Suunto None manual Altitude diving, Oxygen exposure

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No-decompression time limits (mins) for various depths (ft) for the first dive of a series

Depth

 

 

Personal Mode / Altitude Mode

 

 

(ft)

P0/A0

P0/A1

P0/A2

P1/A0

P1/A1

P1/A2

P2/A0

P2/A1

P2/A2

 

120

10

9

8

9

8

6

8

6

5

130

9

7

6

7

6

5

6

5

4

140

7

6

5

6

5

4

5

4

4

150

6

5

4

5

4

4

4

4

3

10.2.3. Altitude diving

The atmospheric pressure is lower at high altitudes than at sea level. After traveling to a higher altitude, you will have additional nitrogen in your body, compared to the equilibrium situation at the original altitude. This "additional" nitrogen is released gradually over time and equilibrium is restored. It is recommended that you acclimatize to a new altitude by waiting at least three hours before making a dive.

Before high-altitude diving, the instrument must be set to the Altitude Adjustment mode to adjust the calculations for the new altitude. The maximum partial pressures of nitrogen allowed by the mathematical model of the dive computer are reduced according to the lower ambient pressure.

As a result, the allowed no-decompression-stop limits are considerably reduced.

10.3. Oxygen exposure

The oxygen exposure calculations are based on currently accepted exposure time limit tables and principles. In addition to this, the dive computer uses several methods to conservatively estimate the oxygen exposure. For example:

•the displayed oxygen exposure calculations are raised to the next higher percentage value

•for recreational scuba diving, the recommended upper limit of 1.4 bar PO2 is used as a default

•the CNS % limits up to 1.6 bar are based on 1991 NOAA Diving Manual limits

•the OTU monitoring is based on the long-term daily tolerance level and the recovery rate is reduced

Oxygen related information displayed by the dive computer is also designed to ensure that all warnings and displays occur at the appropriate phases of a dive. For example, the following information will be shown before and during a dive when the computer is set in NITROX mode:

•the selected O2% on the alternative display

•OLF% alternative display for either CNS% or OTU% (whichever is larger)

•audible alarms are given and the OLF value starts to blink when the 80% and 100% limits are exceeded

•audible alarms are given and the actual PO2 value blinks when it exceeds the preset limit

•in dive planning, the maximum depth according to the O2% and maximum PO2 selected

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Contents COBRA3 Time Tank pressure Before Diving Intellectual Property Welcome to the World of Suunto Diving Instruments Serious injury or death Before DIVING. Make sure that you fully understand the useNot for Professional USE! Suunto dive computers are That tend to increase the risk of decompression illness DCIDives That Require Decompression Stops are not Mode even during the no-fly time Nitrox mode, as well as from AIR or Nitrox mode to GaugeBatteries. Recycle or dispose of used batteries properly Before the instrument has counted down the no-fly timeSymbol Button Press Main functions Button symbols and functionsSuunto AT a Glance Navigating in the menusDown Setting the alarm Time mode settingsSetting the time Setting the dateSetting the backlight Setting the unitsSetting the tones AC water contactsDisplays by pressing the UP/DOWN buttons Learning how to use your compassCompass display Locking a bearingCompass settings Symbol ExplanationCalibration Time-out DeclinationSuunto RGBM/Deep Stop Algorithm Before DivingEmergency ascents Dive computer limitationsAlarm type Audible and visual alarmsPreset alarm types Alarm type NitroxAlarm is activated Alarm type Alarm reasonError conditions Omitted decompressionDive mode settings Connecting Suunto Cobra3 to a regulatorSetting the depth alarm Setting the dive-time alarmSetting the personal/altitude adjustments Setting the nitrox valuesBottom time, for example Are stored until changedSetting the Safety Stops/Deep Stops Setting the sample rateSetting the Rgbm values Setting the tank pressure alarmDive mode activation Accessing Dive modeActivation and pre-checks Alt. adjustment value Altitude range Battery power indicationDiving at altitude How the Altitude value is setPersonal Condition Desired tables Adjustment Value Personal adjustmentsRgbm setting Desired Tables Effect Recommended Safety Stops Safety StopsMandatory Safety Stops Deep stops Diving Diving in AIR mode DIVEairOrder to perform the necessary dive pre-checks Basic dive dataTank pressure data BookmarkLow Air Pressure Warnings Ascent rate indicatorDecompression dives Display below the floor Ceiling, ceiling zone, floor and decompression rangeDisplay at the ceiling zone Display above the floorDisplay above the ceiling Before diving in Nitrox mode Diving in Nitrox mode DIVEnitroxDefault nitrox settings Oxygen displaysOxygen limit fraction OLF Diving in Gauge mode DIVEgaugeGas change and multiple breathing gas mixes There is no ascent rate monitoring in the Gauge mode Gauge mode does not provide decompression informationModes before the no fly time has counted down After Diving Alarms Symbol on displaySurface interval Dive numberingDive Planning mode PLANnodec Plan modeFlying after diving Mode Simulation Mode PLANsimulatorDive numbering shown during dive planning Dive SimulatorDive logbook MEMLogbook Memory modeInstructions Providing that the battery has been replaced according toDive series if the no-fly time has not ended. See .2. Dive Numbering for further informationSuunto Dive Manager SDM Unit and the downloadable Suunto Dive Manager softwarePage Water Contacts and Push Buttons Care and Maintenance of MY Suunto Diving ComputerBattery replacement and strap kits must be used FAQsWarranty Battery kit Battery ReplacementReplacing the battery Required toolsBattery compartment lid, indicating a leak Technical Data Suunto Rgbm adaptive decompression RgbmNo-decompression limits Diver Attention Symbol Advice to Extend Surface IntervalOxygen exposure Altitude divingCopyright Trademark Intellectual PropertyPatent notice User’s responsibility Disclaimers12.2. CE Exclusions and Limitations Warranty PeriodOther important notices Access to Suunto warranty serviceLimitation of Liability Page Disposal of the Device EAD EAN GlossaryNoaa Copyright Customer Service ContactsTWO Year Warranty Suunto Oy 9/2008, 10/2008, 11/2008
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