User manual SCUBAPRO-UWATEC SMART PRO - SMART COM

Smart PRO Smart COM ® SWISS MADE BY UWATEC AG Français English Operating Manual Deutsch Safety considerations You must carefully read and understand this entire manual before using your new computer. Diving has many inherent risks. Even if you follow the instructions of this manual in a careful manner, it is still possible that you may be seriously injured or die from decompression sickness, oxygen toxicity or some other inherent risk of scuba with Nitrox or compressed air. Unless you are fully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use the computer! WARNING Guidelines for the use of your UWATEC dive computer: The following guidelines are derived from the latest medical research and the recommendations of the American Academy of Underwater Sciences for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness or oxygen toxicity will not occur. · This computer is designed for dives with Nitrox (to a max.100% O2) and compressed air (21%O2) only. Do not use the computer for dives made with other mixed gases. · It is absolutely necessary to check the set mixture before each dive and to compare it to the gas mixture currently used. Always remember: setting an incorrect mixture carries an inherent risk of decompression sickness and/or oxygen toxicity! Maximum deviation from the measured mixture must not exceed 1% O2. An incorrect gas mixture can be lethal! · Only use this computer with open circuit breathing systems. The computer must be set for a determined gas mixture. · Only use this computer for diving with an independent breathing apparatus. The computer is not designed for long term exposures with Nitrox. · Always observe the visual and audible alarm signals of the computer. Avoid situations of increased risk which are marked with a warning sign in this operating manual. · If the ascent arrow appears, start to ascend. · If the flashing ascent arrow appears, start to ascend immediately. · This computer has a ppO2 warning, the default limits of which are set at 1.4 bar ppO2max. This limit can be adjusted via SmartTRAK. An alteration of the ppO2max to higher than 1.6 bar is dangerous and we do not recommend this. · Frequently check the "oxygen clock" (CNS O2), especially in the range higher than 1.4 bar ppO2. Ascend and finish the dive if the CNS O2 exceeds 75%. · Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas mixture in use. · Always check the diving limits considering the oxygen content and standard sports diving procedures (decompression sickness, oxygen toxicity). · In accordance with the recommended maximum diving limit of all instructional agencies, do not dive deeper than 40 metres/130 feet. · The danger of nitrogen narcosis has to be taken into consideration. The computer gives no warning about this. · On all dives, with or without dive computer, make a safety stop for at least 3 minutes at 5 metres (15 feet). · All divers using dive computers to plan dives and indicate or determine decompression status must use their own computer, which they take with them on all dives. · If the computer fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 ft) should be initiated immediately. · Comply with the ascent rate and carry out any decompression stop required. If the computer should fail for any reason, you must ascend at a rate of 10m (30 feet) per minute or less. · On any given dive, both divers in a buddy pair must follow the most conservative dive computer for that particular dive. · Never dive without a buddy. The computer does not substitute for a dive buddy. · Only make dives that are appropriate to your level of dive training. A dive computer does not increase your knowledge of diving. · Always dive with back-up instruments. Make sure that you always use back-up instrumentation including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, and have access to decompression tables whenever diving with a dive computer. 2 UWATEC® Smart dive computers Safety considerations · · · · I Avoid repeated ascents and descents (yo yo diving). Avoid repeated heavy workload while at depth. Plan the dives to be shorter if they are made in cold water. After finishing the decompression or at the end of a no-stop dive, the final stage of the ascent should be as slow as possible. · You MUST be familiar with all signs and symptoms of decompression sickness before using this computer! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay between the onset of symptoms and the treatment for decompression sickness. · Only dive with Nitrox after you have been thoroughly instructed by a recognised institution. Repetitive dives · Do not start your next dive before your CNS O2% status has dropped below 40%. · Diving with Nitrox: make sure your surface interval is long enough (just like diving with compressed air). Plan for a minimum surface interval of two hours. Oxygen, too, needs sufficient time to leave the body. · Match gas mixture to the intended dive. is visible on the display. · Do not attempt a repetitive dive if the microbubble warning · Plan a day without diving once a week. · If you have to change computers, wait at least 48 hours before carrying out your next dive. NO Altitude and diving · Do not dive at altitudes higher than 4000 m (13000 ft). · After a dive do not rise to altitudes that the computer prohibits via the flashing altitude segments (see page 21). Flying after diving · After diving, wait at least 24 hours prior to flying. The Smart PRO and Smart COM dive instruments are personal protective equipment in compliance with the essential safety requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa, notified body no. 0474, have certified their conformity with the European Standard EN 13319:2000 and, limited to Smart COM with the European Standard EN 250:2000. EN250:2000 Respiratory equipment - Open-circuit self contained compressed air diving apparatus Requirements, testing, marking (pressure gauge test). EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices Functional and safety requirements, test methods. Any information on decompression obligation displayed by equipment covered by this standard is explicitly excluded from its scope. UWATEC® Smart dive computers 3 English Introduction Congratulations on purchasing a Smart PRO or Smart COM dive computer and welcome to UWATEC. From now on you will enjoy the assistance of the most extraordinary dive computer - equipped with UWATEC's most innovative technology - while diving. This operating manual provides full information on the operation and functions of UWATEC Smart PRO and Smart COM dive computers. To make this manual easier to read we will use the term ,,Smart" as an abbreviation for ,,UWATEC Smart PRO diving computer" and ,,UWATEC Smart COM diving computer" throughout this booklet. Information which is valid only for Smart COM is marked with ,,COM". We thank you for choosing Smart and we hope you will enjoy safe dives in the future! Further information on UWATEC Smart dive computers and other products by UWATEC can be found on our web page at www.uwatec.com. Safety considerations Dive computers provide divers with data; they, however, do not provide the knowledge how this data should be understood and applied. Dive computers cannot replace common sense! You must therefore carefully read and understand this entire manual before using your Smart. Important remarks concerning signal words and symbols This operating manual makes use of the following icons to indicate especially important comments: Remarks Information and tips which are important for optimal use of the functions of Smart. Danger! WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. The following symbols are used in the operating manual: Flashing display -> Page reference e.g. ->10 COM Information valid only for Smart COM Audible signals 4 sec Audible attention signal Audible alarm signal Instructions for manual input ­+E B Operating instruction for manual input Example: bridging contacts B and E 4/2005, Copyright© by UWATEC Switzerland 4 UWATEC® Smart dive computers Quick reference O2 mix icon (input) Logbook icon Dive planner icon Temperature Do not dive icon / Microbubble warning Current depth Ascent obligation Altitude sections Too fast ascent Maximum depth MAX.DEPTH S L O W I Microbubble level icon (input / MB level reduced) Ready for input (O2 mix, MB level) Service icon English DEPTH NO NO F C % DIVE TIME O2 mix / Microbubble level / Battery capacity Do not fly icon Dive time / No-fly time Logbook indicator Total ascent time / Dive number CNS O2% h % LOG SPEED DECO STOP LEVELSTOP NO STOP ft h m DECO INFO DESAT Ascent time icon Desaturation time indicator Decompression stop obligation Ignored decompression stop Level stop indicator No-stop indicator Decompression stop indicator TANK DATA No-stop time / Decompression stop duration MB no-stop time / Level stop duration Duration of microbubble warning Desaturation time / Duration of surface interval Decompression depth / Level stop depth Oxygen toxicity CNS O2% / Ascent rate Tank pressure warning Increased workload warning psi bar RBT COM Tank pressure / Gas consumed Remaining Bottom Time RBT RBT warning Operating scheme Start / Enter + / Navigate ­ / Navigate Dive planner 29 MAX.DEPTH DEPTH DIVE TIME Display switched off DECO INFO Logbook 31 Switching on 9 COM Tank pressure >8bar/116psi DEPTH · Display switches off automatically after 3 minutes without operation. · The backlight can be switched on by pressing Smart PRO above the display, and Smart COM at the right hand side of the display. O2 mix 14 Microbubble level 22 C % DIVE TIME Navigation DESAT h MAX.DEPTH DECO INFO ( + Surface ­ interval % DEPTH DIVE TIME ) DEPTH C % DIVE TIME Battery capacity % DIVE TIME 9 % DIVE TIME LOG DIVE TIME NO STOP MAX.DEPTH DECO INFO MAX.DEPTH DECO INFO + Bottom time ­ Exit + Dive number ­ Exit + ­ Percentage of oxygen + ­ Microbubble level Confirmation Confirmation UWATEC® Smart dive computers 5 List of chapters I Safety considerations Introduction Important remarks concerning signal words and symbols Quick reference / Operating scheme List of chapters System and operation System description Operation 2.1 Operating elements 2.2 SmartTRAK 2.3 Switching on the display 2.4 Checking the battery capacity 2.5 Selection and activation of user functions 2.6 Active backlight 2.7 Switching off the display SOS mode COM Setting up Smart COM 4.1 Mounting the high pressure hose to the first stage ___________________________________ 2 ___________________________________ 4 ___________________________________ 4 ___________________________________ 5 ___________________________________ 6 ___________________________________ 8 ___________________________________ 8 ___________________________________ 8 ___________________________________ 8 ___________________________________ 8 ___________________________________ 9 ___________________________________ 9 ___________________________________ 9 __________________________________ 10 __________________________________ 10 __________________________________ 10 __________________________________ 10 __________________________________ 10 II 1 2 3 4 III Diving with Smart __________________________________ 11 1 Terminology / Symbols __________________________________ 11 1.1 General terminology / Display during no-stop phase __________________________________ 11 1.2 Display during decompression phase / Remaining Bottom Time (RBT) __________________________________ 11 __________________________________ 12 1.3 Nitrox information (O2 information) 2 Attention messages and alarms 2.1 Attention messages 2.2 Alarms Preparation for the dive 3.1 Setting the gas mixture 3.2 Setting the MB level 3.3 COM Additional preparation for the dive with Smart COM 3.4 Inspection Functions during the dive 4.1 Immersion 4.2 Dive time 4.3 Current depth 4.4 Maximum depth 4.5 Ascent rate 4.6 Partial pressure of oxygen (ppO2) / Maximum Operating Depth (MOD) 4.7 Oxygen toxicity (CNS O2%) 4.8 COM Tank pressure 4.9 COM Remaining Bottom Time (RBT) 4.10 Decompression information __________________________________ 13 __________________________________ 13 __________________________________ 13 __________________________________ 14 __________________________________ 14 __________________________________ 14 __________________________________ 14 __________________________________ 14 __________________________________ 15 __________________________________ 15 __________________________________ 15 __________________________________ 15 __________________________________ 15 __________________________________ 15 __________________________________ 16 __________________________________ 17 __________________________________ 17 __________________________________ 18 __________________________________ 18 3 4 6 UWATEC® Smart dive computers List of chapters 5 Functions at the Surface 5.1 End of a dive 5.2 Desaturation time 5.3 No-fly time 5.4 Microbubble warning Diving in mountain lakes 6.1 Altitude ranges 6.2 Prohibited altitude 6.3 Decompression dives in mountain lakes I __________________________________ 20 __________________________________ 20 __________________________________ 20 __________________________________ 20 __________________________________ 20 __________________________________ 21 __________________________________ 21 __________________________________ 21 __________________________________ 21 __________________________________ 22 __________________________________ 22 __________________________________ 23 __________________________________ 23 __________________________________ 23 English 6 IV Diving with microbubble levels (MB) 1 Comparison of dives with MB level 0 and MB level 5 2 Terminology 2.1 Display during microbubble (MB) no-stop phase 2.2 Display during level stop phase 3 4 Preparation for a dive with microbubble levels (MB levels) __________________________________ 24 3.1 Setting the MB level __________________________________ 24 Functions during the dive with microbubble levels 4.1 Level stop information 4.2 Total time of ascent 4.3 Decompression obligation 4.4 Level stop and deco stop Complete a dive with MB levels __________________________________ 24 __________________________________ 24 __________________________________ 25 __________________________________ 25 __________________________________ 26 __________________________________ 26 __________________________________ 27 __________________________________ 29 __________________________________ 29 __________________________________ 30 __________________________________ 31 __________________________________ 31 __________________________________ 31 __________________________________ 32 __________________________________ 32 __________________________________ 32 __________________________________ 33 __________________________________ 34 __________________________________ 35 5 V Gauge mode VI Dive planner 1 Planning a no-stop dive 2 Leaving the dive planner VII Logbook 1 Survey 2 Operating VIII Appendix 1 Technical Information 2 3 4 5 Maintenance COM Conversion of tank pressure Warranty Index UWATEC® Smart dive computers 7 II System and operation 1 System description Smart displays all important dive and decompression data. Smart has a data memory which stores the dive data. The data can be transmitted with an infrared interface (IrDA) and SmartTRAK software to a Windows® personal computer. SmartTRAK CD software is included with the Smart package. Infrared interfaces are available in PC stores. A list of recommended interfaces is available on the UWATEC homepage (www.uwatec.com). SmartTRAK Infrared port Infrared port Smart COM Smart PRO Smart IR (Infrared) device 2 Operation On page 5 you will find an operating schematic. 2.1 Operating elements Smart has 4 operating contacts B, E, +, ­ on the outside of the housing. For manual operation, touch base contact B and any one of the other three contacts above the display with moistened fingers ("bridging" contacts). + E + E Contact B Base contact, which has to be touched for all operations. Contact E Enter contact. It serves to switch on Smart and to confirm or enter the displayed value. It is therefore comparable to the ENTER or RETURN key of a keyboard. B B + / ­ Contacts These allow to navigate between menus and, once inside a menu, to increase or decrease the indicated value. 2.2 SmartTRAK With SmartTRAK you can transfer dive data to a personal computer and graphically display the data. The following settings may be changed with SmartTRAK: · Unit system · Audible attention signal suppression · Gauge mode · Depth alarm · Backlight illumination duration · Maximum partial pressure of oxygen (ppO2 max) metric/imperial selective on / off 5 - 100 m (20 - 330 feet) 2-12 sec. 1-1.95 bar · Time limit to reset the O2 % mix to air · COM Minimum reserve pressure at the end of the dive (basis for RBT calculation) · COM Tank pressure alarm · COM Workload sensitivity no reset / 1 - 48 hrs. 20 ­ 120 bar (300 - 1750 psi) 50 - 200 bar (750 - 2900 psi) 25 steps 8 UWATEC® Smart dive computers 2 Operation The following data may be recalled with SmartTRAK: · Number of past dives · Total duration of past dives · Atmospheric pressure · Dive profile · Logbook · Temperature curve · COM Workload curve · Alarms and attention messages II 2.3 Switching on the display · automatically, on submerging in water or when adaptation to atmospheric pressure is necessary; · manually by bridging contacts on housing (B-E). · COM on opening the tank valve (if connected) (Tank pressure 8 bar / 116 psi). % · When Smart is in state of rest no information is displayed but the atmospheric pressure is continuously monitored. If h a higher altitude range is detected, Smart switches on for % LOG 3 minutes automatically -> 21. ft · Smart switches on by bridging the contacts B and E. All h m segments light up for 5 seconds. DEPTH DIVE TIME DEPTH F C DIVE TIME NO NO CNS O2% MAX.DEPTH DECO INFO S L O W SPEED DESAT DECO STOP LEVELSTOP NO STOP MAX.DEPTH DECO INFO DEPTH C % DIVE TIME O2 Mix Temperature Afterwards the display shows the selected O2 mix, the temperature and in certain circumstances an altitude range (-> 21). Smart COM displays the tank pressure also. If there is a remaining saturation from the last dive or from a change of altitude, Smart also displays the time, the icon, the current altitude range and the prohibited altitude range (->20). DEPTH MAX.DEPTH NO C % DIVE TIME DECO INFO Do not fly symbol No-fly time Oxygen toxicity Desaturation time CNS O2% h % DESAT h MAX.DEPTH DECO INFO DEPTH 2.4 Checking the battery capacity After switching on Smart you can check the battery capacity by bridging contacts B and E. The remaining capacity is displayed for 3 seconds as a % percentage. If the value reaches 0%, the battery warning gets activated (-> 13) and the battery has to be replaced by an authorised SCUBAPRO UWATEC dealer. For a 7-day diving vacation Smart uses between 2 ­ 5 % of its battery capacity. Battery capacity DIVE TIME MAX.DEPTH 2.5 Selection and activation of user functions At the surface you can select the dive planner, the logbook and the functions to enter the O2% mix and the microbubble level by bridging the contacts + and B or ­ and B. DECO INFO Input microbubble level -> 24 Input O2 mix -> 14 Logbook -> 31 Dive planner -> 29 MAX.DEPTH DECO INFO After the selection of the desired function you can activate and deactivate it by bridging the contacts B and E. Details to the user functions are to be found on the pages mentioned above. UWATEC® Smart dive computers 9 English 2 Operation 2.6 Active backlight The display of Smart can be illuminated both on the surface and underwater. The backlight can be switched on by pressing Smart PRO above the display, and Smart COM at the right hand side of the display. The light will turn off automatically after 8 seconds or after the time selected via SmartTRAK. The backlight can only be activated if the computer display is on. 2.7 Switching off the display · automatically after 3 minutes without operation on the surface. · COM at the surface: automatically after 3 minutes without a reduction of tank pressure. The display switches on again after starting to breathe from the tank. 3 SOS mode Dive time DEPTH C % DIVE TIME DECO STOP m MAX.DEPTH DECO INFO Maximum depth Violated decompression Activation: automatic If the diver remains above a depth of 0,8 m (3 feet) for more than three minutes without observing a prescribed decompression, the computer switches into SOS mode after the dive and displays instead of the depth. The computer is locked from use for the next 24 hours. The display shows the most important information of the dive. Desaturation is further calculated including microbubbles in the tissues. Diving is again possible after 24 hours, but the SOS mode can influence the calculations of Smart for three days after the incident due to the possible presence of microbubbles. If a diver using Smart experiences a diving accident resulting in decompression sickness, the dive can be analysed by means of the infrared interface and SmartTRAK software. WARNING Serious injury or death may result if a diver does not seek immediate treatment should any signs or symptoms of decompression sickness occur after a dive. 4 COM Setting up Smart COM 4.1 Mounting the high pressure hose to the first stage The high pressure hose is mounted on the high pressure outlet (HP outlet) of the first stage of the regulator. Adapter 1. Mount the high pressure hose on the HP outlet. If the threads do not match, you can obtain an adapter from your diving retailer. 2. Tighten the connection with a matching wrench. 10 HP UWATEC® Smart dive computers III Diving with Smart 1 Terminology / Symbols III The information on the display of Smart varies depending on the kind of dive and the dive phase. For information about diving with microbubble levels (MB levels) see chapter IV (-> 22). 1.1 General terminology / Display during no-stop phase Oxygen toxicity CNS O2% Ascent rate (Only while ascending) Current depth In metres (feet) Temperature DEPTH No-stop phase Dive phase during which surfacing is allowed without stop. % SPEED Decompression phase Dive phase during which surfacing is allowed only after decompression stops are completed. Time O2% Mix Selected oxygen fraction Dive time Duration of the dive (min) Depth C % DIVE TIME CNS O2% % Current depth 24min NO STOP MAX.DEPTH DECO INFO Maximum depth Maximum depth reached during the dive. TANK DATA No-stop time Remaining time at a given depth during which ascent 26.2 m is allowed without decompression stop (min) Tank pressure Remaining Bottom Time, RBT Maximum depth 37 min. Dive time Elapsed bottom time No-stop time bar RBT COM 1.2 Display during decompression phase / Remaining Bottom Time (RBT) Decompression stop All required decompression stops must be observed. C Total ascent time to surface (7 min) Time COM TANK DATA bar Depth 3m % DIVE TIME 6m Deepest decompression stop depth DEPTH CNS O2% % DECO STOP 2 min Decompression stop duration m DECO INFO MAX.DEPTH Decompression stop depth Deepest stage is displayed. Decompression stop duration Prescribed duration of the decompression stop at the displayed decompression stage (minutes). UWATEC® Smart dive computers RBT 21 min 35.7 m No-stop range Decompression range TANK DATA Total ascent time Including decompression stops in minutes. bar RBT Tank pressure Remaining Bottom Time, RBT Maximum remaining time at current depth including all decompression obligations (minutes). COM 11 English 1 Terminology / Symbols 1.3 Nitrox information (O2 information) For dives with compressed air in normal recreational diving, nitrogen is the decisive gas for the decompression calculations. When diving with Nitrox, the risk of oxygen toxicity rises with the increase of the fraction of oxygen and the increase of depth and can limit dive time and the maximum depth. Smart includes this in the calculations and displays the necessary information: Fraction of oxygen: the fraction of oxygen in the Nitrox mixture can be set between 21% (normal compressed air) and 100% in 1% increments. Your selected mix will be the basis for all calculations. Maximum allowed partial pressure of oxygen: the higher the fraction of oxygen in the mixture, the shallower the dive depth at which this value of the partial pressure of oxygen is reached. The depth at which ppO2 max. is reached is called Maximum Operating Depth (MOD). Default setting is 1.4 bar, but it can be set by means of SmartTRAK between 1.0 and 1.95 bar. Smart does not display the entered ppO2 limit, but warns the diver audibly and visually once the depth is reached at which the ppO2 reaches the maximum allowed value. The CNS O2% value/alarm is not influenced by the selected ppO2max. setting. Oxygen toxicity: With the increased percentage of oxygen, the oxygen in the tissues (especially in the central nervous system (CNS)) becomes important. If the partial pressure of oxygen rises above 0.5 bar, the CNS O2 value increases, if the partial pressure of oxygen is below 0.5 bar, the CNS O2 value decreases. The closer the CNS O2 value is to 100%, the closer the limit where symptoms can occur -> 17. ppO2 0,21 bar ppO2 max CNS O2% decreases 0,5 bar CNS O2% increases WARNING Nitrox diving may only be attempted by experienced divers after proper training from an internationally recognized agency. 12 UWATEC® Smart dive computers 2 Attention messages and alarms III Smart draws the diver's attention to certain situations and warns the diver of unsafe diving practices. Attention messages and alarms are always visual and audible under water, only visual at the surface except the decompression alarm. The audible attention messages (but not the alarms) can be switched off selectively with SmartTRAK. 2.2 Alarms Serious injury or death may result from failing to immediately respond to alarms given by Smart. Alarms are given to the diver visually by flashing symbols, letters or figures. In addition, an audible sequence in one frequency can be heard during the whole duration of the alarm. (can not be switched off) An alarm occurs in the following situations (more information can be found on the listed pages): Page 16 15 17 18 21 19 18 17 17 24 25 25 25 Low battery alarm** The service symbol appears if the battery capacity reaches 0%. Take the unit to your authorised SCUBAPRO % UWATEC retailer. DIVE TIME WARNING 2.1 Attention messages Attention messages are communicated to the diver visually by symbols, letters or flashing figures. In addition, two short audible sequences can be heard (in an interval of 4 seconds) in two different frequencies under water. 4 sec (can be switched off) Attention messages come up in the following situations (more information can be found on the listed pages): Page · Maximum Operating Depth / max. ppO2 is reached · Set maximum depth is reached · Oxygen toxicity reaches 75% · No-stop time = 2 minutes · Prohibited altitude* (surface mode) · Entering decompression when diving with L0 · COM Remaining Bottom Time <3 minutes · COM Tank pressure has reached set warning level · COM Increased workload Diving with microbubble levels (L1-L5): · MB no-stop time = 0 · MB level stop ignored · MB level reduced · Entering decompression when diving DEPTH with MB level L1-L5 · · · · Oxygen toxicity reaches 100% Ignored decompression COM Remaining Bottom Time = 0 Exceeding the prescribed ascent rate (Particular scale of beeps, ->16) 17 19 18 16 see below · Low battery alarm** * without audible attention beep **without audible alarm MAX.DEPTH DECO INFO UWATEC® Smart dive computers 13 English 3 Preparation for the dive 3.1 Setting the gas mixture Before every dive and after changing the tank, make sure that the setting of the gas mixture corresponds to the current mixture used. An incorrect setting causes Smart to miscalculate this particular dive. If the fraction of oxygen is set too low this can lead to oxygen poisoning without warning. If the value is set too high decompression sickness may occur. Inaccuracies in the calculations are carried over to repetitive dives. To set the gas mixture, Smart must be in user mode. ... DEPTH WARNING % DIVE TIME ... 1. Bridge contacts B and + or B and ­ until the symbol for the setting of the O2 mixture appears. 2. Confirm that you wish to change the displayed oxygen fraction by bridging B and E. DEPTH MAX.DEPTH +­ % DIVE TIME DECO INFO 3. Change the oxygen fraction in increments of 1% by bridging contacts B and + to increase or B and ­ to decrease (21-100%). 4. Confirm the selected percentage with B and E. MAX.DEPTH WARNING DECO INFO Without confirmation the display will disappear after 3 minutes and your entries will not be accepted. The time to reset the O2 % mix to air can be set with SmartTRAK between 1 and 48 hours or to "no reset" (default). 3.2 Setting the MB level See chapter IV, -> 24. 3.3 COM Additional preparation for the dive with Smart COM The following description of the preparation of a dive is based on the assumption that the high pressure hose is correctly mounted on the HP outlet and Smart COM is connected with the HP hose (-> 10). WARNING If the high pressure hose is not correctly mounted, it will not perform properly and serious injury or death may result. 1. Mount the regulator together with the high pressure hose on the tank. WARNING TANK DATA 2. If present, check the reserve valve of your tank, the reserve valve must be open. 3. Open the valve and check the tank pressure (after approx. 10 sec.). If the pressure is insufficient, change the tank. Make an inspection before each dive: 1. Switch on Smart (B-E). 2. Check the test display: are all the elements of the display activated? Use Smart only if all elements of the display are activated. 3. COM Check the connections and instruments for leaks. Never dive with leaky equipment! bar 3.4 Inspection DEPTH NO NO F C % DIVE TIME CNS O2% S L O W h % LOG SPEED DECO STOP LEVELSTOP NO STOP MAX.DEPTH ft h m DECO INFO DESAT TANK DATA psi bar RBT COM 14 UWATEC® Smart dive computers 4 Functions during the dive III 4.2 Dive time DEPTH C % DIVE TIME The whole time spent below a depth of 0.8m (3 feet) is displayed as dive time in minutes. The time above 0.8m (3 feet) is counted as dive time only if the diver descends again below 0.8m (3 feet) within 5 minutes. While the dive time is running, the colons on the right of the figures are flashing in one second intervals. Maximum dive time displayed is 199 minutes. If a dive lasts longer than 199 minutes the dive time display starts again at 0 minutes. Current depth is given in 10 cm increments (1 foot). At a diving depth of less than 0.8 m (3 ft) the display shows <­ ­ ­>. % DIVE TIME NO STOP MAX.DEPTH DECO INFO Dive time 4.3 Current depth DEPTH C % DIVE TIME DEPTH C NO STOP MAX.DEPTH DECO INFO MAX.DEPTH DECO INFO Depth measurement is based on freshwater. Therefore, Smart shows a slightly greater depth when diving in salt water, depending on the salinity of the water. No calculation however is affected. Current depth 4.4 Maximum depth DEPTH C % DIVE TIME Maximum depth is only displayed if it exceeds the current depth by more than 1 m (3 feet) (maximum indicator function). CNS O2% % NO STOP MAX.DEPTH DECO INFO Maximum depth 4 sec DEPTH C % DIVE TIME WARNING CNS O2% % Set maximum depth reached If the maximum depth set with SmartTRAK has been reached (default 40m/130 feet), the current depth will flash and the ascent arrow will be displayed. Ascend until the ascent arrow disappears. NO STOP MAX.DEPTH DECO INFO 4.5 Ascent rate DEPTH C % DIVE TIME S L O W % SPEED NO STOP MAX.DEPTH DECO INFO Optimal ascent rate varies depending on depth between 7 and 20 m/min (23 and 67 ft/min). It is displayed as a percent of the reference variable ascent rate. If the ascent rate is greater than 100% of the set value, the black arrow appears. If the ascent rate exceeds 140%, the arrow starts flashing. Smart provides an audible alarm if the ascent rate is 110% or greater. The intensity of the alarm increases in direct proportion to the degree that the prescribed ascent rate is exceeded. Ascent rate UWATEC® Smart dive computers 15 English 4.1 Immersion After immersion, starting at a depth of about 0.8 m (3 ft), all diving functions are monitored, i.e. depth and dive time displayed, maximum depth stored, saturation of tissues calculated, no-stop time or decompression prognosis determined, ascent rate controlled and displayed and the correctness of the decompression procedure supervised. In addition, Smart COM also shows the tank pressure and about 2 minutes into the dive the Remaining Bottom Time (RBT) is displayed. 4 Functions during the dive WARNING The prescribed ascent rate must be observed at all times! Exceeding the prescribed ascent rate can lead to microbubbles in the arterial circulation which can lead to serious injury or death due to decompression sickness. · In case of an improper ascent Smart may require a decompression stop even within the no-stop phase because of the danger of microbubbles formation. · The decompression duration necessary for the prevention of microbubbles can increase massively if the ascent rate is exceeded. · From great depth a slow ascent may cause heightened saturation of tissues and an extension of both decompression duration and total ascent time. At shallow depth, a slow ascent may shorten the decompression duration. · Display of the ascent rate has the priority over . WARNING Ascent rate Visual alarm S L O W Audible alarm % SPEED % SPEED S L O W % SPEED S L O W % SPEED S L O W Reduce ascent rate Excessive ascent rates for longer periods are entered in the logbook. 4.6 Partial pressure of oxygen (ppO2 max) / Maximum Operating Depth (MOD) The maximum partial pressure of oxygen ppO2 max (default 1.4 bar) determines 4 sec the Maximum Operating Depth (MOD). Diving deeper than the MOD will expo% se the diver to oxygen partial pressures higher than the set maximum level. DEPTH C DIVE TIME CNS O2% % The ppO2 max can be set by means of SmartTRAK between 1.0 and 1.95 bar. The set value and the information about the current ppO2 are not displayed. DECO INFO NO STOP MAX.DEPTH WARNING The MOD is a function of ppO2 max and the mixture used. If during the dive the MOD is reached or exceeded Smart sends an audible attention message, the ascent arrow appears and the current depth display starts flashing. Ascend to a shallower depth in order to diminish the danger of oxygen poisoning. · The MOD should not be exceeded. Disregarding the warning can lead to oxygen poisoning. · ppO2 max should not be set higher than 1.6 bar WARNING 16 UWATEC® Smart dive computers