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fin · 1st April 2008, 21:55

Quote: (Originally Posted by diveoceanos)

Gas Sensors

Would something like this possibly be a solution for CO2 detection somewhere before the inhalation counterlung?

Have a look at the link. It costs only 20 USD and it can detects CO2 at a range between 0 and 10,000. Check the data sheet. it is electronic component. It is much smaller than an infrared gas analyser which has a size of a refrigerator. It is only 16mm diameter by 21mm height!

CO2 is an ungly thing and it would be nice to have a sensor in our loop.

Any folks with electronic knowledge that could possibly give us some more information?

There are at least two solid electrolyte CO2 sensors in the market. TMG811 by Hanwei Electronics and CDM4161 or CDM4161A by Figaro. I will be experimenting with the second from now on but it is very early to say anything.
That is if Tom Rose will not come to a final product (using IR absorption measuring) until then. Mr Rose is far ahead on this (see http://www.rebreatherworld.com/cells...at-dema-4.html ).
Only time will tell.

1st April 2008, 21:55	#2 (permalink)
fin New Member Current Rebreather/s: Megalodon Dolphin Other Rebreather/s: Megalodon Dolphin Join Date: Jul 2006 Location: Thessaloniki, Hellas (Greece) Posts: 49	Re: Check this CO2 sensor out. Quote: (Originally Posted by diveoceanos) Gas Sensors Would something like this possibly be a solution for CO2 detection somewhere before the inhalation counterlung? Have a look at the link. It costs only 20 USD and it can detects CO2 at a range between 0 and 10,000. Check the data sheet. it is electronic component. It is much smaller than an infrared gas analyser which has a size of a refrigerator. It is only 16mm diameter by 21mm height! CO2 is an ungly thing and it would be nice to have a sensor in our loop. Any folks with electronic knowledge that could possibly give us some more information? There are at least two solid electrolyte CO2 sensors in the market. TMG811 by Hanwei Electronics and CDM4161 or CDM4161A by Figaro. I will be experimenting with the second from now on but it is very early to say anything. That is if Tom Rose will not come to a final product (using IR absorption measuring) until then. Mr Rose is far ahead on this (see http://www.rebreatherworld.com/cells...at-dema-4.html ). Only time will tell.
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