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Thread: Xplorer Sport Rebreather from Hollis

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    Xplorer Sport Rebreather from Hollis


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    Re: Xplorer Sport Rebreather from Hollis

    Oh my goodness that's a complicated Drager.

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    Re: Xplorer Sport Rebreather from Hollis

    this is gonna be the iRebreather

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    Re: Xplorer Sport Rebreather from Hollis

    Not surprisingly, a lot of the components/design remind me of the Sentinel!

    I assume the addition of Nitrox into the loop is via an electronically controlled solenoid, rather than a constant feed a dump bellows type system?

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    Re: Xplorer Sport Rebreather from Hollis

    That was just getting interesting when it stopped mid

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    Re: Xplorer Sport Rebreather from Hollis

    flow.

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    Re: Xplorer Sport Rebreather from Hollis

    Quote Originally Posted by HMP  View Original Post
    That was just getting interesting when it stopped mid
    Played right thru for me....

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    Re: Xplorer Sport Rebreather from Hollis

    Quote Originally Posted by jptaylor9  View Original Post
    Not surprisingly, a lot of the components/design remind me of the Sentinel!

    I assume the addition of Nitrox into the loop is via an electronically controlled solenoid, rather than a constant feed a dump bellows type system?
    Yes. Gas is injected by solenoid. That way, the computer can modulate the PO2 to the user set preferences of bottom time/deco throughout the dive and also make adjustments to conserve gas if needed.
    There is also a wireless pressure transducer on the first stage which send its data to the computer.

    Probably the most interesting device in the unit (and a patented device) is the hydrostatic imbalance valve which shunts over-pressure through the valve rather than through the diver as the Dolphin used to do when you rolled over and had your cheeks explode.
    Last edited by saveourseas; 7th November 2011 at 12:34.
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    Re: Xplorer Sport Rebreather from Hollis

    Kevin Gurr has done something important, the Explorer is a VARIABLE PPO2 sport rebreather.

    The diver can set a high PPO2 limit and a low PPO2 limit. Lets say these are set to 1.30 and 0.50.

    Diving a 40% Nitrox with a MOD of 100 fsw where the PPO2 will spike at 1.60.

    On descent the ADV will maintain loop compliant volume. On reaching the bottom @ 100 fsw the PPO2 could be as high as 1.60. As the diver consumes the oxygen the PPO2 drops to 1.30 and the ESR will add gas to maintain that PPO2, and the loop control valve will vent excess gas by bubbling at 16mb. High PPO2 extends the divers range by reducing exposure to nitrogen.

    The HUD flashes Blue/Green = look at the handset which says go to a shallower depth.

    While ascending to a shallow reef at 30 fsw the rig vents through the loop control valve or the 40mb over pressure relief valve and the ESR adds gas to maintain appropriate PPO2. (a gradient from 1.30 to 0.50 matching the depth reduction) (this is a very intelligent rig)

    At 30 fsw the ESR drops the PPO2 to 0.50, extending the range of the gas.

    When the diver ascends to the surface the ESR injects gas to maintain the PPO2 within safe limits.

    Chauncey

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    Explorer rebreather

    Re: Xplorer Sport Rebreather from Hollis

    What is the planned max depth for this, will there be updates/upgrades for deeper/longer dives with more advanced training? What about offboard gas mangement? Also just for FYI will there be an option for extend air cartridges? Last thing which training agencies will be teaching this unit and when?

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