Explosimeter??
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From: steamer on 11 Dec 2009 02:41 --Heh. I noticed that there are a variety of sensors, including one specific to CO; I wonder if, using two sensors, I might be more able to 'bracket' the value I'm wanting to detect, or is this redundant info.. -- "Steamboat Ed" Haas : Currently broke and Hacking the Trailing Edge! : looking for a job... www.nmpproducts.com ---Decks a-wash in a sea of words---
From: Clint Sharp on 10 Dec 2009 16:19 In message <4b1e9ee5$0$1668$742ec2ed(a)news.sonic.net>, steamer <steamer(a)sonic.net> writes > --Thanks; will check 'em out. > Might also be worth checking out oxygen fuel cells, they'd allow you to measure the amount of o2 in the atmosphere, possibly enabling you to calculate the ratio of flammable gas to oxygen and determine if it's an explosive level. -- Clint Sharp
From: Jasen Betts on 12 Dec 2009 06:13 On 2009-12-10, Clint Sharp <clint(a)clintsmc.demon.co.uk> wrote: > In message <4b1e9ee5$0$1668$742ec2ed(a)news.sonic.net>, steamer ><steamer(a)sonic.net> writes >> --Thanks; will check 'em out. >> > Might also be worth checking out oxygen fuel cells, they'd allow you to > measure the amount of o2 in the atmosphere, possibly enabling you to > calculate the ratio of flammable gas to oxygen and determine if it's an > explosive level. stochiometry is not critical for explosions. it's more the partial pressure of the explosive fuel and the partial pressure of the oxidiser need to be above some limit.
From: steamer on 12 Dec 2009 13:34 Jasen Betts <jasen(a)xnet.co.nz> wrote: >stochiometry is not critical for explosions. it's more the partial >pressure of the explosive fuel and the partial pressure of the oxidiser need >to be above some limit. --Soooo could I still use these same type of sensors to interpolate mixture or should I be looking to a different solution? -- "Steamboat Ed" Haas : Currently broke and Hacking the Trailing Edge! : looking for a job... www.nmpproducts.com ---Decks a-wash in a sea of words---
From: Jasen Betts on 13 Dec 2009 04:25
On 2009-12-12, steamer <steamer(a)sonic.net> wrote: > Jasen Betts <jasen(a)xnet.co.nz> wrote: >>stochiometry is not critical for explosions. it's more the partial >>pressure of the explosive fuel and the partial pressure of the oxidiser need >>to be above some limit. > --Soooo could I still use these same type of sensors to interpolate > mixture or should I be looking to a different solution? the platunum catalyst hot-wire sensors work by oxidising fuel the gas, and so, they are testing for the presense of both fuel and sufficient oxygen. the tricky bit could be finding one that can sense mixtures that are rich enough to be explosive. these ones might work for you http://jaycar.com/productView.asp?ID=RS5610 |