co2 carbon monoxide alarm, silicon chip kit

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george Contact options for registered users 's Avatar (by Gravatar) posted on
September 21, 2006, 2:14 pm
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Has anyone built that CO2 alarm kit features in 2005 Silicon chip. I
see DSE selling kits for
$49.95. I dont have the article and I cant see what sensor it uses
online from siliconchip
homepage.  Can someone tell me the part number of the sensor so I can
look
up some date on it.  I want to connect it to a data logger to measure
ppm. Not sure
if sensor good enough.    I want to log Sydney CO2 levels, maybe on the
Sydney bypass!


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Bob Parker Contact options for registered users 's Avatar (by Gravatar) posted on
September 21, 2006, 2:31 pm
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Re: co2 carbon monoxide alarm, silicon chip kit



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   Isn't CO2 carbon dioxide, and CO carbon monoxide? I'm confused.

Bob

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george Contact options for registered users 's Avatar (by Gravatar) posted on
September 21, 2006, 3:09 pm
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Re: co carbon monoxide alarm, silicon chip kit


oops my mistake - yes co detector


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Bob Parker Contact options for registered users 's Avatar (by Gravatar) posted on
September 22, 2006, 10:57 am
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Re: co carbon monoxide alarm, silicon chip kit



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Thanks for the clarification. :-)

Apparently the Silicon Chip design uses a Nemoto sensor. I don't
presently have access to my copy of the magazine to see exactly which
one.

The Nemoto website has quite a lot of info, so check it out at
http://www.nemototech.com/industrial/electrochem.htm

Good luck!


Bob

Mark Harriss Contact options for registered users 's Avatar (by Gravatar) posted on
September 22, 2006, 11:28 am
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Re: co carbon monoxide alarm, silicon chip kit


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Don't those sensors have a fixed shelf life?, probably the DSE
units are tired by now.

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george Contact options for registered users 's Avatar (by Gravatar) posted on
September 23, 2006, 2:08 pm
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Re: co carbon monoxide alarm, silicon chip kit


thanks for the tip, you are right, a two year shelf life is correct.
Probably why DSE is discounting.

I was told there are newer Sn02 based CO sensors used in professional
CO meters.


cheers!


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george Contact options for registered users 's Avatar (by Gravatar) posted on
September 23, 2006, 2:37 pm
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Re: co carbon monoxide alarm, silicon chip kit


thanks for the tip, you are right, a two year shelf life is correct.
Probably why DSE is discounting.

I was told there are newer Sn02 based CO sensors used in professional
CO meters.


cheers!


Mark Harriss wrote:
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