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<div dir="ltr" data-setdir="false">CO2 meter has an RS485b analog model. But I'm curious, why use voltage instead of serial?</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Jon</div><div dir="ltr" data-setdir="false"><br></div><div><br></div>
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On Wednesday, August 7, 2019, 09:45:45 PM EDT, Alan via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="ydpa20c71cbyiv7392378644"><div><div><span></span></div><div>Hi,<div></div><div>I've been reading a bit about the solid state optical oxygen sensors which</div><div>have a longer life & are more reliable than traditional galvanic cel ( battery)</div><div>type O2 sensors. </div><div>Poseidon developed them for the dive industry & they were hailed as a break</div><div>through at the time. There is a company, SST sensing that is marketing them for </div><div>varying applications....<a href="https://www.sstsensing.com/optical-oxygen-sensors-key-benefits-and-applications/" rel="nofollow" target="_blank">https://www.sstsensing.com/optical-oxygen-sensors-key-benefits-and-applications/</a></div><div>Is any one familiar with them? There seems to be a big price difference between</div><div>varying brands.</div><div>The ones I've seen are calibrated internally for pressure & temperature & transmit </div><div>data rather than a voltage or current reading. I am looking for a cheap option that </div><div>has a current or voltage signal rather than data & I will be using something like a raspberry Pi or Arduino to process the reading.</div><div>I am also wanting 3 as in a rebreather to compare readings.</div><div>Do they need much of an O2 flow over them or are they ok just being placed </div><div>randomly within the hull?</div><div>Cheers Alan</div></div><div><img src="cid:VoYjQJTrWd6C0eMQ5WX0" alt="image1.jpeg" id="ydpa20c71cbyiv73923786445DA2EEA8-1481-4796-BA25-4AEF05A14B1F" data-inlineimagemanipulating="true" data-id="1565231261746"></div></div></div>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div>
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