Has anyone replaced the O2 senors in a CooTwo analyzer?

[tbone1004]

Forrest, sensor is the same as the ones in your sidekick, r-22's. Easy to replace

for those that need CO calibration, if you are nice to your local fire department, and they have a bauer fill station, there should be 0 and 20 ppm CO cal gas along with a regulator on the compressor side of the fill station. That's where I calibrated mine. For a short fix, just exhale into it and tell it that it is 20ppm, you will get some wonky CO readings but it will work

[FW]

Make sure it is 20ppm CO

Why? The CooTwo instructions say 10, 15, or 20ppm.

[sdenney]

Why? The CooTwo instructions say 10, 15, or 20ppm.

You're right, but the link you posted was for 100ppm

[FW]

You're right, but the link you posted was for 100ppm

Ah, thanks!

I am going to send the whole thing back to DiveNav, and have the O2, and CO sensors replaced, and calibrated. They will also update the firmware free. I can research the right bump gas next year.

[tursiops]

Ah, thanks!

I am going to send the whole thing back to DiveNav, and have the O2, and CO sensors replaced, and calibrated. They will also update the firmware free. I can research the right bump gas next year.

Good call. The new firmware is much more useful.

[rddvet]

Ah, thanks!

I am going to send the whole thing back to DiveNav, and have the O2, and CO sensors replaced, and calibrated. They will also update the firmware free. I can research the right bump gas next year.

Sounds like a pain. I'll stick with separate units. Cant beat analox (i know they dont make co anymore) and oxycheq


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[FW]

Sounds like a pain. I'll stick with separate units. Cant beat analox (i know they dont make co anymore) and oxycheq


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Well, you have to understand that I got mine from the kickstarter program, and they have come a long way since then.

FWIW, I used to have separate units, but tended not to actually use both each time I tested.