Dive Computer Expert Reviews
Saving Your Precious Time And Finding The Best Dive Computer For You
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Oceanic Atom 2 is made as a dive watch computer and can completely satisfy demands not only the serious beginners in diving by allowing the person to grow in diving career, but also can be recommended dive computer for technical divers who will appreciate variety of features that are distinctive in dive instruments, which cover wide range of applications from diving with air to freediving activities.
Air-integrated dive computers have an inestimable advantage over computers without air-integration – it is a number warnings and alarms relative to Air Time Remaining and Tank Pressure. Constant monitoring of those parameters and displaying their current values makes your each diving safer!
Copy this Oceanic Atom 2 Features & Alarms Card for your Reference and Share with your friends and buddies!
Oceanic Atom 2 has 4 control buttons and as it is a high-tech dive instrument, to retrieve information and program it, you need to spend time to learn all of the combinations of those buttons and for how long you will need to press them to get info or adjust the setting you want, not to get frustrated later, especially underwater!
This dive computer has 1 shared bar graph, either for nitrogen tissue loading or oxygen accumulation. Tissue Loading Bar Graph (TLBG) is a default graph, and you may access O2BG (oxygen bar graph) on the alternative display during diving with Nitrox.
During this stage we will set up Oceanic Atom 2. And we will start from its digital watch functions:
Atom 2 has all parameters divided into certain groups, as many other dive computers, and those parameters are FO2, Alarms, and Utilities groups.
Copy this Oceanic Atom 2 Settings Card for your Reference and Share with your friends and buddies!
Oceanic Atom 2: Diving With Air & Nitrox
During diving, whether in Normal Mode (air/nitrox), Gauge, or Freedive, you will get different displays with information according to each mode and for every diving condition.
Copy this Oceanic Atom 2 NO-DECO Card for your Reference and Share with your friends and buddies!
If you are new to the world of dive computers - here is a bit of theory about Dive Time Remaining – what it shows and how it works.
This Oceanic dive computer shows your Dive Time Remaining (DTR) according to No-Decompression Time, O2 accumulation, or Air Time Remaining (ATR), whichever Time is the least amount available.
No-Decompression Time is the maximum time that you are allowed to stay at certain depth before entering into Decompression mode. This mathematical model is based upon absorption of the nitrogen by the tissue compartments and constantly compared with allowable level of nitrogen accumulation for that depth. The value is displayed as No-decompression (NDC) Time Remaining in minutes and graphically on the bar from the top left side of the screen.
Oxygen accumulation Time Remaining (OTR) is shown when Atom is set for Nitrox. It shares the same bar graph as in case of nitrogen absorption and displayed in minutes and graphically.
Air Time Remaining (ATR) is shown according to the current depth and your air consumption. It assures that you have enough air in the cylinder(s) to surface safely and is displayed in minutes and takes to the account the Tank Pressure Reserve when you set values of the End Pressure alarm.
During ascent Oceanic Atom 2 may give you an Ascent warning/alarm (audio and message ‘SLOW’) if your ascent rates is higher than allowable at certain depth.
Upon reaching certain depth dive computer may give you Safety Stop prompt with all attributes, which you set at pre-dive stage - Safety Stop depth and time.
Below is a small representation of what you will get on main and alternative displays, if Oceanic Atom 2 was set for Nitrox and you have a Decompression mode:
During Normal dives (Air or Nitrox) Oceanic Atom 2 lets you access to Switch gases and Buddy Pressure check functions, if you enabled more than one gas mix.
Oceanic Atom 2: Diving In GAUGE Mode
When you set Oceanic Atom 2 in Gauge mode - it would work as a depth gauge and timer only and wouldn’t perform calculations for nitrogen loading and oxygen toxicity levels. It is worth to mention that during this operation following functions like Switching gases and Buddy Pressure Check are not available. Atom 2 works only with Transmitter 1 in Gauge mode.
Display in Gauge mode consists of main and alternative and below are the values you will get while diving in Gauge mode:
Oceanic Atom 2: FREEdiving
When Oceanic Atom 2 set for FREEdive mode it will operate as a depth gauge and performs nitrogen loading calculation based upon default settings of FO2 of Air and the amount of nitrogen you’ve got from the previous dives whether in Air or Nitrox modes.
Freedive mode has its specific and certain adjustable parameters, like:
Displays (main and alternative) show you the following values:
You may access Countdown Timer (CDT) status display and during freedive have all appropriate alarms that you set up before.
And besides that you may have TLBG alarm, and at the certain conditions you may even enter into the Decompression mode. This happens if nitrogen level increases to the Warning level, which means that all 5 segments on the bar graph of Oceanic Atom 2 are filled up and flashing.
This is considered to be a Permanent Violation, you must ascend and do not dive for the next 24 hours.
After we got out of water and transition period finished, we may access following functions:
Dive Planner is a very usefull function for planning repetitive dives. It shows you No-Decompression times and allowable depths according to nitrogen and oxygen accumulation from previous dive. Range is 9 - 57 meters in 3 meters increments.
Logbook is quite extensive and contain 2 pages of dive data for each dive.
Battery removal doesn’t affect either Logbook data or History data.
Oceanic Atom 2: What Divers Say
Well, guys, we have read all Pros and Cons. Sometimes you may see that performance is different from unit to unit.
From the guys from local scuba dive shop I found out that people who bought Oceanic Atom 2 were quite happy with the performance of this particular dive equipment, and not many returns at all were logged into the system.
So, Oceanic Atom 2 is recommended dive computer for advanced recreational and technical divers who have had already experience of using these devices, because it is high-tech instrument and requires quite a bit of knowledge and patience, especially with hard-to-follow manuals since the very beginning!
But even if you are the beginner and you have desire and you are persistent person – there is all possible for you – learn how to use this dive computer properly and you will have reliable underwater friend for many years to come. Oceanic Atom 2 will definitely allow you to grow as a diver!