Oceanic computers
- Thread starter Sponon
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raw walker is right on with all of his posts... I solo deco on ai atom2's 3000 dives one transmitter failure. My computers show within a bar or two....I have seen MANY spg's showing 30 bar when not attached to a tank....Do I back up with spgs ? occasionally. I have four transmitters and depending on the dive type and profile I may throw an analog spg on my doubles... even on stage bottles, but come on, there was a time when the model T was NEW technology. AI has proven itself to me on thousands of dives, I will no longer address this question. This horse has been beaten to death and deep fried. I KNOW from THOUSANDS of dives.
Andyblue
Contributor
Thank you for this usefull post, as a new diver I was reluctent to yet fully trust the transmitter as I have had other divers in my area constantly tell me they are dangerous to use on there own.. I didn't understand as to why any computer manufacturer would let something go on the market for recreational use that would fail as much as these guys made out they did... I am yet to have a failure ( not that I've had many dives). I love using the air tracking capability of the computer and like how it allows for saftey stops and you can set how much air you would like to end with! Also since I dive with my girlfriend I find the buddy air tracking very usefull. I think computers can fail just the same as an analog guage. Computers do have more points to fail however. An analog guage can indeed become out of calibration and show 30 bar when there is nothing, but couldn't the transmitter do the same? Isn't a transmitter the same as a guage but it turns the pressure into a digital signal? If the transmitter was knocked harshly it may read wrong too? The transmitter can also have battery failure? A guage can not. A transmitter can loose signal and a guage can leak. I think they are both as safe as each other and it's a personal choice as to what makes you feel safe and confident. As long as you know what can go wrong with each and factor and failure into a dive plan then there should be no real problems right?
I have the same reference available to me that you have available I don't see you backing up your claim with any stats from a industrial research paper.
Your humble opinion may not matter to the OP looking for facts to base a decision on. Alarms are to increase the safety of divers. If you feel you don't need an extra margin of safety that doesn't reduce your bottom time that's your business but please don't make assumptions for others. I'm sure these features have helped many divers avoid a case of DCS or worse. We each decide on the value of these feature based on our needs and intended use which may vary from one diver to the next.
Instead of giving an opinion on a piece of equipment that you know little about and comparing it to another device you seem to know less about just stick to facts.
Here is a fact for you a B&G SPG is considered to be functional and accurate if it is within 150 psi of actual pressure across it's scale.
On the other hand the electronic pressure transducers of the type used in dive computers must be within 50 psi across it's functional range to be considered functional and accurate.
So even when both devices are functioning properly there is an accuracy difference that favors the electronic device.
BigWilly
Registered
have the atom 2.0 with transmitter, diving it for 2 years, no failures yet. I also use an analog spg for backup and for when I'm in the pool with classes and dont wear the computer.
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