The no-stop limit is the most important piece of information a dive computer provides. A computer program will consider depth and air to determine the limit. The program also provides data on when to ascend or stop. This information is also called the "no stop remaining" data.
Preferences of divers
There are many differences among different dive computers. However, all of them perform the same basic functions like displaying depth and tracking nitrogen loading. Divers may choose one type of diving computer over another due to the fact that it offers different NDL times. The settings that are recommended for one computer might not be appropriate for another. Therefore, it is important to plan a dive before purchasing a dive computer. Also, compare various models before deciding which one is best for you.
Functions
A dive computer is designed for safety underwater. It performs calculations based upon your information. Then, it compares this information with the appropriate dive tables to determine your depth time. While you don't necessarily need to know the formulas, you should be able to identify where your dive computer is on the liberal-conservative spectrum. A liberal-leaning dive computer is the best option if you want maximum bottom time and safety.
Display
The dive computer's display screen, whether mounted on a wrist-mounted pressure gauge or mounted on a submersible water gauge, provides data that can help to avoid decompression. Divers may find it useful to have additional features such as water temperature and compass direction. Many dive computers allow users to download their data onto a personal computer. This can be useful for accident investigators. With these features, a dive computer can prove invaluable for a number of purposes, including determining the cause of an accident.
Safety limits
Diver computers can use many algorithms to calculate the decompression time. The acceptable DCS numbers range from 2 to 5 percent. However, individual susceptibility and accidents can affect the figures. The US Navy and commercial diving communities often aim for a 0.1 percent mild to 0.025% serious DCS. A dive computer should always be able to run the decompression algorithms correctly to ensure maximum safety. But diving with a computer can be more complicated than it looks.
Cost
Choosing the correct dive computer for your needs is essential to prevent any accidents while diving. These devices use algorithms which determine how long a diver is able to stay underwater. Although most computers use the same algorithms, each diver's body composition and fitness levels will be different. Some computers will recommend more stops than others. Others will recommend a greater number of no-flys. Whichever dive computer you choose, it will help you stay underwater longer and reduce the risk of decompression sickness.