What is the max depth for a rebreather?

What is the max depth for a rebreather?

The PADI Rebreather Diver course introduces you to rebreather diving to a maximum depth of 18 metres/60 feet and lets you experience things you never imagined possible as a scuba diver. To enroll in the PADI Rebreather Diver course, you must: Be a PADI Open Water Diver. Be a PADI Enriched Air Diver.

What is the scrubber in rebreather?

Introduction. Diving rebreathers use “scrubber” canisters containing soda lime to remove carbon dioxide (CO2) from the expired gas. Soda lime has a finite ability to absorb CO2.

How long does a rebreather pack last?

Long dive times. The biggest advantage of a rebreather is gas efficiency. A single fill of a small gas cylinder or cylinders and CO2 scrubber can last for anywhere from one to six hours, depending on which rebreather it is.

How much does a rebreather system cost?

Buy a rebreather from a reputable manufacturer. If you are going to spend upwards of $10,000, you deserve to be diving a piece of equipment that has gone through proper third-party testing and validation.

What is diluent in rebreather?

The most common diluent used for rebreathers is air. For deeper dives beyond the recreational range varying mixes of trimix are used for the diluent. The diluent is commonly chosen based on reducing the amount of narcosis at depth and acceptable PPO2 levels.

What chemicals are used in rebreathers?

The common way to remove CO2 from a diver’s rebreather is by chemical absorption (“scrubbing”). Most modern commercial absorbents consist of a mixture of calcium hydroxide and sodium hydroxide. Lithium hydroxide is sometimes used in cold applications.

How do rebreathers remove CO2?

Rebreathers recycle expired gas around a closed loop circuit using one-way valves. Expired carbon dioxide (CO2) is removed as it passes through a ‘scrubber’ canister containing CO2 absorbent. The most commonly used absorbent is soda lime (a mixture of sodium hydroxide and calcium hydroxide).

Do rebreathers run out of air?

– A Longer Bottom Time A Closed Circuit diver doesn’t need to worry about running out of gas they are is limited only by decompression. This too can be minimized by selecting a partial pressure of oxygen which virtually gives the diver limitless bottom times in 60 feet or less of water.

How much does a rebreather weight?


Flight Weight (w/o cylinders) 18.25kg 16.14kg
Unit Height 57.5cm 47.5cm
Width x Depth 40 x 35cm 40 x 35cm
Summary Extended scrubber & cylinder duration. Perfect for deeper longer diving Compact, light and easy to fly

Is rebreather a mix?

IS-MixTM Rebreather – Developed for the most hostile waters. Our semi-closed rebreather, the IS-Mix, is a complete mine clearance system developed for disarming highly sensitive and explosive modern-day sea mines. Based on the well-proven ACSC and DCSC systems, the IS-Mix is built on more than 30 years of experience.

When would you use a rebreather mask?

They’re useful in situations when people have extremely low levels of blood oxygen, since they can quickly deliver oxygen to your blood. A partial rebreather mask looks similar to a non-rebreather mask but contains a two-way valve between the mask and reservoir bag.

How does a rebreather system work?

A rebreather is a breathing apparatus that absorbs the carbon dioxide of a user’s exhaled breath to permit the rebreathing (recycling) of the substantially unused oxygen content, and unused inert content when present, of each breath. Oxygen is added to replenish the amount metabolised by the user.

How much FiO2 does a non-rebreather mask?

Non-rebreather masks provide you with 60% to 91% FIO2. To do this, they form a seal around your nose and mouth. This seal in combination with the one-way valves guarantees you only breathe the gas from the oxygen tank.