70' + computer choice

[EIGHTWGT]

:06: Guys

Im looking for a computer.... All the diving I do is 70' -140'.
I want a wrist mounted computer that is a 'middle player' as far as being conservative - in other words I dont want one that is way too conservative nor do I want one that will let me go to the limit every dive either....

I dive Nitrox by the way... I do not want AI

Advice please.....

 

[pdoege]

Hello -

I've been using a Mares M1 and a Cressi Archimede at those depths for about 200 dives now. Never a problem. They seem to be pretty average in conservatism.

The 70-140 foot range is not all that demanding. You probably would not go wrong with any of the computers on the market.

Good luck,
Peter Doege

 

[UndrWatrDan]

I use the Oceanic Atom and have used it from 20 - 130' with excellant results.

 

[Vie]

The Atom is one of the most “aggressive” recreational dive computers out there (along with the current range of Pelagic/Oceanic/Aeris computers). Go with Suunto if you want a “mid-range” conservative algorithm. Of course if you feel that your computer is too “aggressive,” you can probably set it to be more conservative—most newer dive computers have this function.

 

[Charlie99]

The Atom is one of the most “aggressive” .. (along with the current range of Pelagic/Oceanic/Aeris computers). Go with Suunto if you want a “mid-range” conservative algorithm. Of course if you feel that your computer is too “aggressive,” you can probably set it to be more conservative—most newer dive computers have this function.

An interesting, although not widely understood, difference between Pelagic and Suunto computers is what information is displayed on the bargraph. The Suunto bargraph is simply a redundant display of the NDL time remaining. The Pelagics show the loading of the leading tissue as a percentage of the maximum allowable value, i.e. M-value. While this may seem like extraneous, theoretical knowledge, it makes a huge difference in your ability to effectively adjust conservatism on the fly.

When you return to shallow depths, the Suunto bargraph will immediately go back in the green, provided you still have quite a few minutes of NDL left at 15 feet ---- normally this is the case. OTOH, the Pelagic computers will continue to show that you have a heavy N2 loading, and will only slowly back off out of the yellow zone as you offgas while at the safety stop.

If you wish to dive a Pelagic computer conservatively, simply choose a limit point on the bargraph other than the NDL/deco transition.

 

[teknitroxdiver]

Right now I'm diving a Tusa IQ-800; it seems to be a very nice computer, and kind of middle-of-the-road as far as conservancy goes (that bit of info was gathered by comparing with a Cobra and an older Aeris wrist computer). I dove a Suunto for about 75 dives, and the graphing as mentioned above drove me insane. I much prefer the Tusa's Pelagic-style graphs: it measures tissue loading and will show both nitrogen and oxygen loading on the surface as well.

 

[StSomewhere]

An interesting, although not widely understood, difference between Pelagic and Suunto computers is what information is displayed on the bargraph. The Suunto bargraph is simply a redundant display of the NDL time remaining. The Pelagics show the loading of the leading tissue as a percentage of the maximum allowable value, i.e. M-value. While this may seem like extraneous, theoretical knowledge, it makes a huge difference in your ability to effectively adjust conservatism on the fly.

If the Suunto was really RGBM (and we all know its not) the whole max M-value thing goes out the window anyway.

 

[H2Andy]

other than being on the "aggressive" side (i hate that term... but there you have it)
i would reccomend the Aeris Atmos 2

cheap, reliable, nitrox, wrist, user-replaceable batteries, humongous battery life,
tons of features, and did i mention cheap?

i've used it for quite some time, and it's awesome. you can always dive more
conservative profiles if you want to.

 

[jakubson]

An interesting, although not widely understood, difference between Pelagic and Suunto computers is what information is displayed on the bargraph. The Suunto bargraph is simply a redundant display of the NDL time remaining. The Pelagics show the loading of the leading tissue as a percentage of the maximum allowable value, i.e. M-value. While this may seem like extraneous, theoretical knowledge, it makes a huge difference in your ability to effectively adjust conservatism on the fly.

When you return to shallow depths, the Suunto bargraph will immediately go back in the green, provided you still have quite a few minutes of NDL left at 15 feet ---- normally this is the case. OTOH, the Pelagic computers will continue to show that you have a heavy N2 loading, and will only slowly back off out of the yellow zone as you offgas while at the safety stop.

If you wish to dive a Pelagic computer conservatively, simply choose a limit point on the bargraph other than the NDL/deco transition.

Thanks for the info! Although I use the "stay in the green" rule for my Versa Pro on multilevel tropical dives (where it is easy to just go up 5 or 10 feet and still be on the wall) it is nice to know what the bar graph represents. I guess I intuitively knew that, since it still shows 4 or 5 green bars at the safety stop.

 

[EIGHTWGT]

other than being on the "aggressive" side (i hate that term... but there you have it)
i would reccomend the Aeris Atmos 2

cheap, reliable, nitrox, wrist, user-replaceable batteries, humongous battery life,
tons of features, and did i mention cheap?

i've used it for quite some time, and it's awesome. you can always dive more
conservative profiles if you want to.

Andy - That is the computer I was and have been looking at. I got concerned about it though after reading about it being a quite liberal computer. Maybe I will start leaning towards it again.
Where do you typically dive out of ? I see that you are in Jacksonville.

We should hookup sometime and dive....

Roatan huh ?? You should look up Karl Stanley while you are there and go down in his sub. He is a cool guy - I had his sub at my boat shop for over a year... VERY cool.....
(www.stanleysubmarines.com)