<html><head><meta http-equiv="content-type" content="text/html; charset=us-ascii"></head><body dir="auto"><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/">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:5DA2EEA8-1481-4796-BA25-4AEF05A14B1F" alt="image1.jpeg" id="5DA2EEA8-1481-4796-BA25-4AEF05A14B1F"></div></body></html>