Suunto HelO2 is an advanced mixed-gas dive computer for divers who use multiple gases such as trimix, nitrox, and oxygen to go deeper for longer. Featuring the Suunto Technical RGBM algorithm and a multi-gas dive planner, the device is designed to make your whole technical diving experience simpler, faster, and more flexible.

• Flexible decompression

  • Rated to 120 m/393 ft and with full mixed-gas capability, Suunto HelO2 incorporates the Suunto Technical RGBM algorithm. The algorithm extends decompression flexibility into the world of technical diving by allowing continuous decompression.
    The algorithm introduces helium tissue groups into the decompression model to enable trimix diving, as well as diving on air and nitrox. It allows you to program eight gases as primary or secondary gases, and enables an oxygen content of 8% to 100%, and a helium content of 0% to 92%. In addition to increasing decompression flexibility, the algorithm also reduces your decompression task load by removing the need to constantly monitor a slate and watch.

   

• Simplified technical dive planning

  • Suunto Multi-gas Dive Planner – part of the updated Suunto Dive Manager PC software – is designed to simplify the planning of dive profiles, gases, and back-up plans. The easy-to-use graphical planner allows you to try variations of depth, time, gases, and partial pressures without having to continually recalculate. The planner calculates all changes instantly and presents the results on an easy-to-read graph.
    When ready, you can simply transfer information relating to planned gases, and other dive-critical data, from the PC to your dive computer with the included USB cable – removing the need to copy all the calculations onto a slate. The dive planner also gives you gas mixing instructions for your planned dive, which you can print out and take to a dive shop if you're not mixing yourself.

   

• Accurate dive series planning

  • The Suunto Multi-gas Dive Planner enables you to plan dive series based on your actual dive profiles – not planned dive profiles – making the plans for later dives in the series more accurate. The planner also allows you to compare the planned dive and the actual dive by supporting the analysis of up to eight gases. This also helps you pinpoint elements of both your planning and diving that may need some fine-tuning.

   

Suunto Transmitter HelO2: Suunto Vytec DS is available with the optional wireless pressure transmitter. During the dive you will receive current cylinder pressure reading with an estimated remaining air time based on current gas consumption. There are two low pressure warnings, one factory set and the other user adjustable. The transmitter can be used in either of the three dive modes, Air, Nitrox or Gauge, it is also compatible with pressures up to 300 bar (4000 psi) and has a user replaceable battery.
By using the Suunto D9s optional wireless transmitter, the diver can also monitor tank pressure and air consumption data from the wrist. The remaining tank pressure is displayed both numerically and graphically, and an estimation of the remaining air time is given throughout the dive. This allows the diver to monitor the remaining air supply at the same time he or she monitors depth and time. Real time air-consumption is also stored in the memory.

Features

• Deeper, longer dives with support for multiple gases such as trimix, nitrox, and oxygen
• Simplified planning of dive profiles, gases, and back-up plans with the graphical Suunto multi-gas dive planner
• Continuous decompression through the Suunto Technical RGBM algorithm
• Rated to 120 m/393 ft and with full mixed-gas capability

Specifications

• Diving
  • Air Integration Yes
  • Log book memory Yes
  • Personal adjustement Yes
  • Safety stop Yes
  • Temperature display Yes
  • Wireless air integration Yes
  • Deep stops Yes
  • Dive time is seconds In Gauge mode
  • Operation mode Nitrox Yes
  • Profile sampling rates in seconds 10,20,30,60s
  • Dive planner Yes
  • Operation mode Gauge Yes
  • Altitude adjustment Yes
  • Consumed bottom time graph
  • Ascent rate monitor/alarm Yes
  • Ascent time display Up to 199 min
  • Audible alarm Yes
  • Full decompression data Yes
  • Lifetime history memory Yes
  • Maximum depth alarm Yes
  • Maximum depth display 150 m (492 ft)
  • Operation mode Air Yes
  • Suunto technical RGBM model Yes
• Nitrox
  • CNS% + OTU calculation (OLF) Yes
  • Gas switching during dive Yes
  • Max PO2 adjustment 0.5-1.6
  • O2 % setting Up to 8 Gasses containing 8-99%
• Other
  • Weight 68 g
  • Operating temperature 0°C - +40°C/32°F - +104°F
  • Storage temperature -20°C - +50°C/-4°F - +122°F
  • Selectable metric/imperial units Yes
  • Menu-based user interface Yes
  • Dot matrix display Yes
  • Backlight type Electro-luminescent Display
  • Adjustable backlight duration Yes
  • Dot-matrix display Yes
  • Water resistance 150m / 492ft
• PC Software
  • Software name Suunto Dive Manager and Multi-gas Dive Planner
• Power
  • Battery power indicator Yes
  • Low battery warning Yes
  • User replaceable battery Yes
• Watch
  • 12/24h Yes
  • Calendar clock Yes
• TRIMIX
  • 8 gas mixes Yes
  • Helium Up to 92%
  • Oxygen 8-99%