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cootwo oxygen sensor lasts for less than 1 year

Discussion in 'DiveNav' started by vovanx, Feb 1, 2019.

  1. 68raggtop

    68raggtop Solo Diver

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    Mine was 2+ years old and working fine until I dropped the Cootwo on the boat on the first day of the trip last month. Two bad things happened then. The tabs that connect the + and - of the battery bent so the the battery could no longer power the device. After I got back to the room, I re-bent the tabs so it had power. First thing I saw was it needed CO calibration. It no longer had the CO data so it needs a new CO calibration. Using the app, I set it to try and use as O2 only mode until I can do that, but when I went to calibrate the sensor was only outputting around 7mv instead of the usual 12mv. Fortunately I have an abundance of those that came from my rebreather and swapped it for one of those once I got home. No Cootwo for the remainder of the trip though.
    Bottom line is don’t drop your Cootwo!
    Also as tbone1004 said, when analyzing higher O2% gas, the app will let you do a 2 point calibration.
     
  2. 68raggtop

    68raggtop Solo Diver

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    You can change how long the calibration is valid for, up to 48 hours max using the app. 48 hours is the max though, unless someone found a way around that.
     

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