The no-stop limit is the most important piece of information a dive computer provides. A computer program will take into account depth and air in order to calculate this limit and offer data on when to begin the ascent or decompression stop. This data is also known "no time left"
Different preferences
Although there are many differences in the functions of different dive computers, they all perform the same basic functions such as tracking nitrogen loading and ascent rate and displaying the depth. Divers can choose to use one type or another of the dive computers because it has different NDL times. A diver may have different settings than the one recommended. 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 helps you to stay underwater safe. It will run calculations using your information and then compare that information with the relevant dive tables to determine how long you have at deep. You don't have to be a math genius to understand the calculations, but you should have a good idea of where your dive computer falls on a liberal-conservative spectrum. A liberal-leaning dive computer is the best option if you want maximum bottom time and safety.
Display
Display screens on dive computers can be wrist-mounted, submersible pressure gauge mounted or both. They provide the information necessary to avoid decompression as well as ensure safe diving. Divers may also find useful extra features in some dive computers, such as the compass direction or water temperature. Dive computers can even be used to save data to a personal computer. This may prove useful for accident investigators. A dive computer is able to perform many functions, including helping to determine the cause of an incident.
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
You must choose the correct diving computer to suit your needs. This will help you avoid any potential accidents. These devices use algorithms in order to determine how long a diver will be able stay underwater. While the algorithms for most dive computers are very generic, divers will have their own unique body composition or fitness levels. Some machines will recommend a greater number of stops than others. Some will recommend more stop options than others. Whatever dive computer choice you make, it will let you stay under water longer and decrease the likelihood of suffering from decompression sickness.