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CO O2 combo meter?

Discussion in 'Accessories' started by tna9001, Jan 13, 2021.

  1. tna9001

    tna9001 Solo Diver

    # of Dives: 25 - 49
    Location: Asheville NC USA/Roatan
    62
    23
    8
    Hello all,

    Is there a combo gas meter for CO and O2?
     
  2. jale

    jale Manta Ray

    538
    322
    63
    used to have... I wish some one would market one
     
  3. JohnN

    JohnN ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: Oar--eee---gun
    2,315
    1,131
    113
    Ahhh. The sad tale of DiveNav. They made a capable O2-CO analyzer but a limited product line and piss-poor customer service lead to their demise.
     
    D_Fresh, BurhanMuntasser and jale like this.
  4. David Novo

    David Novo REEF Volunteer

    # of Dives: 100 - 199
    Location: Porto, Portugal, Europe
    545
    195
    43
    +1
     
  5. tbone1004

    tbone1004 Technical Instructor ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    17,874
    10,077
    113
    wish Divesoft would get their act together and put CO in their trimix analyzer.

    You can probably get Nuvair to make you one, but it is going to cost about $800 and may take a while since it is not a stock part number
     
  6. BurhanMuntasser

    BurhanMuntasser Dive Charter

    # of Dives: I'm a Fish!
    Location: Nomad
    6,296
    2,426
    113
    It wasn't a great product unfortunately in addition to their horrible customer service. One of the issues was your having to send it back to the company for calibration once a year. I believe it wouldn't work if you didn't send it back for calibration after one year.
     
  7. tbone1004

    tbone1004 Technical Instructor ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    17,874
    10,077
    113
    you didn't have to send it back for calibration. I've been calibrating mine at home since I got it. You did have to send it back for firmware updates which is annoying and mine doesn't have the latest firmware which means it will eventually brick when the app is no longer supported, but hopefully that doesn't happen for a while.
     
    tridacna likes this.
  8. BurhanMuntasser

    BurhanMuntasser Dive Charter

    # of Dives: I'm a Fish!
    Location: Nomad
    6,296
    2,426
    113
    The impression I got from the owner way back when I contacted them was that the unit had to be sent back to them for the calibration.
     
  9. tbone1004

    tbone1004 Technical Instructor ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    17,874
    10,077
    113
    nope, you can calibrate from the app and if you have the newest firmware then from the device I believe. One of the ways you could swag calibrate was by exhaling into the unit and while it wouldn't be "accurate" in terms of 2ppm being 2ppm, it would give you a go-nogo of whether there was CO in the sensor. You did need to buy bump gas and a regulator to calibrate it though which a lot of people didn't/don't want to do but we have it for work so it isn't an issue for me. You can also replace the CO sensors yourself and I have one sitting on my desk right now actually.
     
    BurhanMuntasser likes this.
  10. kelemvor

    kelemvor Big Fleshy Monster ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: Largo, FL USA
    6,753
    3,859
    113
    If you can find a used one, third parties are selling the sensors. I've been replacing sensors and recalibrating mine since divenav took a dump. I did have to buy a bottle of CO for the calibration, which is expensive because of the hazmat shipping.

    I wonder how hard it would be to hook a jtag to it and dump the firmware so folks like @tbone1004 could get updated.

    I think there's a dual gas analyzer on the DIY forum that seems pretty easy and inexpensive.

    He later changed his tune.
     

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