Why do you have two regulators while scuba diving?
In other words, if the air in the tank is at 3000 psi or 200 bars of pressure, the first stage reduces this pressure to an intermediate pressure of between 6 and 10 bars (87-145 psi), and the second stage further reduces the pressure to make it breathable. This way, we can breathe underwater safely! First stage – Attaches to the scuba tank valve, reduces tank air pressure to an intermediate pressure and routes it to several hoses. Second stage – Mouthpiece you breathe from. Also called a demand valve because it gives you air when you demand it (inhale) at the exact pressure you need for breathing comfortably.
What does octopus mean in diving?
A scuba diving octopus is an additional second-stage regulator connected to the diver’s primary air supply, usually via a longer hose. It works the same way as the primary regulator but is intended for use in emergencies. Longer Hose: Typically, the hose of an octopus is longer than that of the primary regulator, allowing two divers to swim side by side with one using the octopus. Similar Functionality: It works just like the main regulator, providing air on demand.Octopus or Alternate Air Source An octopus is an essential backup that functions similarly to the primary regulator. It allows divers to breathe compressed air when primary air source malfunctions or for sharing with a buddy in emergency situations.An Octopus is a modified version of a standard second-stage regulator that is equipped with a longer hose to facilitate easier air sharing with a dive buddy in an out-of-air situation. It also features high-visibility yellow panels for better visibility underwater.
What is a scuba regulator used for?
Simply put, a scuba regulator is the device that delivers air to the diver and lets the diver breathe underwater. All regulators sold in professional dive centers today are reliable, and many have fantastic added features that make diving easier and more fun. Xstream. The regulator of choice for the most formidable of divers. The Xstream works with air, nitrox, trimix or 100% oxygen. Certified for use down to 200 m / 656 ft, this regulator never quits, giving it the honored place as the US Navy’s, US Coastguard’s and the NYPD’s preferred regulator.
What is the 120 rule in scuba diving?
Subtract the depth you’re diving (in feet) from 120. The resulting number is the maximum amount of minutes you should spend at that depth. The simple answer: “about an hour”. But it’s more complex than that: how much air a diver consumes obviously depends on their level of physical exertion.Total time = Tank capacity / Air per minute. Using an 80 cubic foot tank at 3,000 psi: A diver with a SAC rate of 0. With an 80 cubic foot tank, they’d have about 53 minutes of dive time (80 / 1.The Rules of Scuba Diving: Never Hold Your Breath. Plan Your Dive. Dive Within Your Limits.The rule advises that the dive depth (in feet) in addition to the time a diver spends underwater (in minutes) should add up to no more than 120. The purpose of this rule is to help scuba divers to avoid serious dangers such as nitrogen narcosis as well as decompression sickness by keeping them within a safe range.
What are the two golden rules when scuba diving?
If you had but 30 seconds to teach someone to scuba dive, what would you tell them? The same thing Mike did — the Golden Rule of scuba diving. Breathe normally; never hold your breath. The rest, in most cases, is pretty much secondary. Because excess nitrogen remains dissolved in the body tissues for at least 12 hours after each dive, repeated dives within 1 day are more likely to cause decompression sickness than a single dive.Oxygen Toxicity During Diving If a person breathes 100% oxygen, this partial pressure would be reached at a depth of 13 feet (4 meters). Because air consists of only 21% oxygen, to reach that toxic partial pressure breathing air would require a dive to slightly over 187 feet (57 meters) in depth.Some recreational divers have descended to depths of 1,000 feet and beyond and survived the experience without any problems. However, the biggest concern is getting crushed from the increasing weight of the water. The water pressure can suffocate you to death if you don’t take precautions.The need to do decompression stops increases with depth. A diver at 6 metres (20 ft) may be able to dive for many hours without needing to do decompression stops. At depths greater than 40 metres (131 ft), a diver may have only a few minutes at the deepest part of the dive before decompression stops are needed.Divers can only spend around 12 minutes under water at a time to help avoid decompression sickness.