How can divers ensure they are adhering to maximum exposure times?

Divers can ensure they are adhering to maximum exposure times by reviewing dive tables specific to the nitrox mixture used. Dive tables provide critical information regarding the safe limits for diving with different gas mixtures, including nitrox. Each nitrox blend has different maximum operating depths and no-decompression limits, which are essential to preventing decompression sickness. By consulting these tables before and during the dive, divers can plan their dive profiles accurately and adjust their ascent rates and time spent at depths according to the specific limits set for their chosen nitrox blend.

While using a dive computer can assist with real-time monitoring of dive data and provide warnings, it's crucial for divers to have an understanding of the theoretical background, such as diving tables, to make informed decisions and cross-check data for safety. Adjusting depth continuously without knowing the implications of that change on the dive profile might lead to potential risks. Similarly, monitoring heart rate is important for physical well-being but does not directly correlate with safe exposure times related to nitrogen absorption and maximum limits.