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Yes, and that is why you have to have a carbon monoxide filter (hopkalite is what it is called, I have just learned from three different people) and you have to raise the pressure to at least 2000 psi in that filter and keep it there while pumping tanks, even when the tank pressure is well below that. This is a risk typically overlooked by operators of small tank compressors. This is another risk when trying to dive in third world countries, where they don't properly maintain their compressors. This would then also be a risk associated with penny-pinching dive shops who might not maintain their filters properly either. --p -----Original Message----- From: Terry Michael [mailto:terry-1@ly*.co*] Sent: Thursday, January 25, 2001 11:11 AM To: Webserg@ao*.co*; pina Cc: Techdiver Subject: RE: postings So, there is typically carbon monoxide in the compressor environment?-) -- On Wed, 24 Jan 2001 11:52:24 pina wrote: >All dive computers do that. They do not give you the proper shape for the >deco. You should just get a good decompression software and plug a bunch of >profiles in and study the shape of the deco, for now. Try >http://www.gue.com/decoplanner/index.shtml - it is the best one out there >that I have seen. > >As the pressure of oxygen goes up, you are not getting a linear increase in >volume relative to the pressure, so there is no sense in stressing the >regulator and stressing the valve. Also, flash fires typically occur from >fast opening a valve into a dirty environment. > >Oxygen supply bottles usually are at 2400 psi. You could boost the pressure >higher with a haskel, but the pump had better be perfectly clean to do that, >and it still is not recommended. In a compressor environment you have a >filter to take out carbon monoxide, but unless you go to great lengths with >the Haskel to ensure that it is perfectly clean, there is no sense taking >the risk. > >If you need more oxygen, which you do not for the dives you say you are >doing, you can just get an AL 40 instead. Or you can do what I did quite a >while ago, and get a pair of running shoes instead. > >peace, >--pina > > >-----Original Message----- >From: Webserg@ao*.co* [mailto:Webserg@ao*.co*] >Sent: Tuesday, January 23, 2001 1:27 AM >To: techdiver@aquanaut.com >Subject: postings > > >Hello everyone. First ide like to say thanks to everyone for all the great >information on this site. >Ive recently started doing dives to 160 fsw range with deco times from 10 to >17 minutes. With 20 and 10 foot stops to docompress. >Now from what ive been reading hear, dive tables are way off, decompression >wise. "Bending you by not doing the deep stops and treating you by extending >your shallow stops." The computer I dive with is a COCHRAN, COMANDER NITROX. >Is my computer doing the same thing? I believe it uses the HALDANE formula. >Also I want to start using 100% o2 to deco at 10' but the dive shop I >frequent doesn't think its safe to boost it over 2000psi, and they only have >80% in the banks. Well is it safe to boost to 3000psi with the HASKEL >BOOSTER >for my 30cft pony? >Thanks... > >Sergio >WebSerg@ao*.co* >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > Get your small business started at Lycos Small Business at http://www.lycos.com/business/mail.html -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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