<div dir="ltr">Cliff, Thanks for answering the question I was just going to ask. Did you build any special case to mount for replacement? I need to back and see the line of code you used so I can use it in my DoMore PLC<br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Best Regards,<br>David Colombo<br><img src="http://static.squarespace.com/static/533310a9e4b0fba62008a464/t/5339c1f2e4b041bac4e25d1b/1396294132055/?format=500w" height="110" width="200"><br>804 College Ave<br>Santa Rosa, CA. 95404<br>(707) 536-1424<br><a href="http://www.SeaQuestor.com" target="_blank">www.SeaQuestor.com</a><br><br></div></div></div></div>
<br><div class="gmail_quote">On Thu, Feb 2, 2017 at 2:46 PM, via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>I have had good performance from this company but with their K30 sensor. $85 and does give 0-5v analog output signal. It span is 0-10,000 ppm (0-2%).</div><div id="m_7690539758128035409AppleMailSignature"><br></div><div id="m_7690539758128035409AppleMailSignature">Cliff<br><br>Sent from my iPad</div><div><div class="h5"><div><br>On Feb 2, 2017, at 2:37 PM, River Dolfi via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.<wbr>org</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div><div><div>I did side-by-side tests on several low-cost ambient CO2 sensors when I was doing air quality instrumentation work, and I eventually settled on these units from COZIR. <br><a href="http://www.co2meter.com/products/cozir-0-2-co2-sensor" target="_blank">http://www.co2meter.com/<wbr>products/cozir-0-2-co2-sensor</a><br><br></div>They're only about $70US, have built in self calibration, super reliable, and have very low current draw compared to other sensors. The big rub is that it isn't analog output, but serial.<br><br></div>You would have to interface it with a microcontroller (which is an easy enough job with a $20 Arduino) and have it set up to display to an LCD, trip an alarm at critical levels, possible demand control of the scrubber, other sensors, etc.<br><br></div><div>I have an identical system built for the health department currently running 70 (70!!!) of these sensors and others on battery power across the city in the elements. They are that good.<br></div><div><br></div>I recently found about half of a medical scrubber in a dumpster, so I've been thinking about life support lately.<br></div>
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