is a mixture of nitrogen and oxygen with a higher percentage of oxygen than regular air, alters the way divers plan their dives. The dive computer continuously monitors depth, time, and gas mixtures, allowing divers to avoid nitrogen narcosis and oxygen toxicity by staying within safe limits for both gases.

The dive computer calculates no-decompression limits and tracks the cumulative exposure to nitrogen and oxygen, ensuring that the diver stays within safe operational parameters specific to the Nitrox blend they are using. This real-time data helps divers make informed decisions during their dive, such as when to ascend or if they need to perform a safety stop.

Other options, while related to diving, do not encompass the primary role of a dive computer when utilizing Nitrox. Measuring water temperature, recording depth alone, or providing light does not address the critical need for managing gas exposure, which is essential for maintaining safety on a Nitrox dive.