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Suunto Cobra3 [17/60] Nitrox
![Suunto Cobra3 [17/60] Nitrox](/views2/1013658/page17/bg11.png)
5.4. Nitrox
Diving with nitrox provides you with an opportunity to increase bottom times or reduce the
risk of decompression illness by reducing the nitrogen content in the gas mix.
However, when the gas mix is altered, the oxygen content of the mix is generally increased.
This increase exposes the diver to an oxygen toxicity risk not usually considered in
recreational diving. In order to manage this risk, the dive computer tracks the time and
intensity of the oxygen exposure and provides the diver with information to adjust the dive
plan in order to maintain oxygen exposure within reasonably safe limits.
In addition to the physiological effects of enriched air on the body, there are operational
considerations to be addressed when handling altered breathing mixes. Elevated
concentrations of oxygen present a fire or explosion hazard. Consult the manufacturer of
your equipment to check its compatibility with nitrox.
5.5. Audible and visual alarms
The dive computer has audible and visual alarms that advise when important limits are
approached or that prompt you to acknowledge preset alarms. The table below describes
the different alarms and their meanings.
Table 5.1. Audible and visual alarm types
Alarm reasonAlarm type
Dive computer is activated.Short single beep
Dive computer automatically returns to the TIME mode.
Cylinder pressure reaches 50 bar/725 psi. The cylinder
pressure display will start to blink.
Three beeps with a three
second interval
Cylinder pressure reaches the selected alarm pressure.
Calculated remaining air time reaches zero.
No-decompression dive turns into a decompression stop
dive. An arrow pointing upwards and the blinking ascent
warning ASC TIME will appear.
Three beeps with a three
second interval and activated
backlight
Maximum allowed ascent rate, 10 m per min/33 ft per
min, is exceeded. Ascent rate bar graph blinks and STOP
warning appears.
Continuous beeps and
activated backlight
Decompression ceiling depth is exceeded. An error
warning Er and a downward pointing arrow appear. You
should immediately descend to, or below, the ceiling.
The instrument will otherwise enter a permanent Error
mode within three minutes, indicated by a permanent Er.
You can set alarms for maximum depth, dive time and tank pressure. See also Section 5.8.
DIVE mode settings and Section 4.1. TIME mode settings.
Table 5.2. Preset alarm types
Alarm reasonAlarm type
Preset maximum depth has
been exceeded.
Continuous beep series for 24 seconds
Maximum depth blinks as long as the current depth value
exceeds the preset value.
Preset dive time has been
exceeded.
Continuous beep series for 24 seconds or until any
button is pressed.
Dive time blinks for one minute.
17
Содержание
- Cobra3 1
- User s guide 1
- Table of contents 3
- Welcome to the world of suunto diving instruments 5
- Warnings cautions and notes 6
- Button symbols and functions 9
- Navigating in the menus 9
- Suunto at a glance 9
- Getting started with your suunto cobra3 11
- Setting the alarm 11
- Setting the date 11
- Setting the time 11
- Time mode settings 11
- Ac water contacts 12
- Setting the backlight 12
- Setting the tones 12
- Setting the units 12
- Compass display 13
- Learning how to use your compass 13
- Locking a bearing 13
- Calibration 14
- Compass settings 14
- Declination 15
- Declination you can compensate for the difference between true north and magnetic north by adjusting the compass declination the declination can be found for example from sea charts or topographic maps of the local area 15
- If the calibration fails several times in a row it is possible that you are in an area with sources of magnetism such as large metal objects power lines or electric appliances move to another location and try to calibrate the compass again if the calibration continues to fail contact an authorized suunto service center 15
- Time out 15
- Time out you can set the compass time out to 1 3 or 5 minutes after the set time has passed from the latest button press the dive computer returns to the time or dive mode from the compass mode 15
- You can exit the compass mode also by long pressing the select button 15
- Before diving 16
- Dive computer limitations 16
- Emergency ascents 16
- The suunto rgbm deep stop algorithm 16
- Audible and visual alarms 17
- Nitrox 17
- Air integration 18
- Error conditions 18
- Connecting suunto cobra3 to a regulator 19
- Dive mode settings 19
- Setting the depth alarm 19
- Setting the dive time alarm 19
- Setting the nitrox values 20
- Setting the personal altitude adjustments 20
- Setting the rgbm values 21
- Setting the safety stops deep stops 21
- Setting the sample rate 21
- Setting the tank pressure alarm 21
- Setting the units 21
- Accessing dive mode 22
- Activation and pre checks 22
- Dive mode activation 22
- Battery power indication 23
- Diving at altitude 23
- Personal adjustments 24
- Mandatory safety stops 25
- Recommended safety stops 25
- Safety stops 25
- Deep stops 26
- Basic dive data 27
- Diving 27
- Diving in air mode diveair 27
- Bookmark 28
- Tank pressure data 28
- Ascent rate indicator 29
- Decompression dives 29
- Safety stops 29
- Ceiling ceiling zone floor and decompression range 30
- Display below the floor 30
- Display above the ceiling 31
- Display above the floor 31
- Display at the ceiling zone 31
- Before diving in nitrox mode 32
- Default nitrox settings 32
- Diving in nitrox mode divenitrox 32
- Oxygen displays 32
- Diving in gauge mode divegauge 33
- Gas change and multiple breathing gas mixes 33
- Oxygen limit fraction olf 33
- After diving 35
- Dive numbering 35
- Repetitive dive planning 35
- Surface interval 35
- Dive planning mode plannodec 36
- Flying after diving 36
- Plan mode 36
- Dive numbering shown during dive planning 37
- Dive simulator 37
- Simulation mode plansimulator 37
- Dive logbook memlogbook 38
- Memory mode 38
- Dive history memhistory 39
- Suunto dive manager sdm 40
- Www suuntosports com and suunto diving world at www suunto com diving 40
- Care and maintenance of my suunto diving computer 42
- Battery kit 44
- Battery replacement 44
- Replacing the battery 44
- Required tools 44
- Technical data 46
- Technical specifications 46
- Suunto rgbm adaptive decompression 47
- No decompression limits 48
- Altitude diving 49
- Oxygen exposure 49
- Copyright 50
- Intellectual property 50
- Patent notice 50
- Trademark 50
- Disclaimers 51
- User s responsibility 51
- Suunto limited warranty for suunto diving computers and suunto diving computer accessories 52
- Disposal of the device 55
- Glossary 56
- Copyright 58
- Customer service contacts 58
- Two year warranty 59
- Www suunto com 60
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