O2ptima
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O2ptimaO2ptima CM -
O2ptimaExtendAir CO2 Absorbent Cartridge -
O2ptimaO2ptima CM Skid Plate -
O2ptimaInline Valve -
O2ptimaOxygen Sensor -
O2ptimaChop Lock -
O2ptimaBungee Slider -
O2ptimaO2ptima CM Scooter Ring
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Whole Lotta ChO2ptima Going On
Launched in early 2020, just as the pandemic was getting started, Dive Rite’s innovative chest-mounted O2Ptima, aka the ChO2ptima, is generating significant buzz among instructors and users as the hot new rebreather on the market...
Oxygen Toxicity and CCR/Rebreather Diving
Oxygen toxicity is a consequence of the biochemical damage that occurs in cells as a result of oxygen free radicals. Whenever oxygen is present, oxygen free radicals are formed. The number of radicals is directly related to the partial pressure of oxygen (pO2). Our cells have several mechanisms to inactivate oxygen radicals and to repair the damage that they cause. These defenses are able to keep ahead of the damage at normal partial pressures of oxygen but they fall behind when the pO2 exceeds about 0.45 atmospheres (ata)...
SuperFabric®
Dive Rite uses a heavy weight 1200 denier nylon base material with a pattern of armored plates that maximizes abrasion resistance. The SuperFabric® combination we use has proven to be 4 times more abrasion resistant than Kevlar...
DiveCAN and AK 4-pin Cable Maintenance Guidelines
Cables in a rebreather system are vulnerable to damage due to their exposed nature, making them susceptible to abrasion, impacts, and environmental wear. This guide provides essential care and maintenance tips for two types of cables used in Shearwater products: DiveCAN cables (digital 5-pin) and AK 4-pin cables (analog 4-pin)...
FAQ
Where should the unit sit on the chest?
Does the unit require a crossover for already certified O2ptima CM divers?
Can a 1st Generation O2ptima CM be upgraded?
How long do the consumables last?
The O2ptima was designed to use the ExtendAir Cartridge for convenience but will also use 812 granular absorbents. Duration is based on water temperature and CO2 production rate. The testing is done using a high flow rate of 1.35 liters of CO2 per minute.
Water temperature of 50 degrees at 1.35 flow rate is 3 hours and longer with lower flow rates.
Water temperature of 75 degrees at 1.35 flow rate is 4 hours and longer with lower flow rates.
Using the recommended 9 volt Lithium battery, the solenoid electronics will average 40 hours under normal use.
What type of training is required to use the O2ptima CM?
All rebreathers, including the O2ptima CM, require specific training before they can be used. You must be certified on the specific model to operate it safely. See Dive Rite’s O2ptima Instructor Listing to find an instructor.
What are the routine maintenance requirements?
Routine maintenance for the O2ptima CM involves replacing the galvanic oxygen sensors annually and a full service every two years or 100 dives.
Can I switch between granular and cartridge CO2 absorbents?
Yes, the O2ptima CM is designed to accommodate both Micropore ExtendAir cartridges and loose granular absorbents. This versatility allows divers to choose the option that best suits their diving conditions and preferences.
