So-called multi-level dives can be pre-planned with traditional dive tables or personal computer and smartphone apps, or on the fly using waterproof dive tables, but the additional calculations become complex and the plan may be cumbersome to follow, and the risk of errors rises with profile complexity.
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For example, a recreational diver who plans to stay within "no-decompression" limits can in many cases simply ascend a few feet each minute, while continuing the dive, and still remain within reasonably safe limits, rather than adhering to a pre-planned bottom time and ascending directly. īecause of the computer's ability to continually re-calculate based on changing data, the diver benefits by being able to remain underwater for longer periods at acceptable risk. This recorded information can be used for the diver's personal log of their activities or as important information in medical review or legal cases following diving accidents. Many dive computers also provide additional information to the diver including air and water temperature, data used to help prevent oxygen toxicity, a computer-readable dive log, and the pressure of the remaining breathing gas in the diving cylinder. As the dive computer automatically measures depth and time, it is able to warn of excessive ascent rates and missed decompression stops and the diver has less reason to carry a separate dive watch and depth gauge. Dive computers address the same problem as decompression tables, but are able to perform a continuous calculation of the partial pressure of inert gases in the body based on the actual depth and time profile of the diver. The primary purpose of a decompression computer is to facilitate safe decompression by an underwater diver breathing a suitable gas at ambient pressure, by providing information based on the recent pressure exposure history of the diver that allows an ascent with acceptably low risk of developing decompression sickness. IDive DAN personal dive computer display showing decompression requirement and other data during a dive The central band shows time to surface from current depth, stop depth and stop time. 11 Operational considerations for use in commercial diving operations.10 Manufacturing and performance standards.8.2 Comparative assessment and validation.8.1 Performance of dive computers exposed to profiles with known human subject results.6.4 Management and mitigation strategies.
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#Idive saint augustine professional
Use by professional scuba divers is also common, but use by surface-supplied divers is less widespread, as the diver's depth is monitored at the surface by pneumofathometer and decompression is controlled by the diving supervisor. A dive computer is perceived by recreational scuba divers and service providers to be one of the most important items of safety equipment. Data recorded by a dive computer may be of great value to the investigators in a diving accident, and may allow the cause of an accident to be discovered.ĭive computers may be wrist-mounted or fitted to a console with the submersible pressure gauge.
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#Idive saint augustine download
Several additional functions and displays may be available for interest and convenience, such as water temperature and compass direction, and it may be possible to download the data from the dives to a personal computer via cable or wireless connection. The display provides data to allow the diver to avoid decompression, or to decompress relatively safely, and includes depth and duration of the dive. Audible alarms may be available to warn the diver when exceeding the no-stop limit, the maximum operating depth for the gas mixture, the recommended ascent rate or other limit beyond which risk increases significantly. Some dive computers allow for gas switching during the dive. Several algorithms have been used, and various personal conservatism factors may be available. Most dive computers use real-time ambient pressure input to a decompression algorithm to indicate the remaining time to the no-stop limit, and after that has passed, the minimum decompression required to surface with an acceptable risk of decompression sickness.
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Suunto Mosquito with aftermarket strap and iDive DAN recreational dive computersĭive profile recording and real-time decompression informationĪ dive computer, personal decompression computer or decompression meter is a device used by an underwater diver to measure the elapsed time and depth during a dive and use this data to calculate and display an ascent profile which according to the programmed decompression algorithm, will give a low risk of decompression sickness. Hydrospace Explorer Trimix and rebreather dive computer.