EN HelO2 USER’S GUIDE
Tank Pressure Bar Graph Gas Mix Selection O2% | He% (Mixed Gas Mode) (Mixed Gas Mode) (Mixed Gas Mode)
1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS ................ 5 1.1. Using HelO2 with Dive Manager and Dive Planner ................................. 5 2. WARNINGS, CAUTIONS, AND NOTES ................................................... 6 3. SUUNTO HelO2 AT A GLANCE ............................................................ 9 3.1. Navigating in the menus ............................................................... 9 3.2. Button symbols and functions .............................................
6.1.5. Decompression dives ........................................................... 6.2. Diving in MIXED GAS mode ......................................................... 6.2.1. Before diving in MIXED GAS mode ............................................ 6.2.2. Oxygen and helium displays .................................................... 6.2.3. Oxygen limit fraction (OLF) ..................................................... 6.2.4. Gas change and multiple breathing gas mixes ..........................
1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS Suunto HelO2 was designed to help you get the most out of your diving. With easy-to-use PC dive planner and gas switching, Suunto HelO2 simplifies your diving experience because all the information you need relating to depth, time, tank pressure, and decompression status is available on one easy-to-read screen.
2. WARNINGS, CAUTIONS, AND NOTES Throughout this manual, important safety icons are displayed.
WARNING DIVES THAT REQUIRE DECOMPRESSION STOPS ARE NOT RECOMMENDED. YOU SHOULD ASCEND AND BEGIN DECOMPRESSION IMMEDIATELY WHEN THE DIVE COMPUTER SHOWS YOU THAT A DECOMPRESSION STOP IS REQUIRED! Note the blinking ASC TIME symbol and the upward pointing arrow. WARNING USE BACK-UP INSTRUMENTS! Make sure that you use back-up instrumentation, including a depth gauge, submersible pressure gauge, timer or watch, and have access to decompression tables whenever diving with the dive computer.
WARNING SELECT THE CORRECT ALTITUDE ADJUSTMENT SETTING! When diving at altitudes greater than 300 m/1,000 ft the Altitude Adjustment feature must be correctly selected in order for the computer to calculate the decompression status. The dive computer is not intended for use at altitudes greater than 3,000 m/10,000 ft. Failure to select the correct Altitude Adjustment setting, or diving above the maximum altitude limit will result in erroneous dive and planning data.
3. SUUNTO HELO2 AT A GLANCE 3.1. Navigating in the menus Suunto HelO2 has four main operating modes: 1. TIME mode 2. DIVE mode (MIXED GAS, GAUGE) 3. PLAN mode (NODEC) 4. MEMORY mode (HISTORY, LOGBOOK) To toggle between the main modes, press the MODE button. To select a submode in DIVE and MEMORY modes, press the UP/DOWN buttons. MEMORY PLAN Gases Depth Alarm Dive Time Alarm Personal/Altitude Sample rate Tank Pressure Tank Pressure Alarm Units Mixed gas Gauge SUB-MODE NoDec SUB-MODES Logbook History 3.
Symbol 10 Button Press Main functions DOWN Long Enter Setting mode
4. GETTING STARTED WITH YOUR SUUNTO HELO2 To get the most out of your Suunto HelO2, take some time to personalize it and really make it YOUR computer. Set the correct time and date, tones, unit and backlight settings. Suunto HelO2 is a very user-friendly dive computer, and you will quickly become familiar with its functions. Make absolutely sure that you know your computer and have it set up as you want it BEFORE getting into the water. 4.1.
ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON. 4.1.4. Setting the backlight Use the BACKLIGHT SETTING mode to turn the backlight on or off and to define how long it stays on for (5, 10, 20, 30, or 60 seconds). When the backlight is turned off, it does not illuminate when an alarm sounds. ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON. 4.1.5. Setting the tones The TONE SETTING mode allows you to activate or deactivate the tones. ADJUST WITH UP AND DOWN BUTTONS.
5. BEFORE DIVING Do not attempt to use the dive computer without reading this user's manual in its entirety, including all the warnings. Make sure that you fully understand the use, displays, and limitations of the instrument. If you have any questions about the manual or the Suunto HelO2, please contact your Suunto representative before diving with the dive computer.
YOU ARE ADVISED TO MAKE A DEEPSTOP AT 18 M. THE SECOND INDICATOR SHOWS THAT YOU HAVE 110 SECONDS LEFT OF YOUR DEEPSTOP. In order to optimize the response to different increased risk situations, an additional category of stop, referred to as a Mandatory Safety Stop, has been introduced. The combination of stop types depends on the user settings and the specific dive situation. To get the most from the RGBM safety benefits, refer to Section 10.2. RGBM. 5.3.
5.6. 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 indication Alarm reason Three beeps with a one second interval for PO2 value is greater than the adjusted value. the maximum of three minutes. The PO2 Current depth is too deep for the gas in use. value blinks.
Alarm indication Alarm reason Three beeps with a one second interval for The selected depth (3 - 120 m / 10 - 394 ft) 24 seconds. Maximum depth blinks. is exceeded. The fixed maximum depth (120 m / 394 ft) is exceeded. Three beeps with a one second interval for The selected dive time (1 - 999 min) is ex24 seconds. Dive time blinks. ceeded. NOTE When the backlight is turned OFF, it does not illuminate when an alarm is activated.
Omitted decompression The Error mode results from omitted decompression, i.e. when you stay above the ceiling for more than three minutes. During this three-minute period the Er warning is shown and the audible alarm beeps. After this, the dive computer will enter a permanent Error mode. The instrument will continue to function normally if you descend below the ceiling within this three-minute period. Once in the permanent Error mode, only the Er warning is shown in the center window.
2. 3. 4. Ensure that the Suunto HelO2 is turned on, and that the wireless integration is enabled in the Suunto HelO2 settings (HP set ON, see Section 5.9.8. Setting the HP code). The HelO2 should display “cd:--” in the lower left corner of the alternative display. Slowly open the cylinder valve fully and pressurize the regulator. The transmitter starts transmitting when the pressure exceeds 15 bar/218 psi. Take the Suunto HelO2 wrist unit close to the transmitter.
A B C D E 5.9. MIXED GAS DIVE mode settings Suunto HelO2 has several user-definable functions, as well as depth and time-related alarms that you can set according to your personal preferences. The DIVE mode settings are dependent on the dive submode chosen (MIXED GAS, GAUGE), so that, for example, gas mix settings are only available in the MIXED GAS submode. With Suunto HelO2, most of the settings are planned with the Suunto Dive Planner and downloaded to the dive computer.
The ASC time is calculated based on the assumption that you start the ascent profile immediately and all the PRIMARY gases are changed as soon as their maximum operating depth allows it. That is, using the gases that are set as primary, the most optimal ascent schedule for the moment is calculated.
ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON. 5.9.5. Setting the sample rate The sample rate controls how often the depth, time, tank pressure, and water temperature is stored in the memory. You can set the dive profile sample rate to 10, 20, 30, or 60 seconds. The factory default setting is 20 seconds. ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON. 5.9.6. Setting the tank pressure alarm The tank pressure alarm can be set "ON" or "OFF" and in the range of 10 - 200 bar.
ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON. SELECT TANK PRESSURE ON. 5.9.9. Setting the units Use Unit Settings to choose between metric (meters/celsius/bar) and imperial (feet/fahrenheit/psi) units. ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON. 5.10. Activation and pre-checks This section describes how to activate the DIVE mode and explains the pre-checks that it is highly recommended you perform before you get into the water. 5.10.1.
• the altitude and personal adjustment settings are correct • the instrument displays correct units of measurement (Metric/Imperial) • the instrument displays the correct temperature and depth (0.
Alt. adjustment value Altitude range A2 1500 - 3000 m / 5000 - 10 000 ft NOTE Section 5.9.4. Setting the personal/altitude adjustments describes how the Altitude value is set. WARNING Traveling to a higher elevation can temporarily cause a change in the equilibrium of dissolved nitrogen in the body. It is recommended that you acclimatize to the new altitude by waiting at least three hours before diving. 5.10.5.
Personal adjust- Condition ment value Desired tables P1 Some risk factors or conditions exist Progressively more conservative P2 Several risk factors or conditions exist WARNING Personal adjustment setting P0 – P-2 causes a high risk of DCI, or other personal injury, and death. 5.11. Safety Stops Safety Stops are widely considered good diving practice for recreational and technical diving, and are an integral part of most dive tables.
WHEN CEILING AND STOP ARE DISPLAYED, MAKE A ONE MINUTE MANDATORY SAFETY STOP IN THE DEPTH ZONE BETWEEN 6 M AND 3 M. You must not ascend shallower than 3 m/10 ft with the Mandatory Safety Stop warning on. If you ascend above the Mandatory Safety Stop ceiling, a downward pointing arrow will appear and a continuous beeping starts. You should immediately descend to, or below, the Mandatory Safety Stop ceiling depth.
6. DIVING This section contains instructions on how to operate the dive computer and interpret its displays. You’ll find that this dive computer is easy to use and read. Each display shows only the data relevant to that specific diving mode. 6.1. Diving-related information In this section, we look at how to make the most of the dive computer when diving with gas mixes. To activate MIXED GAS DIVE mode, please see Section 5.10.1. Accessing DIVE mode.
6.1.2. Bookmark It is possible to record bookmarks in the profile memory during a dive. These bookmarks are displayed when scrolling the profile memory on the display. The bookmarks will also be shown as annotations in the downloadable Suunto Dive Manager PC software. The bookmark logs the depth, time, water temperature, and tank pressure when available. To make a bookmark in the profile memory during a dive, press the SELECT button. A brief confirmation will be given.
The ascent time (ASC TIME) is the minimum amount of time needed to reach the surface in a decompression dive. It includes: • the time needed at the deep stop • the time needed to ascend to the ceiling at an ascent rate of 10 m/33 ft per minute.
WARNING NEVER ASCEND ABOVE THE CEILING! You must not ascend above the ceiling during your decompression. In order to avoid doing so by accident, you should stay somewhat below the ceiling. Display below the floor The blinking ASC TIME and an upward pointing arrow indicate that you are below the floor. The ceiling depth is shown on the left side, and the minimum total ascent time on the right side, of the center window. Below is an example of a decompression dive above Deep Stops, below the floor.
DECOMPRESSION DIVE, ABOVE CEILING. NOTE DOWNWARD POINTING ARROW, ER WARNING AND ALARM. YOU SHOULD IMMEDIATLY (WITHIN 3 MINUTES) DESCEND TO OR BELOW CEILING. In addition, an Error warning (Er) reminds you that you have only three minutes to correct the situation. You must immediately descend to, or below, the ceiling. If you continue to violate the decompression, the dive computer will go into a permanent Error Mode. In this mode, the instrument can only be used as a depth gauge and timer.
MIXED GAS DIVE MODE ACTIVATION, MAXIMUM OPERATIONAL DEPTH BASED ON SET O2% (14%), HE2% (32%), AND PO2 (1.4) IS 83.3 M.
CHANGING GAS MIX. SCROLL THROUGH ENABLED MIXES BY PRESSING THE UP OR DOWN BUTTONS. SELECT NEW MIX BY PRESSING THE SELECT BUTTON. NOTE Mix number, O2%, He% and PO2 for the mixes are shown when scrolling. If the set PO2 limit is exceeded , it will be shown with the PO2 value blinking. The dive computer does not allow you to change to a gas whose set PO2 is exceeded. In such a case, the mix is shown but cannot be selected. If the PO2 is less than 0.18 bar, the dive computer gives an alarm.
7. AFTER DIVING Once back at the surface, Suunto HelO2 continues to provide post-dive safety information and alarms. Calculations to enable repetitive dive planning also help to maximize diver safety. Table 7.1. Alarms Symbol on display Indication Diver Attention Symbol - Extend Surface Interval Violated Decompression Ceiling or Too Long Bottom Time Do Not Fly Symbol 7.1. Surface interval An ascent to any depth shallower than 1.
7.3. Repetitive dive planning The Suunto HelO2 includes a dive planner that allows you to review the no-decompression limits on a subsequent dive, taking the residual nitrogen loading of previous dives into consideration. The dive plan mode is not meant for technical dive planning which the Suunto Dive Planner PC software is meant for. However, the dive plan mode can be used to plan short recreational dives.
By pressing the UP/DOWN buttons, you can scroll the no-decompression limits in 3 m/10 ft increments ending at 45 m/150 ft. No-decompression limits longer than 99min are displayed as “—“. WHEN ENTERING THE PLANNODEC MODE THE DISPLAY FIRST BRIEFLY SHOWS THE REMAINING DESATURATION TIME BEFORE GOING INTO PLAN MODE. USE UP AND DOWN BUTTONS TO SCROLL DIFFERENT NO-DECOMPRESSION LIMITS. NO-DECOMPRESSION LIMITS LONGER THAN 99 MINUTES ARE DISPLAYED AS “–”.
The dive time and date are registered in the Logbook memory. Always check before diving that the time and date are correctly set, especially after traveling between different time zones. 7.6.1. Dive logbook (MEMLogbook) The Suunto HelO2 has a very sophisticated, high capacity Logbook and Profile Memory. The data is recorded in the profile memory based on the selected sample rate. The END OF LOGS text is displayed between the oldest and most recent dive.
• OLF percentage of MIXED GAS dive Page III • scrolling • dive profile (temperature, depth, tank pressure, gases) NOTE The memory will retain approximately the last 42 hours of dive time. After that, when new dives are added, the oldest dives are deleted. The contents of the memory will remain when the battery is changed (providing that the battery has been replaced according to the instructions).
NOTE For emergency ascents, always print out the dive plan from Suunto Dive Planner. It ensures that you have a valid decompression schedule at hand in an unlikely event that the dive computer malfunctions. For more information about the warnings, such as Isobaric Counterdiffusion (ICD), and settings in Suunto Dive Planner, refer to Suunto Dive Planner Help. 7.8. Suunto Dive Manager (SDM) Suunto Dive Manager (SDM) is optional PC software that greatly enhances the functionality of your Suunto HelO2.
The Communities section is meeting a place for smaller groups of SuuntoSports.com members. Here you can create and manage your own communities and search for others. All communities have a home page that lists the latest group activities. Community members can also use group-specific bulletin boards and calendars, create their own link lists and group activities. All registered SuuntoSports.com users automatically become members of the ‘World of Suunto Sports’ community.
8. CARE AND MAINTENANCE OF MY SUUNTO DIVING COMPUTER The SUUNTO dive computer is a sophisticated precision instrument. Although it is designed to withstand the rigors of scuba diving, you must treat it with the same proper care and caution as any other precision instrument. • WATER CONTACTS AND PUSH BUTTONS Contamination or dirt on the water contacts/connector or push buttons may prevent the automatic activation of the Dive Mode and cause problems during the data transfer.
The water resistance of the unit must be checked after replacing the battery or after other service operations. The check requires special equipment and training. You must frequently check the display for any sign of leaks. If you find moisture inside your dive computer, there is a leak. A leak must be corrected without delay as moisture will seriously damage the unit, even beyond repair.
9. BATTERY REPLACEMENT NOTE It is advisable to contact an authorized Suunto representative for battery replacement. It is imperative that the change is made in a proper manner to avoid any leakage of water into the battery compartment or computer. CAUTION Defects caused by improper battery installation are not covered by the warranty. CAUTION When the battery is changed, all nitrogen and oxygen uptake data is lost.
11. Check that the new lubricated O-ring is in good condition. Put it in the right position on the battery compartment lid. Be very careful not to get any dirt on the o-ring or its sealing surfaces. 12. Carefully press the lid onto the battery compartment with your thumb, while making sure that the O-ring is not at any point protruding out on the edge. 13. Put your other thumb through the locking ring. Press this thumb firmly against the lid and release the other one.
CAUTION Defects caused by improper battery installation are not covered by the warranty. 9.4.1. Transmitter battery kit The transmitter battery kit includes a 3.0 V CR ½ AA lithium cell battery and a lubricated O-ring. When handling the battery, do not make contact with both of the poles at the same time. Do not touch the metal surfaces of the battery with your bare fingers. 9.4.2. Required tools • A Phillips-head screwdriver • Soft cloth for cleaning 9.4.3.
Wireless transmitter parts. The code stands for spare part order number.
10. TECHNICAL DATA 10.1. Technical specifications Dimensions and weight: • Diameter: 61.0 mm/2.4 in • Thickness: 28 mm/1.1 in • Weight: 68 g/2.4 oz Transmitter: • Max. diameter: 40 mm/1.57 in • Length: 80 mm/3.15 in • Weight: 118 g/4.
• Helium halftimes:1, 2, 3.5, 7.5, 15, 30, 45, 90, 181 minutes (on gassing). The off gassing halftimes are slowed down. • Reduced gradient (variable) "M" values based on diving habit and dive violations. The "M" values are tracked up to 100 hours after a dive • The EAN and oxygen exposure calculations are based on recommendations by R.W.
10.2.1. Suunto Technical RGBM decompression model Suunto's decompression model development originates from the 1980s when Suunto implemented Bühlmann's model based on M-values in Suunto SME. Since then research and development has been ongoing with the help of external and internal experts. In the late 1990s Suunto implemented Dr. Bruce Wienke's RGBM bubble model to work with the M model. The first commercial products with the feature were Vyper and Stinger.
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.
11. INTELLECTUAL PROPERTY 11.1. Copyright This user's manual is copyrighted and all rights are reserved. It may not, in whole or in part, be copied, photocopied, reproduced, or translated to any media without prior written consent from Suunto. 11.2. Trademark Suunto, HelO2, Consumed Bottom Time (CBT), Oxygen Limit Fraction (OLF), Suunto Reduced Gradient Bubble Model (RGBM), and Continuous Decompression and their logos are all registered or unregistered trademarks of Suunto. All rights are reserved. 11.3.
12. DISCLAIMERS 12.1. User’s responsibility This instrument is intended for recreational use only. Suunto HelO2 must not be used for obtaining measurements that require professional or industrial precision. 12.2. CE The CE mark is used to mark conformity with the European Union EMC directive 89/336/EEC FIOH, Topeliuksenkatu 41 a A, FI-00250 Helsinki, Finland, notified body no.0430, has EC type-examined this type of personal protective equipment.
13. SUUNTO LIMITED WARRANTY FOR SUUNTO DIVING COMPUTERS AND SUUNTO DIVING COMPUTER ACCESSORIES This Limited Warranty is valid as of January 1st, 2007. Suunto Oy ("Suunto") provides this limited warranty to those who have purchased the Suunto Diving computer and/or Suunto diving computer accessories ("Product").
This Limited Warranty is not enforceable if: 1. the Product has been opened, modified or repaired by anyone other than Suunto or a Suunto Authorized Service Centre; 2. the Product has been repaired using unauthorized spare parts; 3. the Product's serial number has been removed, erased, defaced, altered or made illegible in any way - and this shall be determined at the sole discretion of Suunto; 4.
FROM THE PURCHASE OR USE OF THE PRODUCT OR ARISING FROM BREACH OF THE WARRANTY, BREACH OF CONTRACT, NEGLIGENCE, STRICT TORT, OR ANY OTHER LEGAL OR EQUITABLE THEORY, EVEN IF SUUNTO KNEW OF THE LIKELIHOOD OF SUCH DAMAGES. SUUNTO SHALL NOT BE LIABLE FOR DELAY IN RENDERING SERVICE UNDER THE LIMITED WARRANTY, OR LOSS OF USE DURING THE TIME THE PRODUCT IS BEING REPAIRED.
14. DISPOSAL OF THE DEVICE Please dispose of the device in an appropriate way, treating it as electronic waste. Do not throw it in the garbage. If you wish, you may return the device to your nearest Suunto representative.
GLOSSARY Altitude dive A dive made at an elevation greater than 300 m/1000 ft above sea level. Ascent rate The speed at which the diver ascends toward the surface. ASC RATE Abbreviation for ascent rate. Ascent time The minimum amount of time needed to reach the surface on a decompression stop dive. ASC TIME Abbreviation for ascent time. Ceiling On a decompression stop dive, the shallowest depth to which a diver may ascend based on computed nitrogen load.
No decompression dive Any dive which permits a direct, uninterrupted ascent to the surface at any time. NO DEC TIME Abbreviation for no decompression time limit. OEA = EAN = EANx Abbreviations for oxygen enriched air nitrox. OLF Abbreviation for oxygen limit fraction. OTU Abbreviation for oxygen tolerance unit. Oxygen tolerance unit Used to measure the whole-body-toxicity. Oxygen limit fraction A term used by Suunto for the values displayed in the oxygen toxicity bar graph.
CUSTOMER SERVICE CONTACTS Global Help Desk Suunto USA Phone Canada Phone Suunto website +358 2 284 11 60 +1 (800) 543-9124 +1 (800) 267-7506 www.suunto.com COPYRIGHT This publication and its contents are proprietary to Suunto Oy. Suunto, Dive Computer, Suunto HelO2 and their logos are registered or unregistered trademarks of Suunto Oy. All rights reserved.
TWO YEAR WARRANTY This product is warranted to be free of defects in material and/or workmanship to the original owner for the above noted period (does not include battery life). Keep a copy of the original purchase receipt and make sure to get this warranty card stamped at the place of purchase. The warranty originates from the date of purchase. All warranties are limited and are subject to the restrictions given in the instruction manual.
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