<html><head></head><body><p dir="ltr">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.</p>
<p dir="ltr">Sean<br>
</p>
<br><br><div class="gmail_quote">On November 25, 2014 1:20:00 PM MST, hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="k9mail">Hi all,<br />Can you guys tell me what type of O2 monitoring device your using and do you recommend it.<br />Thank you<br />Hank<br /><hr /><br />Personal_Submersibles mailing list<br />Personal_Submersibles@psubs.org<br /><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br /></pre></blockquote></div></body></html>