[PSUBS-MAILIST] O2 gauge

[Sean T. Stevenson via Personal_Submersibles]

Most packaged oxygen monitors use similar off-the-shelf galvanic oxygen sensors from Maxtec / Teledyne / etc. The cells just produce a small voltage which is proportional to the oxygen concentration, and this signal is amplified and displayed by the signal conditioner, which can be as simple as a panel meter in a box (El Cheapo, et al) or can be conditioned by any computer or programmable automation controller with the appropriate data acquisition capabilities.  When looking for a sensor for 1 ATM sub use, keep in mind the necessary measurement range - you don't need a sensor capable of high PPO2 such as those used in rebreathers when the maximum possible PPO2 in a 1 ATM space is 1 ATM.

Sean


On November 25, 2014 1:20:00 PM MST, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Hi all,
>Can you guys tell me what type of O2 monitoring device your using and
>do you recommend it.
>Thank you
>Hank
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