![Suunto Cobra [30/78] Diving in nitrox mode](/img/pdf.png)
Suunto Cobra [30/78] Diving in nitrox mode
![Suunto Cobra [30/78] Diving in nitrox mode](/views2/1013676/page30/bg1e.png)
28
TIME
DIVE
m
OLF
bar
MAX
O2%
NO DEC TIME
PO2
O2%
OLF
m
Fig. 3.21. Nitrox display. Maxi-
mum depth based on set O
2
%
(21%) and PO
2
(1.4 bar) is 54.1
m [177 ft].
Fig. 3.22. Diving in Nitrox
mode. The O
2
% is set to 32%.
3.4. DIVING IN NITROX MODE
3.4.1. BEFORE DIVING
This dive computer can be set for diving with standard air
only (Air mode) or it can be set for diving with Enriched
Air Nitrox (EANx) (Nitrox mode).
If set to the Nitrox mode, the correct oxygen percentage
of the gas in your cylinder must always be entered into
the computer to ensure correct nitrogen and oxygen
calculations. The dive computer adjusts its mathematical
nitrogen and oxygen calculation models according to
the entered O
2
% and PO
2
values. Calculations based
on Nitrox result in longer no-decompression times and
shallower maximum depths. When the dive computer
is set in Nitrox mode then the Dive Planning and Dive
Simulation modes both calculate with the O
2
% and PO
2
values that are currently in the computer.
DEFAULT NITROX SETTINGS
In the Nitrox mode, the default setting is for standard
air (21% O
2
). It remains in this setting until the O
2
%
is adjusted to any other percentage of oxygen (22%
- 50%).
If unused, the computer will retain the manually entered
value for the selected oxygen percentage for about two
hours, after which it will revert to the default setting of
21% O
2
.
The default setting for maximum oxygen partial pressure
is 1.4 bar, however you are able to set it in the range of
1.2 - 1.6 bar.
Содержание
- Asc time 2
- Bar psi 2
- Ceiling 2
- Max avgpo2 2
- Options 2
- Quick reference guide 2
- S l o w 2
- Copyright trademark and patent notice 3
- Definition of warnings cautions and notes 3
- En 250 respiratory equipment open circuit self contained compressed air diving apparatus requirements testing marking 3
- Fioh laajaniityntie 1 fin 01620 vantaa finland notifi ed body no 430 has ec type examined this type of personal protective equipment 3
- Iso 9001 3
- Pren 13319 3
- Pren 13319 diving accessories depth gauges and combined depth and time measuring devices functional and safety requirements test methods is a european diving depth gauge standard draft the cobra is designed to comply with this draft standard 3
- The ce mark is used to mark conformity with the european union emc directive 89 336 eec the suunto dive instruments fulfi ll all the required eu directives 3
- The tank pressure gauge and the parts of this product used in measuring the tank pressure meet the requirements set in the section of the european standard en 250 that concern tank pressure measurements the instruments must be serviced by an authorized dealer every second year or after 200 dives whichever comes fi rst 3
- Warning 4
- Warnings 4
- Warning 5
- Warning 6
- Warning 7
- Diving with the cobra 8
- Getting acquainted 8
- Introduction 8
- Table of contents 8
- Warnings 8
- Care and maintenance 9
- Glossary 9
- Menu based modes 9
- Technical description 9
- Warranty 9
- Choice of operating modes and set up options 10
- Continuous decompression with suunto rgbm 10
- Introduction 10
- Dive computer limitations 11
- Emergency ascents 11
- Safety precautions 11
- Nitrox 12
- Connecting the cobra to a regulator 13
- Functions 13
- Getting acquainted 13
- Push buttons 14
- Water contacts 15
- Activation and prechecks 16
- Before diving 16
- Diving with the cobra 16
- Battery power indicator and low battery warning 17
- Table 3 battery power indicator 17
- Dive planning plan 18
- Dive numbering shown during dive planning 19
- User definable functions and alarms 19
- Mandatory safety stop 20
- Recommended safety stop 20
- Safety stops 20
- Basic dive data 22
- Diving in air mode 22
- Bookmark 23
- Cylinder pressure data 23
- Air consumption rate with a high consumption rate the limit will be close to 50 bar 725 psi and with a low rate close to 35 bar 500 psi 24
- Low air pressure warnings 24
- Note a change of temperature will affect the cylinder pressure and consequently the air time calculation 24
- Note filling your bc will affect the air time calculation due to the temporary increase in air consumption 24
- The dive computer will warn you with three audible double beeps and a blinking pressure display when the cylinder pressure reaches 50 bar 725 psi fig 3 2 the next three double beeps are heard when the cylinder pressure reaches 35 bar 500 psi and when the remaining air time reaches zero 24
- Ascent rate indicator 25
- Consumed bottom time cbt 25
- Table 3 ascent rate indicator 25
- Decompression dives 26
- Warning 26
- Ceiling ceiling zone floor and decompression range 27
- Warning 27
- Display below the floor 28
- Warning 28
- Display above the ceiling 29
- Display above the floor 29
- Display at the ceiling zone 29
- Before diving 30
- Default nitrox settings 30
- Diving in nitrox mode 30
- Oxygen displays 31
- Oxygen limit fraction olf 32
- Diving in gauge mode 33
- At the surface 34
- Surface interval 34
- Dive numbering 35
- Flying after diving 36
- Audible and visual alarms 37
- Oxygen alarms in nitrox mode 38
- Altitude adjustment 39
- High altitude dives and personal adjustment 39
- Table 3 altitude adjustment ranges 39
- Warning 39
- Personal adjustment 40
- Table 3 personal adjustment ranges 40
- Error conditions 41
- Omitted decompression 41
- Menu based modes 42
- The use of the menu based functions 42
- By pressing the smart button for more than 1 second any menu based function or submode can be quit and the dive computer will return directly to the dive mode 43
- Exit quit 43
- Memories and data transfer 1 memory 43
- Note the menu based modes cannot be activated until 5 minutes after the dive 43
- Set modes 3 set 43
- Simulation mode 2 simul 43
- The list of the menu based modes 43
- Logbook and dive profile memory 1 logbook 44
- Memories and data transfer 1 memory 44
- Dive profile memory prof 46
- Data transfer and pc interface 3 tr pc 47
- Dive history memory 2 history 47
- Dive simulator 1 simdive 49
- Simulation mode 2 simul 49
- Dive planning simulator 2 simplan 50
- Altitude adjustment and personal adjustment settings 1 adj mode 51
- Dive parameter settings 1 set dive 51
- Set modes 3 set 51
- Dive time alarm setting 2 d alarm 52
- Maximum depth alarm setting 3 max dpth 52
- Nitrox oxygen settings 4 nitrox 52
- Adjusting daily alarm 3 t alarm 53
- Adjusting date 2 adj date 53
- Adjusting time 1 adj time 53
- Setting time 2 set time 53
- Backlight setting 1 light 54
- Dive computer model setting 3 model air nitrox gauge 54
- Dive computer units setting 2 units 54
- Setting preferences 3 set pref 54
- Care and maintenance 55
- Depth sensor 55
- Important information 55
- Water contacts and push buttons 55
- Care of your dive computer 56
- Battery replacement 57
- Caution 57
- Maintenance 57
- Water resistance inspection 57
- Battery kit 58
- Battery replacement 58
- Caution 58
- Tools required 58
- All display segments work the low battery warning is off the buzzer beeps and backlight works all the settings are correct reset current time date and other settings if necessary 17 reassemble computer into the console the instrument is now ready for use 60
- Caution 60
- Check after the fi rst dives for possible moisture under the transparent battery compartment lid indicating a leak 60
- The dive computer should now activate it s timekeeping mode and show time 18 00 6 00 pm and date sa 01 01 activate the instrument check that 60
- Compass attachment 61
- Display shield replacement 61
- No decompression limits 62
- Operating principles 62
- Table 6 no decompression time limits min for various depths ft for the first dive of a series 62
- Table 6 no decompression time limits min for various depths m for the first dive of a series 62
- Technical description 62
- The no decompression limits displayed by the dive computer for the fi rst dive to a single depth see table 6 and table 6 are slightly more conservative than those permitted by the u s navy tables 62
- Altitude diving 63
- Surface intervals 63
- Reduced gradient bubble model suunto rgbm 64
- Suunto rgbm adaptive decompression 64
- Diver attention symbol advice to extend surface interval 65
- Oxygen exposure 65
- Technical specification 66
- Warranty 69
- Glossary 70
- Disposal of the device 74
- Modes and operations 75
- Www suunto com 78
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