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The difference is in the form factor. Here is a post I made to another list: I have used the handy, the oxyspy, the usb stick and I own the OMS. The Oxyspy is by far the best one. Easiest to calibrate, easiest to attach to tank, easiest to hold without messing up the calibration. The only thing that the OMS is better at is speed of analysis. The oxyspy takes a bit longer. The USB I wouldn't even consider, and the handy is a throwaway unit, ok to use, but not a serious unit for someone who needs something for the long haul. I have the OMS with a built in flow meter, and it's fine to use but more finicky to calibrate and to hook up (needs lp inflator). I think the OMS would make a good unit to have in-line in a filling station. I'll probably end up getting the oxyspy eventually. Cheers. Art.Paltz@R2*.CO* wrote: ~ >I bought from http://www.oxygenanalyzer.com/ > >In my opinion they are all pretty much the same except for the price. If >you think about it, all it is, is a panel meter (volt meter) and an O2 >sensor. As far as I know all panel meters are pretty much the same in the >range we are talking (1-2%). If we were measuring where millionths of a >volt mattered then there would be a difference. I don't know for sure but >even a one percent reading for the oxygen content is only like a millivolt >and I don't think that's too hard to read for most volt meters. You're >variance is really going to be in the sensor which if you read the specs is >pretty much a percent or 2. I don't know the difference in the sensors, >you'd have to ask someone else but again, for our purpose, they are all >pretty much the same as long as kept relatively fresh. You should be >selecting an O2 content (Po2) that is not going to kill you and is way in >the save zone. If you are pushing really hot bottom or decompression mixes >then you probably should be changing the sensor all the time as they do >degrade over time (should you choose to be this dumb). If you have some >reason that I can't really think of where you need to use these type of >mixes you might want to invest in a spectrum analyzer cause being extremely >accurate probably matters. > >The one at the above site is pretty much the same thing as the one you can >build in the O2 hackers handbook. If you are like me and bought all the >parts (minus sensor) to build one yourself but are too lazy to do it, then >this is a good deal for you. > >I wouldn't believe the claims of sensors lasting forever on some analyzers. >They all go! It's just that I think some of them have a cap to cap off the >sensor when not in use so it stops degrading until the next use. You can do >this yourself by putting the analyzer and sensor in an air tight pelican >box.... A lot cheaper and you should probably have the analyzer/sensor in a >box anyway so it's doesn't break it..... > >Just my opinion, hope it helps. >Art. > > > -----Original Message----- >From: The McLeods [mailto:rmmacleod@ac*.ca*] >Sent: Sunday, October 21, 2001 8:16 PM >To: techdiver >Subject: O2 anylizer > >Hi list,I'm looking to buy a new O2 anylizer.I'd like some opinions on which >one is best,best buy,best made ect.Are all the makes available in Canada,how >much are replacement sensor's and what are the best features.Thank's in >advance,Randy > >-- >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'. -- Paul B. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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