Dr. Lewis wrote the proprietary Pelagic Z+ (PZ+) algorithm employed in Aqua Lung’s computers. The PZ+ algorithm is based on the Bühlmann ZHL-16C algorithm and is a favored recreational algorithm for the safety conscious diver.
Thereof, What algorithm does Shearwater Perdix use?
Shearwater Research has implemented VPM-B according to the original Erik Baker Fortran specification. VPM-B allows a conservatism factor to be adjusted over a range of 0 (least conservative) to +5 (most conservative), the default is +3.
Accordingly, What is gradient factor?
Gradient factors are mechanisms which modify the decompression stops prescribed by the Buhlmann ZH-L16 decompression algorithm. … When such maximum permissible inert gas partial pressures are specified for decompression stop depths, they are referred to as M-values.
What is conservative factor dive computer? Generally speaking, conservative means safer. In practice it means that a dive at a given depth is shorter due to the decompression obligation (the no decompression time is short). Conservative also means that the time the diver needs to spend on decompression is longer.
Also know Is Shearwater the best dive computer?
Shearwater Research Perdix is perhaps the most basic dive computer that has made it to our list, but it’s a great choice for those who need a reliable device at a wallet-friendly price.
Does the Shearwater Peregrine have a compass? The Peregrine is a simpler dive computer focused on single gas air and nitrox diving, and light 3-gas nitrox technical diving. The Perdix is a more advanced computer for all types of diving including Trimix and CCR with additional features such as a digital compass and air integration.
What is an AI dive computer?
Best Air Integrated Dive Computer for 2021. … An air integrated dive computer tells the diver how much air/nitrox is left in their tank. This can either be done with a wireless plug-in transmitter or with a hose attachment (known as a console computer).
How deep can you dive without decompression?
There’s a bit of physics and physiology involved in a full explanation, but the short answer is: 40 metres/130 feet is the deepest you can dive without having to perform decompression stops on your way back to the surface.
What is decompression ceiling?
Details. Given the current state of a diver’s tissues, this command calculates the diver’s decompression ceiling: the shallowest depth (or lowest ambient pressure) to which it is safe to ascend. The argument state gives the diver’s current state or the diver’s progressive state during a dive.
What does GF mean in scuba?
Low Gradient Factor defines the first decompression stop, while High Gradient Factor defines the surfacing value. Using this method, the GF actually changes throughout the ascent.
What does gradient mean in scuba diving?
The Gradient Factor defines the amount of inert gas supersaturation in leading tissue compartment. Thus, GF 0% means that there is no supersaturation occurring and inert gas partial pressure equals ambient pressure in leading compartment (Note: The leading TC is not necessarily the fastest TC!).
How do gradient factors work?
Gradient factors adjust the limits displayed on the computer screen. Low GFlow values (e.g., ≤20) are for those who believe in deep stops. Higher GFlow values (e.g., ≥30) get divers off the bottom to reduce inert gas uptake in tissues that are not saturated.
How do I turn on Shearwater Perdix?
To turn the Perdix on, press both the MENU (left) and the SELECT (right) buttons at the same time . This feature is supplied as a backup for when you forget to turn on your Perdix. Shearwater recommends turning on manually before each dive to confirm proper operation and to double check battery status and setup.
Do dive computers have a compass?
Navigation. A key element to any scuba diver’s gear is his/her compass available either in an Integrated Digital Compass on your dive computer or as an analog compass on your scuba dive gauge. It lets you know where you’re heading and how to get back to your boat or shore.
Is air integrated dive computer worth it?
Air integrated dive computers, such as the Suunto Cobra, monitor your air pressure and can display your airtime remaining for your dive based upon your air consumption and depth. In our opinion, it is worth the extra investment!
Can you fart while diving?
Farting is possible while scuba diving but not advisable because: Diving wetsuits are very expensive and the explosive force of an underwater fart will rip a hole in your wetsuit. An underwater fart will shoot you up to the surface like a missile which can cause decompression sickness.
What is no stop time in diving?
The “no-decompression limit” (NDL) or “no-stop limit” , is the time interval that a diver may theoretically spend at a given depth without having to perform any decompression stops while surfacing.
How deep can humans dive before being crushed by pressure?
Human bone crushes at about 11159 kg per square inch. This means we’d have to dive to about 35.5 km depth before bone crushes. This is three times as deep as the deepest point in our ocean.
What is the no decompression limit for 62 feet?
The NDL or No-Stop time for 60 feet / 18 meters is 56 minutes according to the Recreational Dive Planner table. On a Suunto dive computer using their algorithm, the NDL is 51 minutes for your first dive.
At what depth do you decompress?
The deeper and longer your dive the more chance you need decompression stops. Shallow dives of 6-10 metres (20-30 feet) you can spend over 200 minutes without a decompression stop. Dives to over 30 metres (100 feet) limit your dive time to around 20 minutes before a decompression stop is required.
What is residual nitrogen?
Simply defined, residual nitrogen time is a theoretical mathematical representation of the nitrogen amount your body tissues absorb after your scuba dive. The residual nitrogen time is expressed in minutes (more on this later) on diving tables. … Time limits, referred to as no-decompression limits (NDLs), exist.
Is it OK to share a computer with your dive buddy?
It is OK to share a computer with your dive buddy. You should perform a safety stop at 5 meter for 3 to 5 minutes on every dive.
What is the most serious lung overexpansion injury?
Lung Overexpansion Injuries
Lung expansion injuries can result in four distinct injuries independently or together. Air embolism is the most serious of these injuries and occurs when expanding air forces through the walls of the lungs into the circulatory system.
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