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Cootwo sensor replacement

Discussion in 'General Scuba Equipment Discussions' started by seaseadee, Jan 9, 2020.

  1. seaseadee

    seaseadee Barracuda

    # of Dives: 100 - 199
    Location: Boca Raton, Florida, United States
    I’m headed on a liveaboard and I went to the divenav website to find out how to get the sensors on my cootwo replaced, but they seem to be no longer in business. Am I SOL or can I replace the sensors myself? I can handle basic electronics, solder etc if necessary.
  2. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    @seaseadee see the other thread.
    This is the model number of the sensor that's in there. They come from the UK and I haven't found a US distributor or stocking dealer. They are a simple pin connector so no electronics skills required. You will however need the bumpgas to calibrate.
    S+4 2ECOH
    seaseadee likes this.
  3. aviator8

    aviator8 Professional Photographer

    # of Dives: 25 - 49
    Location: Georgia
    I changed mine out. It is very simple to do. For the CO sensor you need to get a bump gas at @tbone1004 said. I think i paid $15 or so for one and a propane torch tip fits right on. It will last you a lifetime.

    CiTicel A02 PTB-18.10 Oxygen sensor

    The thread links to the CO and O2 sensors I got, that work fine, and were less than other sources. You can open it up and just buy the same part numbers for the O2 and CO sensors in it from various places too but they are a but more $$.
  4. seaseadee

    seaseadee Barracuda

    # of Dives: 100 - 199
    Location: Boca Raton, Florida, United States
    Am I correct in assuming that the bump gas is only for calibrating the CO sensor? I just use air to calibrate the O2 sensor?
  5. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast

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