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Thread Status: Hello , There was no answer in this thread for more than 60 days.
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New Member
May 14, 2004
I would like to know about oximeters; basically, I would like a way to measure my 02 and C02 levels, if possible underwater. Is that possible? What is an oximeter? How much does it cost? Does it only work on the surface?
You can make an oximeter which works underwater, if you know how to make your own, but there are no commercially available ones (to my knowledge). I was working on one for a while, and it sort of worked, but I never got to building a housing for it.

Eric Fattah
BC, Canada
I saw information of a pulse oximeter you could wear around your wrist with a sensor on the finger. Perhaps you could build some watertight drysuit like thing for your arm. :duh


Another question is if there are sensors which (perhaps with the use of an extension cable) could be used in water. For example during static near the edge of a pool. That way the pulse oximeter itself would not have to be waterproof but just the sensor and last part of the cable leading to the sensor.
Has anyone got a clue? :confused:
I tried using an oximeter during static, with my hand out of the pool. The blood shift was so strong that the signal on the oximeter was delayed by over a minute and never reached a realistic value. You would probably need a waterproof forehead sensor.

Eric Fattah
BC, Canada
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