Computer to monitor air for two divers
- Thread starter Snoweman
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I find that two buddies asking each other to sign how much gas they have remaining is a way to keep tabs on more than just the gas. Taking a few seconds to do that throughout the dive affords opportunities to sense stress, narc, discomfort, etc. People can be as oblivious to those things in themselves or, if aware of them, as reluctant to alert a buddy about them as they can gas information. You can't often see your buddy's face for such clues the way you could if you were, say, on a hike in the mountains. A nice relaxed signing of a number in reply to a buddy's inquiry tells more than just how much gas they have left. Just asking "are you okay" every five minutes throughout a dive can get boring, so my wifebuddy and I like to mix it up by sometimes asking each other "okay?" and sometimes asking "gas?" Not to mention sometimes asking things like "Did you see that huge turtle!" We sign a lot to each other throughout the dive for the aforementioned reasons. I know full well that my wife monitors her gas religiously and will take the appropriate action when it's time--we train together. Heck, I know her SAC and can estimate how much gas she has, assuming everything is normal. It's not really the gas we're asking about.
Kieterkat
New
Hi all. This thread has aged a little so I would like to ask the question again. Could someone please just list the make and model of the dive computers that are able to monitor my air and my buddy’s air. I’m aware of why people disagree on that practice, but it would help my anxiety to have a backup like that for my significant other to be able to see my air. I have a console with my computer and pressure gauge that I will monitor religiously and we will also check in about air regularly. Again. Only interested in the computers that can read his transmitter and mine. Thanks in advance.
Uwatec Luna & Sol
I'll presume the G2 does as well
Shearwater Perdix AI and Teric
More computers, I'm sure. I dive that way. So does my wife.
I'll presume the G2 does as well
Shearwater Perdix AI and Teric
More computers, I'm sure. I dive that way. So does my wife.
Kieterkat
New
OP
Just remember that you will need to be within a few feet of your buddy to read their transmitter.
CT Sean
Contributor
Looks like a pretty common feature on today's Wireless AI computers. I would pick the one you like and confirm it has multiple transmitter capability
Not at all times. Just when you want to know.
On my Perdix AI, for example, when I look at the graph of a dive for the two of us, my tank pressure line is a solid wiggle all the way down the dive. My buddy's is a set of segments in bold, connected by paler straight line interpolations from the last registered pressure to the first new received value, on and off during the dive, as he drifted in and out of range. Our two lines sort of parallel, at our differing rates of consumption. Mine is complete, his line is a connected set of segments.
On the computer, there's an interval where "no data" is displayed, eventually replaced with four dashes. When his transmitter comes back in range, his numbers reappear on my computer.
RonR
Contributor
RF transmission underwater is going to be limited to a few feet, maybe 2-3 meters, for devices small enough for a diver to carry. Some buddy pairs/ groups might stick really close, others might not. You would just have to determine if the performance fits your goals.
Liquivision computers (the company has now shut down, so they are only available used and not really supported) used acoustic transmission, which would provide basically line of sight data to a few hundred feet for buddies- I believe up to 10.
We have a next generation acoustic system in development that provides ranges in the hundreds of feet, but for currently available products I think the answer is that many wireless AI computers provide the capability of monitoring multiple tanks, but will only do so if those tanks are in close proximity.
-Ron
Liquivision computers (the company has now shut down, so they are only available used and not really supported) used acoustic transmission, which would provide basically line of sight data to a few hundred feet for buddies- I believe up to 10.
We have a next generation acoustic system in development that provides ranges in the hundreds of feet, but for currently available products I think the answer is that many wireless AI computers provide the capability of monitoring multiple tanks, but will only do so if those tanks are in close proximity.
-Ron
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