Certification
Certification
TDI SF2 eCCR 45m Helitrox Decompression Procedures teaches helium-blended diluent and staged decompression on the rEvo SF2 unit to forty-five metres. You already hold CCR air diluent decompression certification on the SF2. This module adds helitrox gas planning, hypoxic diluent awareness and the discipline of analysing, labeling and diving mixed gases on a closed loop.
Helitrox on a rebreather is not magic depth for free. You manage partial pressures, bailout matching and cell behaviour while the loop hisses quietly at a deco stop. TDI limits and centre policies define usable blends. Your instructor drills failures until responses are dull, which is the point.
Most courses run over several days with classroom gas theory and open water helitrox deco dives on the SF2. Arrive with logged hours on the unit after SF2 40m Air Diluent Decompression Procedures, not immediately after passing air diluent deco on a Friday and starting helitrox on Monday.
TDI SF2 45m Helitrox is assessed through practical helitrox decompression dives and skills on the unit. Your instructor signs off when TDI performance requirements are met.
Quick answers about this qualification. For anything else, use live chat or browse bookable activities below.
Find activitiesIt is the TDI helitrox staged decompression qualification on the rEvo SF2 unit to forty-five metres. You dive helium-blended diluent with mandatory deco stops after completing CCR air diluent deco on the SF2.
Certification is unit-specific and blend-limited to TDI helitrox rules taught on the course.
SF2 40m Air Diluent Decompression Procedures or equivalent CCR air diluent deco on the same unit, age eighteen plus, and logged SF2 time your instructor accepts.
Leave a comment when you book with your deco card date and hours. Jumping straight from air diluent to helitrox without consolidation is a common deferral reason.
Helitrox reduces narcosis and gas density at depth compared with air diluent, improving comfort and work of breathing on deeper deco dives within TDI limits.
It adds gas analysis, labeling and bailout matching complexity. The trade is worth it when you respect the checklist.
Gas theory and planning are taught in classroom and briefings. Assessment is primarily practical helitrox decompression dives on the SF2.
Your instructor clears weak planning topics before you breathe helitrox on a deco profile.
Helitrox diluent within TDI helitrox limits plus appropriate bailout and decompression gases as your centre teaches. Exact blends depend on site and instructor policy.
Never dive analysed gas you did not personally check. That habit starts on this course.
Typically several days with multiple helitrox deco dives. Gas logistics and student pace may extend beyond minimum requirements.
Remote sites with limited blend availability need flexible schedules.
SF2 60m Mixed Gas Diver for deeper mixed-gas CCR after fifty CCR hours on unit and further logged experience.
Build repetitive helitrox deco dives before chasing maximum depth every weekend.
Open circuit helitrox experience helps with planning but does not replace SF2 CCR helitrox training. Unit-specific skills and loop management still require this module.
Leave a comment when you book with your current cards. Instructors map crossover eligibility individually.
More task loading than air diluent deco. You juggle cells, run schedules, gas switches and bailout options simultaneously at depth.
Arrive current on SF2 maintenance and recent deco hours. Rust at a forty-five metre stop is expensive.
Exposure protection for long deco, backup mask, stage rigging compatible with SF2 and personal tools your centre approves. Stages and mixes usually arranged locally.
Confirm cylinder sizes and stage band compatibility before travel.
adventuro lists TDI centres with SF2 units and helitrox gas supply offering this module. Compare depth access, gas fees and minimum logged CCR hours.
Book when your air diluent deco on the SF2 feels automatic, not when you merely qualify on paper.
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