+ Reply to Thread
Page 1 of 4 1 2 3 4 LastLast
Results 1 to 10 of 31

Thread: diving the copis meg

  1. #1
    Dave Tomblin
    wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc's Avatar
    Join Date
    Feb 2005
    Location
    Vancouver Island BC Canada
    Posts
    3,635
    Hollis Prism 2, Megalodon

    CCR Instructor Trainer

    diving the copis meg

    When Leon was up here a couple of weeks ago he left me a copis head to play with. I guess since I was already a KISS and a CCR/Dolphin diver he figured the copis should be easy to figure out (OK at least I already had a non-compensated 1st stage). Here are my impressions of my first dive using the copi.
    For those who don't already know copis stands for continuous oxygen pressure injection system and it works like some other rebreathers of this nature that add a set flow of oxygen to replace the divers resting inspired O2 and the diver must manually add O2 to suppliment depending on the workload.
    The copis head looks very much like a standard meg head with a single wire leading to the hand set and no HUD or secondary. The handset consists of 3 LCD readouts and are calibrated digitally not manually (using pots). It also has wet connectors to prevent accidentally changing the calibration in water.
    I installed the first stage from my CCR/Dolphin which was used with a kiss valve and therefore had the IP compensation blocker installed. After installing all the MEG hoses and filling the scubber I began a 30min couch dive. The objective there was to get an IP setting on the first stage that resulted in a stable PPO2 under resting conditions. What I was looking for was a PPO2 that was either constant or falling slightly. I eventually obtained that for a steady 10 minutes (actually the phone always rings when I do this so I did it twice).
    After getting my PPO2 stable I hooked up an IP gauge and measured 150psi exactly. That was slightly higher than the setting with my KISS valve.
    Last night I dove the unit at the Ogden Point Breakwater in Victoria. It is a really nice dive with a gradually sloping bottom that starts at about 20ft and maxes out at about 80ft. Perfect location for my test. The other bonus that I wasn't expecting was the tide. There was a fair ebb tide pushing us out to the end of breakwater. Once I got settled in at about 30ft I was reading a PPO2 of about .9 so I tapped the O2 on the right CL and watched my monitors. One thing I still have to get used to on the meg is the lag time between manual O2 addition and it hitting the sensors. It only took a couple more taps to get the process dialed in. Actually during my training Leon insisted that we set our unit to 1.2 but keep it at 1.3 manually. This made flying the copis rather intuitive and far less task loading than I expected. After about 35 minutes it was time to turn. We were now swimming against the tide and it was a bit of work. Also since we were now beginning a gradual ascent I had to watch PPO2 more closely. I need to learn to vent then add while ascending since I dive with only enough weight to keep a minimum amount in my CL. During the trip back I let my PPO2 drop to 1.0 when my buddy stopped to harrass a crab. Other than that it was a pretty easy task to keep things in check.
    This unit has no redundancy for displays and so if there was a malfunction of PPO2 monitoring I guess OC bailout is the only option. With a HUD or back-up monitoring system this would be a more versatile unit but as it stands it is a simple, very easy to use alternative to the ECCR meg.
    I will continue to dive it for a few more days at least until thursday when I have a deco dive planned then it's back to the regular MEG
    I need to put on my check-off list ___remove IP blocker
    Last edited by wedivebc; 29th June 2006 at 23:13.
    Cheers,

    Dave....

    www.wedivebc.com

  2. #2
    Stefan Besier caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7 has a reputation beyond repute caveseeker7's Avatar
    Join Date
    Jan 2005
    Location
    Germany
    Posts
    5,676
    PRISM Topaz & Sport KISS

    (still owned) MK15

    Re: diving the copis meg

    Thanks for the write-up. Sounded really good till you got to the lack of redundancy.

  3. #3
    A Prismer in Megland Underwaterbear has a spectacular aura about Underwaterbear has a spectacular aura about Underwaterbear has a spectacular aura about Underwaterbear has a spectacular aura about Underwaterbear has a spectacular aura about Underwaterbear has a spectacular aura about Underwaterbear's Avatar
    Join Date
    May 2005
    Location
    Seattle, WA
    Posts
    254

    Re: diving the copis meg

    The handset consists of 3 LCD readouts and are calibrated digitally not manually (using pots).
    ...snip...
    This unit has no redundancy for displays and so if there was a malfunction of PPO2 monitoring I guess OC bailout is the only option.
    Thanks for the review. Surely the 3 readouts are independent with the exception of shared power supply? So losing a sensor leaves you with the same options as for the KISS and losing the power supply leaves you with SCR and 100% O2 at suitable depth. Or have I missed something?
    Regs,
    AB

  4. #4
    Dave Tomblin
    wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc has a reputation beyond repute wedivebc's Avatar
    Join Date
    Feb 2005
    Location
    Vancouver Island BC Canada
    Posts
    3,635
    Hollis Prism 2, Megalodon

    CCR Instructor Trainer

    Re: diving the copis meg

    Quote Originally Posted by Underwaterbear
    Thanks for the review. Surely the 3 readouts are independent with the exception of shared power supply? So losing a sensor leaves you with the same options as for the KISS and losing the power supply leaves you with SCR and 100% O2 at suitable depth. Or have I missed something?
    Regs,
    AB
    The 3 displays share a common battery and a common housing but yes each sensor drives its own display.
    This is a prototype version and I expect there will be a seperate redundant display (HUD I'm guessing) in the production model.
    Last edited by wedivebc; 30th June 2006 at 13:25.
    Cheers,

    Dave....

    www.wedivebc.com

  5. #5
    RBW Member RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan has a reputation beyond repute RonMicjan's Avatar
    Join Date
    Feb 2005
    Location
    Portland Oregon USA
    Posts
    1,238

    Re: diving the copis meg

    The COPIS is meant for an entry level recreational rebreather diver who wants the robustness, awesome WOB, and the array of upgrades and options the MEG offers. Perfect for the upgrading KISS diver who is thinking of later going tech, swap a head for APECS at a later date and you now have all the redundancy of two systems. Nice write up dave. did you email that to Leon?

  6. #6
    Life starts at 100 rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo's Avatar
    Join Date
    Sep 2005
    Location
    Stockholm Sweden
    Posts
    864
    Pelagian DCCCR

    Classic KISS, Megalodon

    Re: diving the copis meg

    Very interesting!
    Keep us posted on how you like it in the future..
    Cheers
    Rodge

  7. #7
    Holiday diver denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel's Avatar
    Join Date
    Aug 2005
    Location
    Perth!
    Posts
    358

    Re: diving the copis meg

    So i I understand this correctly.......(pls do correct me)
    The COPIS is a standard meg apart from the head, which is now kiss style as opposed to normal ECCR electonics and selenoids etc in there.
    And if one were to purchase such an COPIS, then in time (and funds) one could only buy an ECCR head, and one would have a normal complete standard Meg?

    Denz.

  8. #8
    Life starts at 100 rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo is a glorious beacon of light rogeringebo's Avatar
    Join Date
    Sep 2005
    Location
    Stockholm Sweden
    Posts
    864
    Pelagian DCCCR

    Classic KISS, Megalodon

    Re: diving the copis meg

    Thats the whole idea,as I understand it......will give KISS a run for their money,that for sure.....
    Rodge

  9. #9
    Holiday diver denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel is a splendid one to behold denzel's Avatar
    Join Date
    Aug 2005
    Location
    Perth!
    Posts
    358

    Re: diving the copis meg

    "Will give kiss a run for their money"

    Mmm, probably depends on the $$$$, since the kiss is pretty affordable.
    On the otherhand, the idea is great. Wouldn't mind it, seeing as you could start out a lot cheaper, get the experience, and upgrade the unit along with your experience....

    Denz.

  10. #10
    Hammerhead CCR diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike has a reputation beyond repute diverklondike's Avatar
    Join Date
    Oct 2005
    Location
    Delaware, USA
    Posts
    3,042
    HammerHead CCR

    It's Classified

    Re: diving the copis meg

    It also makes a nice "back-up" head....

+ Reply to Thread
Page 1 of 4 1 2 3 4 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts