[PSUBS-MAILIST] scrubber performance

[David Colombo via Personal_Submersibles]

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

Best Regards,
David Colombo

804 College Ave
Santa Rosa, CA. 95404
(707) 536-1424
www.SeaQuestor.com


On Thu, Feb 2, 2017 at 2:46 PM, via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> 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%).
>
> Cliff
>
> Sent from my iPad
>
> On Feb 2, 2017, at 2:37 PM, River Dolfi via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> 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.
> http://www.co2meter.com/products/cozir-0-2-co2-sensor
>
> 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.
>
> 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.
>
> 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.
>
> I recently found about half of a medical scrubber in a dumpster, so I've
> been thinking about life support lately.
>
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