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300G & Atmos Pro

1. depress the Advance Left button once to revert to Surface Mode SET AUDIBLE ALARM ON OFF AERIS 300G ONLY Factory set for Alarm On Fig 20 To turn the alarm Off depress both buttons simultaneously while in Surface Mode depress the Advance Left button 1 time to access the Alarm Mode depress the Select Right button to toggle between On and Off depress the Advance Left button once to revert to Surface Mode SET UNITS OF MEASURE Factory set for imperial units of measure FT and F Fig 21 To change dis play values to metric units of measure M and C depress both buttons simultaneously while in Surface Mode depress the Advance Left button 1 time Atmos Pro or 2 times Aeris 300G to access the Units Mode depress the Select Right button to toggle between Imperial and Metric depress the Advance Left button once to revert to Surface Mode Fig 21 Set Units of Measure 21 SET DATE TIME Factory set for J anuary 1 1997 12 00 AM midnight To change to the cor rect Date Time depress both buttons simultaneously while in Surface Mode depress the Advance Left button 3 times Atmos Pro or 4 times Aeris 300G to access the Date T ime Mode The DATE screen will appear with the Year flashing Fig 22a Hint To bypass a display that is flashing do not depress the Select right but Fig 22a Set Date ton instead depress the Advance L
2. External Access to download Date year month day Time hour minutes Dive Profile Resolution No Decompression Dive Decompression Dive Alternate Decompression Dive Violation conditional delayed amp immediate Gauge High PO2 Level High Oxygen Accumulation Temperature DiveLog nitrogen amp oxygen Timeto Fly and Desaturate Atmos Pro Aeris 300G SPECIFICATIONS continued DISPLAY RANGE RESOLUTION Numeric Displays Range Resolution Ascent Rate Indicator Dive Number 0 9 1 segments feet min meters min Depth 0 330 ft 0 99 5 m 1ft 5 m 0 0 20 0 6 Maximum Depth 330 ft 99 5 m 1 ft 5m Normal zone green 1 21 30 6 5 9 FO2 Set Point 21 50 1 Caution zone yellow 2 31 40 9 5 12 PO2 Value 1 40 5 00 ATA 01 ATA 3 41 50 12 5 15 DiveTime Remaining 0 9hr 59 min 1 minute 4 51 60 15 5 18 Total Ascent Time 0 9hr 59 min 1 minute Too Fast zone red flashing 5 61 18 5 Decompression Stop Time 0 99 min per stop depth 1 minute Elapsed Dive Time 0 9hr 59 min 1 minute Special Displays Occurrence e Surface Time 0 23hr 59 min 1 minute Diagnostic Display Activation DiveLog Surface Interval 0 25hr 59 min 1 minute Out of Range oor gt 330 feet gt 99 5 meters Timeto Fly 23 hr 50 min O 1 minute Gauge Mode Countdown Timer 24 00 hours after violation starting 10 min after the dive Timeto Desaturate 9 hr 59 min O 1 minute OPERATIONAL P
3. dashes and a countdown from 9 to 0 While conducting diagnostics the dis play is illuminated by the backlight as it checks its display functions and bat tery voltage to ensure that everything is working correctly Upon activation it will also check the ambient barometric pressure and cali brate its present depth as zero At elevations of 2 000 feet 610 m or higher it will recalibrate itself to measure depth in feet of fresh water instead of feet of sea water If no dive is made within 2 hours after initial activation the unit will auto matically deactivate to conserve its battery power Atmos Pro Aeris 300G Always check the display before entering the water to ensure that it is activated WARNING During activation and diagnostics if any display or function varies from the information presented here return the Atmos Pro Aeris 300G to your Aeris Dealer for inspection SURFACE MODE Surface Mode identified by the Surface Time icon Fig 16a immediately fol lows Diagnostic Mode after initial activation Information displayed includes the Dive Number 0 no dive made yet and Surface Time with flashing colon If battery voltage is low the Battery icon will be displayed flashing Fig 17a and the unit will shut off See the Care and Maintenance Section for more in A formation regarding Low Battery and battery replacement La WARNING If a Low Battery condition is indicated following diagnost
4. Pressure Display Aeris 300G only Theanalog Cylinder Pressure gauge indicates how much breathing gas is in your cylinder up to 5000 PSI 352 BAR to the nearest 10 PSI 5 BAR Pres sure will be displayed continuously AUDIBLE ALARM AERIS 300G ONLY Low Pressure Alarm e When tank pressure decreases to 500 psi 35 BAR 6 beeps will be emit ted followed by one beep every 20 seconds until you surface One Double Beep Potential Danger Entry into decompression Partial pressure of oxygen equal to or greater than 1 40 ATA Continuous One Beep per Second Immediate Danger Ascent to a depth shallower than a required stop depth Ascent rate that exceeds 60 ft min 18 m min Partial pressure of oxygen equal to or greater than 1 60 ATA Oxygen accumulation greater than the allowed per dive or 24 hour limit R1 Single Long Beep Permanent Violation Depth was shallower than a required stop depth for more than 5 minutes Required Decompression exceeds a 60 FT 18 M ceiling Five minutes after a conditional violation on the surface Short Beep Transition To indicate that a command has been accepted Immediately following activation and the Diagnostic Mode BACKLIGHT FEATURE The Atmos Pro Aeris 300G backlight illuminates the upper and lower screens of the computer module Fig 13 and the pressure gauge of the Aeris 300G To activate the backlight while in the Surface mode or Time Date mode or w
5. lt lt 83006 amp ATMOS Pro OWNER S GUIDE Disthnguished by design Atmos Pro Aeris 300G RESPONSIBLE COMPUTER DIVING Always Plan Each Dive Always Limit Your Dive to the Level of Your Training and Experience Always Make Your Deepest Dive First Always Make The Deepest Part of Every Dive First Check Your Computer Often During the Dive Do A Safety Stop on Every Dive Allow Adequate Surface Interval Between Each Dive Allow Adequate Surface Interval Between Each Day of Diving 12 Hours or Until Your Computer Clears Read And Understand This Owner s Guide Thoroughly Before Using the Atmos Pro or Aeris 300G errs Pay special attention to items marked with this Warning symbol A WARNINGS The Atmos Pro and Aeris 300G are intended for use by recreational divers who have successfully completed a nationally recognized course in scuba diving and diving with enriched nitrogen oxygen nitrox mixtures It is intended only for no decompression diving NOT intentional decompression diving It must not be used by untrained persons who may not have knowledge of the potential risks and hazards of scuba diving and diving with enriched nitrogen oxygen nitrox mixtures You must obtain scuba certification and certfication in diving with enriched nitrogen oxygen nitrox mixtures before using the Atmos Pro or Aeris 300G if you have not already done so Itis NOT for use by military and commercial divers It should NOT
6. 55 Bers Flashing Fig 58 Delayed Violation gt 60 FT ceiling required 56 As previously described you would then need to follow the ceiling stop depths and times toward the surface as the Nitrogen Bar Graph recedes into the yel low Caution zone Upon reaching zero Total Ascent Time Remaining you should continue decompressing until the bar graph segments are well inside of the green No Decompression zone The Aeris 300G will emit one long beep then continue to beep once per second until you descend below the required ceiling stop depth 2 Your necessary decompression requires a ceiling stop depth be tween 60 feet 18 meters and 70 feet 21 meters In this situation the Nitrogen Bar Graph will flash Fig 58 The Aeris 300G will emit One Long Beep Total Ascent Time needed to get back to the surface will still be displayed numerically in the Main Time display To get back to the surface you must safely ascend to just deeper than 60 feet 18 meters staying as close to 60 feet 18 meters as possible without causing the Total Ascent Time display to flash After waiting until the required ceiling stop depth display indicates 50 FT 15 M you can ascend to but no shallower than 50 feet 15 meters and continue decompressing As the required ceiling stop depth display indicates 40 FT 12 M 30 ft 9 M 20FT 6 M and then 10 FT 3 M you can ascend to but no shallower than the reguired ceiling stop depth indicated
7. gency decompression is made If you re not careful it is possible to enter decompression rapidly whether at deep depths or during repetitive dives Upon entering decompression you must immediately change the focus of your dive to getting safely back to the surface Upon seeing the Nitrogen Bar Graph enter the red Decompression zone you should immediately begin a safe con trolled ascent 60 feet 18 meters per minute or slower to a depth slightly deeper than or equal to the required ceiling stop depth indicated Fig 51a and decompress for the time indicated Fig 51b If you continue the dive at a depth more than a few feet 1 meter deeper than the required ceiling stop depth your exposure to decom pression sickness will increase and you will risk entering violation mode and losing the information needed to ascend properly NITROGEN BAR GRAPH CAUTION ZONE Your divetraining taught you not to get too close to the No Decompression Limits The yellow Caution zone of the Nitrogen Bar Graph Fig 52 offers you a convenient way to consistently monitor how close you are coming to the No Decompression Limit Aeris suggests always leaving the water with the Nitrogen Bar Graph in the green No Decompression zone WARNING Never exit the water with the Nitrogen Bar Graph in the red Decompression zone Doing so greatly increases the risk of decompression sickness and may result in injury or death Body metabolism varies from person to
8. Atmos Pro Aeris 300G After Total Ascent Time reaches zero and the Nitrogen Bar Graph recedes into the yellow Caution zone you can surface However to add a greater mar gin of protection Aeris strongly recommends that you wait until the segments of the Nitrogen Bar Graph are well within the green No Decompression zone unless a low tank pressure condition reguires you to surface 3 You descend deeper than 330 feet 99 5 meters NOTE Aeris reminds you that the Atmos Pro Aeris 300G is in tended for no decompression diving at depths within 130 feet 39 meters Expanded capabilities of the unit are provided as safety features to assist you with emergency situations Flashing Flashing Upon descending deeper than 330 feet 99 5 meters the Nitrogen and O2 Bar Graphs will flash and the Current Depth and Maximum Depth displays will only indicate the letters oor Fig 59 until ascent is made to a depth shallower than 330 feet 99 5 meters at which time the Current Depth display will be restored Max Depth will continue to display oor Exceeding the maximum operating depth is described in more detail on page 60 of this section Five minutes after reaching the surface from a dive in which a De ees layed Violation occurred the Atmos Pro Aeris 300G will enter an lm Fig 59 Delayed Violation mediate Violation Mode and revert to Gauge Mode for 24 hours depth gt 330 ft 99 5 m 57 errs Flashing Flashing CETHE
9. Fig 60 Immediate Violation 58 Gauge M ode IMMEDIATE VIOLATION MODE WARNING The Atmos Pro Aeris 300G enters Immediate Viola tion Mode when a situation totally exceeds its capacity to pre dict an ascent procedure These dives represent gross excur sions into decompression that are beyond the boundaries and spirit of the unit s design If you are following these dive pro files Aeris advises you not use an Atmos Pro or Aeris 300G dive computer Immediate Violation M ode occurs when a Decompression Stop depth much greater than 60FT 18M is required This situation would be pre ceded by entering the Delayed Violation M ode previously described The unit cannot accurately calculate decompression times for stop depths much greater than 60FT 18M and offers no indication of how much time spent underwater would result in the need for greater than a 60 FT 18 M de compression stop depth If a ceiling much greater than 60FT 18M isre quired an Immediate Violation Mode Fig 60 will be entered The Aeris 300G will emit a Single Long Beep This situation would be preceded by enter ing Delayed Violation Mode previously described The unit would then oper ate with limited functions Current Depth Max Depth and Elapsed Dive Time in Gauge Mode during the remainder of that dive and for 24 hours after surfacing Atmos Pro Aeris 300G GAUGE MODE Flashing Flashing Underwater the Gauge Mode is a continuation of the Immediate
10. Of OXyJe Meisa ienet kra is arkos a di a i aa sa 62 High PO2 Dive Mode A 62 Oxygen Accu mulao wis re ike an ke a sa aaa a 63 High Oxygen Accumulation 0 cccceceeeeeeneeeceeeeeeeeeeeceaeeeeeaaeeeeeeeesaaeeeseeeeetaeeseenees 64 Atmos Pro Aeris 300G eris CONTENTS continued Unexpected Loss of Displayed Information sssssesssessssrrrsseirrnesrssnnssrrenrsnsrnnnsnsnns 65 CARE amp MAINTENANCE 0 cccseeeeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeeseeeeeeeeeeeeees 67 Gare and Cleaning WEE 68 Annual Inspections A Service ccccccececeeeeeeeeeeeeeeeeaaeeeeeeeeeeaaeeeceeeeeesaeeeseaeeeseaeeeseneees 69 How to Obtain Service EE 70 Batory LITE ercan o i vas a is as sa Ss a aa i ii aa 71 Low Battery Enn Akiskanssiksasikas sunus niai ps is a sa as ik 72 Module Removal from Boot 73 Battery une TEE 74 Suel NET 76 Returning Module to WEE 77 REFERENCE sissss sksaskis assiniasoiasdiiiiss isusisasassii ska sis da iai is a ii 79 More About Flying After Diving ccceeeeeceeeeeeeeeneeeeeeeaaeeeeeeeaaeeeeeeeeaaeeeeeeeaaeeeeneenaees 80 More About Altitude DIVING sorgrassres tesies anas saaa a anas aaa aaa a anas aaa 81 More About Nitrox DIVING sessen aaaa anas aa aa aaa aaa aaa 83 Multiple TiSSU6 TFAGKIN L sis ui sielas kai i L ik r a a eddE KE 84 No Decompression LIMItS cceeeeseceeeeeecteeeeeeeeeeeeeeeaaaeeeeeeeaaeeeeeeeeaaeeeeeeeaaeeeeeeeaaees 86 Repetitive Decompression DIVING ceceeeeeeeeeeee eee eeeeea
11. Fig 6 is provided to help you avoid excessive as cent rates by providing a visual representation of ascent speed rather than just showing that you are ascending too fast The Ascent Rate Indicator has been granted U S Patent no 5 156 055 Atmos Pro Aeris 300G The5 triangular segments of the bar graph may be considered an ascent rate speedometer Green is a normal rate yellow a caution rate and redis Too Segments Speed rate i 0 0 20 fpm 0 6 mpm Fast The actual speeds represented are shown at the right 1 21 30 fpm 6 5 9 mpm 2 31 40 fom 9 5 12 mpm When your ascent rate exceeds the maximum recommended rate of 60 feet 18 32 41 50 e 125 15 a meters per minute the bar graph segments will enter the red Too Fast zone 4 51 60 fpm 15 5 18 mpm and all 5 segments will flash once per second until your ascent speed is slowed 5 61 fom 18 5 mpm When this occurs you should immediately slow your ascent when 5 all will flash ALPHA NUMERIC DISPLAYS Depth Displays During a dive the Current Depth display Fig 7a indicates deoths from 0 to 330 feet 99 5 meters in 1 foot 5 meter increments The value of current depth will be displayed during all dive modes unless you descend deeper than 330 feet 99 5 meters at which point the display will show the letters oor to indicate that you have gone ot of range This is de scribed in detail in the Handling the Extremes section A second
12. Right button until the desired rate appears options 2 FT 5M 5FT 1 5M 10 FT 3 M 30 SEC 60 SEC 180 SEC depress the Advance Left button once to revert to the Surface Mode EXTERNAL ACCESS EA MODE Although this mode Fig 24 is within the sequence of settings it does not have any set points or selections The mode provides user access to the PC download feature that is described in the Post Dive Mode section of this guide Also the factory uses it to access diagnostic and calibration information Atmos Pro Aeris 300G Fig 24 EA Mode 23 errs SUMMARY OF SET MODE SEQUENCE To access a specific set mode from the Surface Mode press both buttons simultaneously and mo mentarily for less than 4 seconds then press the Advance Left button the number of times in dicated below MODES FO2 Default On Off Audible Alarm On Off Units I mperial Metric EA external access Date year month day Time hours minutes Dive Profile Sampling 24 ATMOS PRO n a 3 4 5 6 7 AERIS 300G 4 5 6 7 8 PRE DIVE and Bers Fig 25 FO2 Set for Air 26 OPERATIONAL MODES The Diagnostic Surface and Set Modes were explained in the previous section Activation and Setup This section describes other modes that the Atmos P ro Aeris 300G operates in before and during a dive FO2 MODE WARNING The percentage of oxygen FO2 in the nitrox mix being used must be set before each nitrox
13. Violation Mode that turns the unit into a digital instrument without any decompression or oxygen monitoring functions Dive Time Remaining will not be displayed and the Nitrogen and O2 Bar Graphs will flash as a warning of this condition Fig 61 After surfacing Gauge Mode does not provide the Dive Planner Timeto Fly or Desaturation features During the first 2 hours Surface Mode will display f the surface interval dive number and temperature as the bar graphs flash to Fig 61 Gauge Mode indicate that a violation occurred The countdown timer that appears when underwater the Advance Left button is depressed does not represent Time to Fly Itis only provided to inform you of the time remaining before normal operation can resume with full features and functions of the unit Two hours after the dive 22 00 will be displayed Fig 62 with a single dash NOTE A full 24 hour surface interval must be served before the Atmos Pro Aeris 300G will reset automatically and provide normal decompression and oxygen monitoring functions If a dive is made within the 24 hour period the Atmos Pro Aeris 300G will operate in Gauge Mode only for that dive and the full 24 hour surface interval will have to be served Fig 62 Countdown 2 hours after surfacing 59 Bers Flashing Flashing 60 Fig 63 Out of Range depth gt 330 ft 99 5 m PERMANENT VIOLATION Entering the Immediate Violation Mode then Gauge Mode will
14. be utilized for any competitive or repetitive square wave or decompression diving as it is intended solely for recreational use and no decompression multilevel diving As with all underwater life support equipment improper use or misuse of this product can cause serious injury or death Never participate in sharing or swapping of a dive computer Conduct your dives in such a manner so as to insure that you continuously check the computer s proper function Read and understand this owner s guide completely before diving with the Atmos Pro or Aeris 300G If you do not fully understand how to use this dive computer or if you have any questions you should seek instruction in its use from your authorized Aeris dealer before you utilize this product Atmos Pro Aeris 300G LIMITED TWO YEAR WARRANTY Aeris guarantees to the original purchaser only that the Atmos Pro or Aeris 300G will be free of defects in materials and or craftsmanship under normal recreational multilevel scuba use for two years from date of purchase provided proper care and annual service are performed as described within this owner s guide Should your Atmos Pro or Aeris 300G prove to be defective for any reason other than those listed in the limitations section below it will be repaired or replaced at Aeris discretion free of charge excluding shipping and handling charges Thiswarranty will beconsidered void if theregistration cardisnot filled out completely at
15. ceiling stop depth watching the Atmos Pro Aeris 300G closely when managing decompression The Total Ascent Time display will flash until you descend below the required decompression ceiling stop depth The Aeris 300G will beep once per second Atmos Pro Aeris 300G If you descend below the reguired decompression ceiling before 5 minutes have elapsed the unit will continue to function as if no violation had occurred In this case no off gassing credit will be given and for each minute above the ceiling Ui minutes of penalty time is added to decompression stop time The added penalty decompression time will have to be worked off first before obtaining off gassing credit Once the penalty time is worked off and off gas sing credit begins required decompression stop depths and time will decrease toward zero and the Nitrogen Bar Graph will recede into the yellow Caution zone Upon entry into the Caution zone the unit will revert to the No Decom pression Dive Mode Flashing If you stay above shallower than the required ceiling stop depth for more than 5 minutes the Nitrogen Bar Graph segments will flash and the unit will enter the Delayed Violation Mode DELAYED VIOLATION MODE Three conditions will cause the Atmos Pro Aeris 300G to enter the Delayed Violation Mode 1 You remain above the required Decompression Ceiling Stop Depth a for more than 5 minutes Fig 57 Fig 57 Delayed Violation above ceiling gt 5 min
16. could lead to inaccurate and po tentially dangerous predictions of decompression and oxygen accumulation status This rule is especially important when using the Atmos Pro Aeris 300G due to the personal information it provides Graphic Interface Legend E SEELEN Atmos Pro Aeris 300G Nitrogen Bar Graph Ascent Rate Indicator Oxygen 02 Bar Graph Icon Operating Mode detail A Icon Elapsed Dive Time Icon Deco Stop Ceiling Icon Audible Alarm Aeris 300G only Icon Log Mode Icon Low Battery Control Button Select Control Button Advance Interface Sensors Detail A Operating M ode I cons pop 8X V od 1 Surface Mode kd Plan Mode No Decompression Dive Decompression Dive s A H Ko OTIN flashing 2 15 Bers This page intentionally left blank 16 Atmos Pro Aeris 300G ACTIVATION and SETUP Bers CELE ETS Fig 15 Diagnostic Mode 18 ACTIVATING THE DISPLAY WARNING Never attempt to activate the Atmos Pro Aeris 300G underwater This may result in inaccurate depth and no decompression time displays If the unit is activated when deeper than 4 feet 1 meter underwater or at elevations higher than 14 000 feet 4 267 meters it will perform a diag nostic check followed by immediate shutdown To activate the unit press the Select Right button once and release It will immediately enter Diagnostic Mode displaying all 8 s Fig 15 followed by
17. dive unless the FO2 default feature has been turned oft The Atmos Pro Aeris 300G can be used either as an Air computer or as a Nitrox computer After activation it will operate as an Air computer without displaying information associated with oxygen calculations unless it is set for a percentage of oxygen F O2 other than Air numerical value between 21 and 50 FO2 Set for Air If you are using Air as your breathing gas you can verify that Air is the FO2 value by pressing the Advance Left button twice to access the F O2 screen Fig 25 When set with an FO2 value of Air the Atmos Pro Aeris 300G will perform calculations the same as if FO2 were set for 21 oxygen internally accounting for oxygen loading for any subsequent Nitrox dives However oxygen related displays warnings and the O2 bar graph will not appear on the display for that dive Fig 26 or subsequent dives unless F O2 is set for a numerical value 21 to 50 Setting FO2 for a Nitrox Dive You can program the Atmos Pro Aeris 300G for nitrogen oxygen nitrox mix tures of 21 to 50 oxygen O2 before each nitrox dive If FO2 is set at a value of 21 the unit will remain set as a 21 nitrox computer for subse quent nitrox dives until FO2 is set to a higher value or until it automatically turns off and is reactivated Once F O2 is set to a value greater than 21 to match the nitrox mix being used for that nitrox dive the FO2 value displayed d
18. dive using your Atmos Pro Aeris 300G keep these basic rules in mind Plan each dive and dive your plan Your computer was not designed to make decisions for you only to provide you with the information you need to make responsible decisions for yourself This begins with a dive plan that will help you avoid a low air or decompression situation Do not plan any dive that exceeds your training or experience level Inspect your computer before every dive If it shows any signs of damage or abnormal function DO NOT dive with it until it has received factory service Make your deepest dive first When making repetitive dives it is imperative to ensure that each con secutive dive is shallower than the one before This will allow your body s slower tissues to continue out gassing nitrogen Make the deepest part of your dive first and gradually work your way to the surface using a staircase profile The ability to perform multilevel diving is one of the most important contributions of a dive computer and you should take advantage of it It will increase your bottom time and at the same time decrease your risk of decompression sickness Ascend slowly by following an ascent line whenever possible or by ascending diagonally to ward the surface Watch the Ascent Rate lindicator closely while you ascend and keep it in the green zone as much as possible Make a safety stop at 15 20 feet 4 5 6 m at the end of every dive A safety stop of aslitt
19. or applied for to protect the following design features Dive Time Remaining U S Patent no 4 586 136 Data Sensing and Processing Device U S Patent no 4 882 678 Nitrogen Bar Graph U S Patent no 4 882 687 and Ascent Rate Indicator U S Patent no 5 156 055 DECOMPRESSION MODEL The programs within the Atmos Pro Aeris 300G simulate the absorption of nitrogen into the body by using a mathematical model This model is merely a way to apply a limited set of data to a large range of experiences The Atmos Pro Aeris 300G dive computer model is based upon the latest research and experiments in decompression theory Still using the Atmos Pro Aeris 300G just as using the U S Navy or other No Decompression Tables is no guarantee of avoiding decompression sickness i e the bends E very diver s physiology is different and can even vary from day to day No machine can predict how your body will react to a particular dive profile vi Atmos Pro Aeris 300G CONTENTS FEATURES AND DISPLAYS isiuizisskokiasi ssiinaikianasasaskkukan sand sak kissa 1 eiin a Ted 2 GOmtrol BUULOINS PAE TE ais a a E A aa E DA 4 Informational DISpPIayS cenlo i aia a ee eee a 5 RENEE EN oa EE E A E ee ohare Sa Saso adap ssh chet kh een okie sed 6 Nitrogen Bar OAD Stot zgeeiep eent Vanagai ia ss skir an a k rs k a o ass 6 Oxygen 02 Bar Graphie 7 Ascent Rate Indicators aist ais eat ais a es a i Ala i 8 Alpha Numeric Displays 0 ccccceeeee
20. possible WARNING If you exceed certain limits the Atmos Pro Aeris 300G will not be able to tell you how to get safely back to the surface These situations exceed tested limits and can result in loss of some of the unit s functions for 24 hours after the dive in which a violation occurred Atmos Pro Aeris 300G Fig 55 Managing a Required Stop 53 Bers Flashing i a Fig 56 Conditional Violation above ceiling stop depth 54 VIOLATION MODES The Violation Modes that the Atmos Pro Aeris 300G can enter depending on the situation are termed Conditional Delayed and Immediate Gauge Mode and Permanent Violation Mode are continuations of these Violation Modes It is important to understand each different Violation Mode and how to carry out emergency procedures in the event you enter one CONDITIONAL VIOLATION MODE The Atmos Pro Aeris 300G will alert you to the possibility of losing decompres sion management abilities by entering the Conditional Violation Mode If properly handled the Conditional Violation Mode can assist you in getting back to the surface and allow continued use of the unit The unit will enter the Conditional Violation Mode if you ascend shallower Fig 56a than the required decompression ceiling indicated by the Required Stop Depth displayed A momentary rise above the ceiling such as with a surge or swell could cause this to happen Therefore you should stay slightly deeper than the exact
21. readings 96 Atmos Pro Aeris 300G THE CODE OF THE RESPONSIBLE DIVER AS ARESPONSIBLE DIVER I UNDERSTAND AND ASSUME THE RISKS I MAY ENCOUNTER WHILE DIVING RESPONSIBLE DIVING BEGINS WITH DIVING MTHIN THE LIMITS OF MY ABILITY AND TRAINING e EVALUATING THE CONDITIONS BEFORE EVERY DIVE AND MAKING SURE THEY FIT MY PERSONAL CAPABILITIES BEING FAMILIAR WITH AND CHECKING MY EQUIPMENT BEFORE AND DURING EVERY DIVE KNOWING MY BUDDY S ABILITY LEVEL AS WELL AS MY OWN e ACCEPTING THE RESPONSIBILITY FOR MY OWN SAFETY ON EVERY DIVE 97 2002 Design 1997 Doc No 12 7014 R1 8 98
22. that these built in capabilities provide any implied approval or consent from Aeris for individuals to exceed the defined limits of recreational dive profiles as agreed on by all internationally recognized training agencies Decompression diving should therefore be strictly avoided The Atmos Pro Aeris 300G is designed to help you by providing a complete repre sentation of how close you are to entering decompression In the event that you do inadvertently enter decompression as indicated by the large red seg ment of the Nitrogen Bar Graph Fig 50 the Atmos Pro Aeris 300G can pro vide you with limited information to help you ascend to the surface Aeris strongly recommends that you avoid entering decompression and reminds you that decompression diving requires special training The Atmos Pro Aeris 300G cannot provide you with a backup breath ing gas supply for emergencies or the ascent line you will need and decompression diving greatly increases your risk of decompression sickness Atmos Pro Aeris 300G Decompression Zone Fig 50 Decompression Mode entering into 49 Bers Fig 51 Decompression Stop 50 WARNING Existing data for making planned decompression dives is extremely limited and virtually nonexistent for repeti tive decompression diving You must therefore avoid decom pression diving and allow a surface interval of at least 24 hours before reentering the water in the event a dive requiring emer
23. 2 level while you re duce oxygen partial pressure according to your training High PO2 Dive Mode The unit enters the High PO2 Dive Mode when partial pressure of oxygen be comes equal to or greater than 1 40 ATA The current PO2 value and the sym bol PO2 will appear in the lower screen in place of Max Depth and Elapsed Dive Time Fig 64 The Aeris 300G emits a double beep The PO2 display will remain on the screen until PO2 decreases below a value of 1 40 ATA If partial pressure of oxygen continues to increase the value of PO2 displayed will increase from 1 40 toward a value of 5 00 ATA in increments of 01 ATA When PO2 reaches the maximum allowed limit of 1 60 ATA the large red seg ment of the O2 bar graph the PO2 value and PO2 symbol will flash continu ously as a warning Fig 65 until the level of PO2 decreases below 1 60 ATA The Aeris 300G emits one beep per second In the event that you enter High PO2 Dive Mode you must immediately focus on reducing the partial pressure of oxygen by slowly ascending to a shallower depth at a safe ratein accordance with your nitrox training If you continue the dive at your current depth or descend deeper your exposure to CNS oxygen toxicity will increase OXYGEN ACCUMULATION It is also important that you understand that conducting repetitive dives using enriched nitrogen oxygen nitrox mixtures can lead to oxygen buildup reduc ing oxygen tolerance while increasing the risk of pulm
24. ERFORMANCE starting 10 min after the dive Function Accuracy BAR GRAPHS Depth 1 of full scale Timers 1 second per day Nitrogen Bar Graph segments No Decompression zone green 9 Dive Counter No Deco Caution zone yellow 2 Displays Dives 1 2 3 4 5 6 7 8 9 O continues 1 to 0 Decompression Warning zone red 1 Displays 0 for dives 10 20 30 etc Resets to Dive 1 upon diving after midnight new date Oxygen 02 Bar Graph segments Normal zone green 9 Dive Log Mode Caution zone yellow 2 Stores 12 most recent dives in memory for viewing Danger zone red 1 After 12 dives adds 13th dive in memory and deletes the first dive Each nitrox dive displays a Nitrogen and Oxygen Log screen 89 Bers SPECIFICATIONS continued OPERATIONAL PERFORMANCE continued Altitude Recalibration of depth readings from feet of sea water to feet of fresh water Operational from sea level to 14 000 feet 4 267 meters elevation when higher than 2 000 feet 610 meters elevation Power Batteries 2 3 volt lithium CR2032 or equivalent Shelf life Upto 10 years Replacement User replaceable annual recommended Life expectancy 50 24 hour periods of activation time approximate Number of dives variable Activation S Manual push button cannot be activated by water immersion Cannot be activated deeper than 4 feet 1 5 m Cannot be activated at elevations high
25. Limits may be less you will receive increased 130 39 10 11 10 allowable bottom times as you take advantage of the multilevel 140 42 9 9 10 dive capabilities offered by the Atmos Pro Aeris 300G Notice also 150 45 8 8 5 that the Dive Planner does not scroll past 160 feet 48 meters 160 48 7 7 5 170 51 rr 5 180 54 s 5 REPETITIVE DECOMPRESSION DIVING 190 57 rr 5 The Atmos Pro Aeris 300G will not scroll past The decompression model used by the Atmos Pro Aeris 300G is Ce ee Ee GER bottom based on the no decompression multilevel repetitive dive schedules i successfully tested by Dr Ray Rogers and Dr Michael Powell Fig 76 No Decompression Limits These tests did not include repetitive dives deeper than 90 feet 27 meters or decompression dives Due to the present unavailability 86 of statistical data Atmos Pro Aeris 300G decompression predictions are based on U S Navy theory Therefore pay special attention to the following warn ings WARNING Aeris advocates responsible diving practices and does not recommend decompression diving or diving below 130 feet 39 meters The decompression capabilities of the Atmos Pro Aeris 300G are intended strictly for emergency use De compression diving is inherently hazardous and greatly in creases your risk of decompression sickness even when per formed according to the computer s calculations In the event that you must make an emergency decompression dive you must
26. ND CLEANING The Atmos Pro Aeris 300G is a sensitive electronic instrument Although it has been designed to withstand the rigors of diving it still must be handled carefully to protect from shock excessive heat chemical attack and tamper ing The housing is made of an impact resistant resin that is extremely shock resistant but is susceptible to chemical attack and scratches CAUTION Never spray aerosols of any kind on or near an Aeris instrument The propellants may chemically attack the plastic If the transparent face becomes scratched Aeris can replace it although small scratches will naturally disappear underwater For even more convenience and additional protection against scratches place a transparent Aeris Instru ment Lens Protector on the gauge faces These and other special accessories can be purchased from your Authorized Aeris Dealer BEFORE A DIVE Be careful not to place the instrument s in an unsupervised unprotected oca tion where it might be damaged Many dive computers and dive trips are ru ined due to carelessly tossed weight belts or cylinders AFTER ADIVE Soak and rinse the unit in fresh water following each dive and check the low pressure sensor guard cap to ensure that it is free of any debris or obstruc tions If possible use lukewarm water to dissolve any salt crystals Salt depos its can also be dissolved using a slightly acidic vinegar water bath After re moval from a fresh water bath pla
27. Pro or 3 times Aeris 300G Theletters EA appear Fig 49 Torevert to the Surface mode press the Advance Left button 1 time or e Toinitiate a download operation press the Select Right button 1 time e Theletters EA begin flashing and the download operation begins As data is being downloaded to the PC all of the LCD segments will be displayed After completion of a successful download operation the unit will revert to the Surface mode If the letters EA continue to flash it is an indication that a connection has not been made Refer to the instructions provided in the User Manual for the Dive Fig 49 EA Mode Downloader DDA package 45 SUMMARY OF POST DIVE MODES MODES TO ACCESS TO SET VVIEW Backlight Right 1 time Time Date Left T time FO2 set Left 2 times Right hold or repetitive Fly Desaturate Left 3 times Dive Planner Left 4 times Right hold or repetitive Log Mode Left 5 times Right hold or repetitive Set Mode Both 1 time Refer to page 26 of this Guide EA Mode Atmos Pro Both 1 time Left 2 times Right T time EA Mode Aeris 300G Both 1 time Left 3 times Right 1 time After the first 2 hours the unit will remain in the Fly Mode To access other Modes press the Select Right button to return to the Surface Mode then press the Advance Left button 46 Atmos Pro Aeris 300G HANDLING THE EXTREMES errs 48 EMERGENCY DECOMPRESSION There a
28. aes 31 Ascending to the Surface esseseeeeensesrneesnesnrtneetttetsteessrnsstnnsstnnsnnssennsnnnnenn nennen at 33 Altitud DIVING BEE 34 POST DIVE MODES isicicscecacses cade acnenecechinansnadinancsannarsuadiasnattecccececevanseny 37 Post Dive Surface Mode AAA 38 TRANSITION PMO WEE 38 CONTENTS continued FO2 Mode zais sn iai Eege 39 R1 Time to Fly and Desaturate ccccececcccceeesecceeeeeeeeceeeeeeseeceeeeesseceeeeenseeeeeerenseeeeenentaes 40 AVC ED 42 Dive e NEE 42 External Access Modo Sierrei oo a E E AREER 45 Summary of Post Dive Modes cesses cece eeseaaeseceeeseaaeseeneeeeeaeeseeeeeess 46 HANDLING THE EXTREMES wacccccscicccecnsssccsctenineinacsecesnsccencssnsasnsac 47 Emergency Decompression ccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaeeeeeeseaeeeeeeteneaeeeeeeenaaeeees 48 Nitrogen Bar Graph Caution Zone cccseceeececeeeeeeeeeeeeeeeaeeeeeeeeecaeeeseneeeseeesseneees 51 Decompression Dive MOde eeececceeeeenneeeeeeenaeeeeeeeaaeeeeeeeaaaeeeeeeeaaeeeeseeeaaeeeeeeeaaas 51 Violation e EE 54 Conditional Violation Mode cc cccseeeceeeeeeeeceeeeeeeeeccaeeesenseeseaeeeseaaeeseeeeeeaeeeeaes 54 Delayed Violation Mode arare ntaa a Eaa EEEa AEE EEKE EENE AKSARA 55 Immediate Violation Mode A 58 Gauge Mode ET 59 Permanent Violation i sienas en E a E A ER ETSN 59 Exceeding Maximum Operating Depth ssssesssssesesesseessissrisssisssrrssrrnsstrnnrnsntnnennnne 60 OXyden EXDOSUC ege A T 61 Partial Pressure
29. and retailers makeno warranties either expressed or implied with respect tothis product or its owner s guide except those stated in the preceding paragraphs In consideration of the sale of the Atmos Proor Aeris 300G to you you agree and understand that in no event will Aeris its distributors or retailers be held liable for any personal injuries resulting from its operation or for any other damages whether direct indirect incidental or consequential even if Aeris is advised of such damages Warranty does not extend to plastic gauge face o rings batteries or damage due to accident abuse modification or tampering Some states do not allow the exclusion or limitation of implied warranties or liabilities for incidental or consequential damages so the above limitation may not apply to you eris COPYRIGHT NOTICE This owner s guide is copyrighted all rights are reserved It may not in whole or in part be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form without prior consent in writing from Aeris 2002 Design Atmos Pro Aeris 300G Owner s Guide Doc No 12 7014 2002 Design 1997 2002 Davis Street San Leandro Ca USA 94577 510 569 3100 TRADEMARK NOTICE Aeris the Aeris logo Atmos Pro Aeris 300G the Atmos Pro logo and the Aeris 300G logo are all registered and unregistered trademarks of Aeris All rights are reserved PATENT NOTICE U S Patents have been issued
30. aximum PO2 level reached during that dive and PO2 symbol O2 bar graph showing oxygen loading at the end of the dive press the Select Right button repeatedly to proceed through the previous recorded dives During the first 2 hours after a dive after the 10 minute Transition Period R1 the Dive Log can be accessed by depressing the Advance Left button 5 times while in the Surface Mode Two hours after the dive while the Time to Fly and Desaturation countdowns are being displayed continuously access is gained by first depressing the Select Right button to return to Surface Mode To exit Log Mode at any time and return to the Surface Mode Fig 48 Log Mode press the Advance Left button third screen oxygen 44 R1 Atmos Pro Aeris 300G EXTERNAL ACCESS EA MODE Using special infrared linking hardware and a unique PC software program data can be downloaded copied into an IBM compatible PC program running on a Windows 95 operating system Instructions for performing the interface and download are provided with the Dive Downloader DDA hardware soft ware package available separately from your Authorized Aeris Dealer The software program provides dive profile data and nitrogen and oxygen loading throughout the dive To enter the External Access Mode while in the Surface Mode depress both control buttons simultaneously for less than 4 seconds depress the Advance Left button 2 times Atmos
31. c Pre Dive mode from the Surface Mode press the button s as follows MODES TO ACCESS TO SET VVIEW Backlight Right 1 time Time Date Left 1 time FO2 set Left 2 times Right hold or repetitive Dive Planner Left 3 times Right hold or repetitive Log Mode Left 4 times Right hold or repetitive Set Mode Both T time Refer to page 24 of this Guide During the No Decompression Dive Mode press the button s as follows MODES TO ACCESS Backlight Right 1 time Temperature Left 1 time 36 Atmos Pro Aeris 300G POST DIVE MODES Bers 38 Fig 38 Surface Mode less than 10 min POST DIVE SURFACE MODE When you ascend to 3 feet 1 meter or shallower the Atmos Pro Aeris 300G will enter Surface M ode Fig 38 and begin counting your surface interval TRANSITION PERIOD The first 10 minutes is in affect a transition period during which time The Surface Mode icon will appear flashing The number of that dive appears in the upper portion of the screen The main time display starts counting Surface Interval colon flashing Ambient Temperature appears in the lower screen e The Nitrogen Bar Graph indicates current nitrogen loading e TheO2 Bar Graph will indicate current oxygen loading if that was a nitrox dive F O2 set for a numeric value e Toactivate the backlight press the Select Right button e To view the Date Time for 5 seconds press the Advance Left button Toaccess the Lo
32. ce the unit under gently running water and towel dry before storing Transport your unit cool dry and protected WARNING Never under any circumstances poke any object through any slots or holes of the instrument s Doing so may damage the depth sensor possibly resulting in erroneous depth and or dive time remaining displays ANNUAL INSPECTIONS AND SERVICE Your Aeris instruments should be inspected annually by an Authorized Aeris Dealer who will perform a factory prescribed function check and inspection for damage or wear To keep the 2 year limited warranty in effect this inspection must be completed one year after purchase 30 days Aeris recommends that you continue to have this inspection performed every year to ensure your unit is working properly A convenient service record is provided in the back of this owner s guide This should be signed by the service technician after each annual inspection or factory service Atmos Pro Aeris 300G 69 R1 errs Aeris Customer Service 14212 Doolittle Dr San Leandro Ca 94577 510 346 0010 8to5 PST Fax 510 346 0015 Website HTTP WWW diveaeris com Ne E mail info diveaeris com N By 70 The costs of annual inspections are not covered under theterms of the 2 year limited warranty WARNING If you are in doubt about the accuracy of your Atmos Pro Aeris 300G depth readings DO NOT attempt to dive with it until it has been inspected by Aer
33. depth display Fig 7b indicates the Maximum Depth reached dur f ing that dive In the event that you descend deeper than 330 feet 99 5 Fig 7 Depth Displays meters this display will only show the letters oor as the maximum depth for No Decompression Dive 9 10 mot Da pe XX RC Fig 8 Depth Displays Decompression Dive Fig 9 Time Displays the remainder of that dive and as the Max Depth in the Dive Log for that dive This is described in detail in the Handling the E xtremes section During a Decompression Dive the required Ceiling Stop Depth replaces Maximum Depth Fig 8a Maximum Depth can be viewed by depressing the Advance left control button This is described in detail in the Handling the Extremes section Time Displays The Main Time display Fig 9a indicates elapsed Surface Time theoretical Dive Time Available Dive Time Remaining Total Ascent Time required Time to Fly or Time of Day depending on the operating mode that the unit is in A second time display Fig 9b indicates Elapsed Dive Time Decompression Stop Time required at a specific stop depth or Time to Desaturate depending on the operating mode that the unit is in Each display is described in detail in subsequent sections of this owner s guide Time displays are shown in hour minute format e 1 02 represents one hour and two minutes not 102 minutes The colon that separates hours and min utes blinks once per s
34. dive has three log screens The first displays the date time started the second Nitrogen re lated data and the third Oxygen related data If FO2 was set for Air for that dive the O2 screen will only display FOI and Air To access the Dive Log during the 10 minute Transition Period depress the Advance Left button 2 times to view the first screen Fig 46 Log Mode icon Date and Time of Day that the dive started Dive Number 1 through 9 a function of real time the first dive after midnight will be 1 for that calendar day Example If you do a night dive at 10pm no other dive that day then a repetitive night dive at 1am both dives will appear in the log as 1 differentiated by the Date depress the Select Right button 1 time to view the Nitrogen Log Fig 47 Log Mode icon Dive Number Maximum Depth reached for the dive and icon Elapsed Dive Time and icon Atmos Pro Aeris 300G Fig 46 Log Mode first screen date time C 96a BBS Fig 47 Log Mode second screen nitrogen 43 Bers Surface Interval prior to that dive and icon Ascent Rate Indicator showing the maximum ascent rate at any time during the dive Nitrogen Bar Graph showing tissue nitrogen loading at the time you surfaced at the end of the dive depress the Select Right button 1 time to view the Oxygen Log Fig 48 Log Modeicon FO2 value set for that dive and FO2 symbol M
35. e Left button It will re Ab fe place Max Depth and Elapsed Dive Time for depression time plus 3 seconds CET As your depth and elapsed dive time increase the Nitrogen Bar Graph will fill with segments green toward red to represent nitrogen loading and if FO2 was set for a numerical value the 02 Bar Graph will fill with segments green toward red to represent oxygen loading for that dive or 24 hour period which Fig 34 Temperature ever amount is greater Segments of the Ascent Rate Indicator fill and re underwater cede as your ascent rate increases and decreases throughout the dive WARNING Every effort should be made to keep each of the bar graphs in the green throughout your dives to reduce your risk of exposure to decompression sickness and oxygen toxicity DECOMPRESSION DIVE MODE The Atmos Pro Aeris 300G provides information that will help you avoid or if necessary manage emergency decompression Fig 35 Decompression The Decompression Dive Mode activates when the Nitrogen Bar Graph enters Mode the red zone Fig 35a 32 VIOLATION MODES The Atmos Pro Aeris 300G enters various Violation Modes when it is unable to predict an ascent procedure GAUGE MODE If the Atmos Pro Aeris 300G enters a Permanent Violation Mode it will not display information relating to nitrogen or oxygen loading for the remainder of that dive or for subsequent dives conducted during the 24 hour period after surfaci
36. e and insert its tabs into the slots of the boot Install the lower trim piece b Press the module in until the housing is completely seated Position the H frame c over the console with the shafts aligned over the holes and the leg that has a notch d positioned next to the left but ton of the computer Gently press the shafts into the holes until the H frameis completely and evenly seated on the console Secure the H frame with the 2 screws with washers turningthem in a clockwise direction until secure torque of 2 in lbs DO NOT over tighten or attempt to use any other screws Care and maintenance is simple and easy and will help keep your Atmos Pro Aeris 300G in top condition for years of diving enjoyment 78 Atmos Pro Aeris 300G REFERENCE 79 Bers 80 MORE ABOUT FLYING AFTER DIVING In 1990 the Undersea and Hyperbaric Medical Society UH MS published a set of guidelines aimed at minimizing the possibility of decompression sickness due to flying too soon after diving The UHMS suggests divers using standard air cylinders and exhibiting no symptoms of decompression sickness wait 24 hours after their last dive to fly in aircraft with cabin pressures up to 8 000 feet 2 440 meters excerpted from The UHMS Flying After Diving Workshop The two exceptions to this recommendation are If adiver had less than 2 hours total accumulated dive time in the last 48 hours then a 12 hour surface interval bef
37. e diving practices con sistent with your individual level of formal training and experi ence and does not recommend decompression diving or diving below 130 feet 39 m Oxygen 02 Bar Graph NOTE Displays associated with oxygen and the O2 bar graph will only appear if FO2 has been set at a value other than Air Atmos Pro Aeris 300G Bea RESPONSIBLE DIVER at all times Fig 6 Ascent Rate Indicator 8 The O2 Bar Graph Fig 5 represents oxygen loading your relative oxygen tol erance dosage OT U showing the maximum of either per dive accumulated oxygen or 24 hour period accumulated oxygen As your exposure accumula tion of oxygen increases during the dive segments will add to the bar graph and as oxygen loading decreases the bar graph will begin to recede indicating that additional exposure is allowed for that dive and 24 hour period The O2 bar graph also assists you with managing high partial pressure of oxy gen PO2 by flashing the large red Danger zone segment as a warning when the level of PO2 exceeds the maximum allowed limit of 1 60 ATA BAR This is explained in detail in the Handling the E xtremes section Prior to a repetitive nitrox dive if the segments of the Oxygen Bar Graph are displayed while in the Plan mode and no segments of the Nitrogen Bar Graph are displayed that next dive is calculated to be controlled by oxygen loading Ascent Rate Indicator The Ascent Rate Indicator
38. ears on the display Also to avoid any inconvenience that you replace the batteries with new prior to any multi day dive trip that will include a profile of numerous repetitive dives such as multiple days on a liveaboard vessel WARNING Nitrogen and Oxygen calculations will be erased when the batteries are replaced between repetitive dives Also date and time settings will have to be reset Atmos Pro Aeris 300G D MODULE REMOVAL FROM BOOT ATMOS PRO Wrist or Hose Mount Boot peel the lips of the boot downward off the module while applying pressure from underneath working it out slowly Console bend the rubber console boot back to expose the edge of the module If the boot is flexible enough to permit you may bend it back far enough to scoop the module out with your index finger Otherwise it may be necessary to insert a blunt screwdriver until the tip rests just underneath the module DO NOT pry the module from the console Slowly increase the pressure under the module by releasing the tension on the rubber boot The module will slide up the screwdriver and exit the console AERIS 300G Remove the H frame a located between the computer and spg Locate the 2 small screws located on the back of the console Remove the screws with washers by turning counter clockwise Carefully press inward on the 2 shafts that the screws came out of Alternately press one slightly then the other pushing the H frame out and away fro
39. econd when the display is indicating real time such as elapsed Surface Time Elapsed Dive Time and Time of Day Dive Time Avail Atmos Pro Aeris 300G able Dive Time Remaining Decompression Stop Time Total Ascent Time re quired Time to Fly and Time to Desaturate are calculated projections of time and use a solid non blinking colon to indicate that they are counting down rather than up Temperature Display While in the Surface mode Temperature will appear continuously Fig 10a During a dive Temperature is displayed in place of Maximum Depth and Elapsed Dive Time Fig 11a when the Advance left control button is de pressed and for 3 seconds after it is released Temperature is not displayed during the Decompression mode If the Temperature exceeds a value of 99 two dashes will be displayed on the screen until the unit s temperature decreases to 99 Date and Time of Day Display Whilein the Surface mode Time of Day will appear for 5 seconds Fig 12a together with the current Date Fig 12b when the Advance left button is depressed once When Units of Measure are set for mperial the Month ap pears to the left of Day and when set for Metric the Month appears to the right of Day Date and Time are not displayed when the unit is in a dive mode Fig 12 Date Time Surface 11 Bers LA SE SE Low Pressure S Potential Danger pees eo gt Immediate Danger 12
40. eeeeeeeaaaeeeeeeeaaeeeeeeeaaeeeeeeenaees 86 ee e le EE 88 GIOSS LEE 92 Atmos Pro Aeris 300G Service Record 96 Atmos Pro Aeris 300G FEATURES and DISPLAYS Bers CEEREEED INTRODUCTION Welcome to Aeris and thank you for choosing the Atmos Pro dive computer module or Aeris 300G with pressure gauge Your Atmos Pro or Aeris 300G presents the information that you need before during and after your air or nitrox dives using Aeris intuitive combination of easy to read displays and unique identification icons Tissue loading of nitro gen accumulation of oxygen and ascent rate are presented as segmented bar graphs alongside color coded reference indicators that bring quick focus to these important status displays As you progress through this instructional guide you will become familiar with all of the unique functions and features available and see examples of the dis plays that you could expect to see in the various operational modes Although it will require an initial investment of time to become acquainted with the various icons and bar graphs you ll soon agree that your Atmos Pro or Aeris 300G is easy to understand and use The Atmos Pro and Aeris 300G have a wide array of features that are common to both models Additional features that apply only to the Aeris 300G are noted Due to the importance that they be understood thoroughly prior to us ing the units information will be expanded upon and some refreshed as you p
41. eft button to move to the next function depress and hold the Select Right button until the correct year appears depress the Advance Left button once The Month flashes depress and hold the Select Right button until the correct month appears depress the Advance Left button once The Day flashes depress and hold the Select Right button until the correct day appears depress the Advance Left button once The TIME screen will appear with the Hour flashing Fig 22b depress and hold the Select Right button until the correct hour appears depress the Advance Left button once The Minute flashes depress and hold the Select Right button until the correct minute appears depress the Advance Left button once to advance to the Profile Sampling Mode or depress it 2 times to revert to the Surface M ode Fig 22b Set Time 22 SET DIVE PROFILE SAMPLING RATE This setting Fig 23 allows you to select the rate that the Atmos Pro Aeris 300G samples data points for onboard storage and subsequent download to the Dive Downloader DDA PC software program It does not affect the rate that data is sampled for display during operation Factory set for 10 FT 3M To change to your desired rate of sampling after having set the Time as described previously or by depressing the Advance Left control button 8 times Atmos Pro or 9 times Aeris 300G while in the Surface Mode depress and hold the Select
42. eneeeeeeeeeeeeeeeeaaeeeeeeeeaaeeeeeeeaaaeeeeeeeaaeeeeeeeaaeeeeeeeaas 9 Pepih NET 9 Time RIES 10 Temperature Display urias anie kais asian saaa i a eee a aa B a ai 11 Date and Time of Day Display aaa ease kaka saaa aka aaa aaa aaa aaa aaa 11 Pressure Display Aeris 300G only cc ceccseeeeeeeeeeeeeeeeeeeeeeaeeeseneeeseaeeeseeeessaees 12 Audible Alarm Aeris 300G on 12 Backlight Feature a a visi sasas nih Akitos gadina iais a idee tee eve bi aa eee dts 13 Operating Temperature rr 14 Sharing the Atmos Pro Aeris 2000 14 Graphic Interface Legend 15 vii eris viii CONTENTS continued ACTIVATION EE TEE 17 Activating the Display AT 18 S rat MODE EE 19 Entering le 20 Set PO Default Lisinskas sia ks sia ai ls a a a ka i teaches 21 Set Audible Alarm Aeris 300G on 21 S6t UNITS Of Measure weiss di zeg dreeegkebe geeiert i i a alia a KOSAN EEE Ei 21 Set Date Time Ai izkassussssudis danas issiskiria 22 Set Dive Profile Sampling secscess cccccexsacevecit vas siai kui si o ak ai i is 23 PREDIVE amp DIVE MODES Lassisjusaduskinusis sinisskassdisiiniiinnasieskeenessadias 25 Operational Mode cicccie seis yass ina aiaia ainiai daian daia 26 FO2 MOG EE 26 FO2 EOF gesteet o is aaa ss aa a Kaas ees 26 Setting FO2 for a Nitrox Dive cece ce ceeceeeeeeeeeeeaeeeeeeeeeeeaeeeeeeeeesaaeseseeeeesaeeteeeeeeeeas 27 Dive SNE 29 No Decompression Dive Mode ccccccsccceceeeseeeeeeeeeeneeseeeseneeeeeesseeeeeeeenenaeeeeeene
43. er than 14 000 feet 4 267 m N eeded before first dive Automatically shuts off if no dive is made within 120 minutes after initial activation Reactivation required Cannot be shut off manually etting FO2 Automatically set for Air upon activation Remains set for Air unless an FO2 numerical value is set Nitrox set points from 21 to 50 If set for 21 remains set for 21 until changed If set for gt 21 reverts to 50 10 minutes after the dive however if the FO2 default setting is Off the previous value set will be maintained 90 ACCESSORIES Optional items available from your Authorized Aeris Dealer P N 10 0020 P N 10 0021 P N 10 0030 e P N 10 0040 P N 10 0050 e P N 10 0051 e P N 10 0052 P N 10 0053 P N 10 0054 Lens Protector pressure Gauge adheres to lens face prevents scratches Lens Protector computer module adheres to lens face prevents scratches Dive Downloader DDA PC download package hardware amp software Battery Kit includes 2 batteries 1 o ring silicon grease Quick Disconnect for High Pressure hose Universal Transit Clip B C Retractor Attachment Gauge Sock for Transport protection Gauge Bag for Transport carrying Atmos Pro Aeris 300G RESPONSIBLE COMPUTER DIVING Since the advent of dive computers it is a common mistake to assume that the old traditional rules of diving no longer apply but the truth is just the opposite Before you
44. f oxygen Oxygen Toxicity The adverse physiological affects of exposure to elevated levels of oxygen Partial Pressure The proportion of the total pressure contributed by a single gas in a mixture of gases PO2 Partial pressure of oxygen The proportion of total pressure of a gas mixture contributed by oxygen Repetitive Dive Any dive that takes place within 12 hours of a previous dive Safety Stop A depth at which adiver may choose but is not required to pause during ascent toallow absorbed nitrogen to escape naturally from the tissues 94 Atmos Pro Aeris 300G GLOSSARY continued Square Wave Dive A type of dive profile where the entire dive is spent at one depth between descent and ascent Tissue See Compartment Tissue Compartment See Compartment Transducer An electro mechanical device in a dive computer that acts as a depth or pressure sensor Transition Period The first 10 minutes of surface time after ascending above 3 feet 1 meter from a dive 95 Bers SERVICE RECORD SERVICE NOTE Serial Number It is possible to damage Date of purchase the Atmos Pro Aeris 300G depth sensor if it is not Purchased from pressure tested properly Below to be filled in by an Authorized Aeris Dealer Service Performed Dealer Technician A WARNING Never pressure test the Atmos Pro or Aeris 300G in an air environment Doing so may damage the depth sensor possibly re sulting in erroneous depth or time
45. feet of fresh water rather than feet of sea water Therefore when re turning to lower altitudes diving should not be conducted until the Atmos Pro Aeris 300G automatically clears of any residual nitrogen and oxygen loading and resets to operate at the new altitude WARNING Altitude compensation provided by the Atmos Pro Aeris 300G takes place when the unit is activated DO NOT dive at any different altitude until the unit shuts off It will recalibrate automatically when reactivated at the new altitude MORE ABOUT NITROX DIVING WARNING Diving with enriched nitrogen oxygen nitrox mixtures reguires special knowledge of the variations imposed upon divers their activities and their eguipment by the in creased percentage of oxygen Aeris recommends completion of a specialized Nitrox training course by a recognized training agency prior to diving with any enriched nitrogen oxygen nitrox mixtures Both central nervous system CNS oxygen toxicity and pulmonary oxygen toxicity were taken into consideration when the current maximum limits Fig 73 for exposure to oxygen were published by NOAA in the October 1991 NOAA Diving Manual Although CNS oxygen toxicity is considered the pri mary constraint for higher levels of PO2 there are circumstances in which pulmonary oxygen toxicity can limit exposures CNS oxygen toxicity is not considered likely at PO2 levels below 1 30 ATA It is however related to diver s work level Performing strenu
46. g Mode press the Advance Left button 2 times or once while the Date T ime are being displayed That dive s data will be displayed however it will not be stored in the unit s memory until the 10 minute transition period is completed If you descend during the 10 minute transition period time underwater will be considered a continuation of that dive Thetime at the surface if less than 10 minutes will not be added as Elapsed Dive Time Once 10 minutes have elapsed the Surface Mode icon and Surface Interval time display colon will stop flashing Fig 39 indicating that the dive and tran sition period are completed and a subsequent descent will be considered a new dive Other information will continue to be displayed and you will have full access to other modes FO2 MODE If the Atmos Pro Aeris 300G was set for F O2 of Air or 21 prior to the dive it will stay set for Air or 21 respectively unless you reset it to a higher nu meric value prior to the next dive If the FO2 Default was turned On and the unit it was set for a numeric value of FO2 greater than 21 22 to 50 prior to the dive the FO2 value dis played after the dive will be 50 Fig 40 and subsequent dives will be calcu lated based on 50 oxygen for oxygen calculations and 21 oxygen 79 nitro gen for nitrogen calculations unless you set F O2 for another value If the FO2 Default was turned Off the unit will maintain the FO2 setting pre viously en
47. he yellow Caution zone Fig 67 you should exercise caution The Aeris 300G emits a double beep If accumulation exceeds the limit of oxy gen tolerance Oxygen Dive Time Remaining is 0 00 and the O2 Bar Graph Atmos Pro Aeris 300G will enter the red Danger zone and the full bar graph will flash as a warning Fig 68 The Aeris 300G will emit one beep per second In the event the 02 Bar Graph enters the red danger zone you must immedi ately focus on making a safe controlled ascent to the surface to prevent further exposure As your accumulation decreases during your surface interval the O2 bar graph will gradually recede into the yellow Caution zone and green Normal zone Always keep the O2 Bar Graph in the green zone WARNING DO NOT allow the O2 Bar Graph to enter the red Danger zone Doing so greatly increases the risk of CNS oxy gen toxicity and may result in serious injury or death Body metabolism varies from person to person and even from day to day If you are feeling less than 100 or you are in less than perfect physical shape use the yellow Caution zone as a visual reference to place a wider margin of protection between you and the limits of oxygen tolerance UNEXPECTED LOSS OF DISPLAYED INFORMATION While No Decompression diving if you find that any major piece of equipment is not functioning correctly you must abort the dive im mediately and surface slowly in a controlled manner f your Atmos Pro Aeris 300G s
48. hilein a dive mode press the Select Right control button The screens will be illuminated for 5 seconds Release and press again as desired Aeris recommends that you always carry primary and backup dive lights when conducting dives that could include low light situations Atmos Pro Aeris 300G Violation geet Transition Fig 13 Backlight 13 Bers 140 F 60 C 40 F 10 C EI Fig 14 Temperature Range 14 OPERATING TEMPERATURE The Atmos Pro Aeris 300G will operate in almost any temperature diving envi ronment in the world Fig 14 between 40 F and 140 F 10 and 60 C At extremely low temperatures the LCD may become sluggish but this will not affect it s accuracy If stored or transported in extremely low temperature ar eas below freezing you should warm the module and its batteries with body heat before diving SHARING THE ATMOS PRO AERIS 300G WARNING Never participate in sharing or swapping of a dive computer Doing so may result in injury or death The Atmos Pro Aeris 300G provides information based upon a diver s personal dive profile and therefore must not be shared between divers It is im possible for two divers to stay precisely together underwater and your computer s dive profile tracking of previous dives will be pertinent to you only Nitrogen and oxygen loading of a second user may be significantly different and thus swapping dive computers
49. how ing your relative no decompression or decompression status As your depth and elapsed dive time increase segments will add to the graph and as you as cend to shallower depths the bar graph will begin to recede indicating that additional no decompression time is allowed for multilevel diving The Nitrogen Bar Graph monitors 12 different nitrogen compartments simul taneously and displays the one that is in control of your dive It is divided into a green No Decompression zone a yellow Caution zone and a red Decompres sion zone The bar graph gives a visual representation of just how close you are to the no decompression limit with a yellow Caution zone This portion of the bar graph allows you to make a decision regarding safety stop duration or necessity While you cannot provide a guarantee against the occurrence of decompression sickness you may choose your own personal zone of caution based upon age physique excessive weight etc to reduce the statistical risk The Nitrogen Bar Graph assists you with managing decompression by filling a large red ceiling stop required segment Decompression is explained in detail in the Handling the Extremes section Prior to a repetitive nitrox dive if the segments of the Nitrogen Bar Graph are displayed while in the Plan mode and no segments of the Oxygen Bar Graph are displayed that next dive is calculated to be controlled by nitrogen loading WARNING Aeris advocates responsibl
50. ics Aeris strongly recommends that you DO NOT dive until the batteries are replaced Fig 17 Low Battery 19 Bers 20 Fig 18 Surface Mode ENTERING SETTINGS Before going diving set the date time and select F O2 default on off units of measure and dive profile resolution For the Aeris 300G model only select the audible alarm on off Setting the F O2 value for the nitrox mix being used is a pre dive setting that must be entered before each nitrox dive This is described in the Pre Dive and Dive Mode section WARNING Date time FO2 default on off the FO2 value en tered dive profile resolution and audible alarm on off Aeris 300G must be reset if batteries are replaced To access the Set Mode depress both buttons simultaneously and momentaril less than 4 seconds while in the Surface Mode Fig 18 While in the Set Mode the Advance Left button is used to move through the available settings and the Select Right button is used to enter the setting that is shown on the screen NOTE If the Atmos Pro Aeris 300G is left unattended no but tons depressed for 2 minutes while in the Set Mode it will au tomatically revert to Surface Mode Atmos Pro Aeris 300G SET FO2 50 DEFAULT ON OFF Factory set for Default On Fig 19 Toturn the Default function Om depress both buttons simultaneously while in Surface Mode depress the Select Right button to toggle between On and Off
51. is Customer Service HOWTO OBTAIN SERVICE Take your Atmos Pro Aeris 300G to an Authorized Aeris Dealer Toreturn your Atmos Pro Aeris 300G to Aeris Customer Service Package it using a protective cushioning material Include a legible note stating specific reason for return your name ad dress daytime phone number serial number and a copy of your original sales receipt Authorized Aeris Dealers use a Product Return Form Send prepaid and insured to the nearest Aeris service facility If you have any questions regarding service call Aeris Customer Service NOTE Be sure to record all dives in your personnal Log Dive log data will be erased whenever your Atmos Pro Aeris 300G re ceives factory service BATTERY LIFE The unit s battery consumption rate varies throughout periods of operation which begin upon activation and continue for 24 hours after surfacing from a dive The exact number of dives or hours of operation that you will obtain with a set of batteries is subject to variables such as the number of dives con ducted during an operational period the manufacturer model and age of the batteries actually used and use of the backlight Tests and calculations indicate that a two new CR2032 lithium batteries will maintain unit operation for approximately 50 activation periods of 24 hours Therefore you could expect to obtain Fig 69 from 50 dives if only 1 dive is conducted each time the unit is activated to o
52. lay that indicates the Maximum Depth that can be achieved with an oxygen partial pressure of 1 60 ATA for the FO2 value set will appear Fig 28a If FO2 is set for Air the PO2 display will not appear e the unit will revert to the Surface Mode after 2 minutes or if you depress the Advance Left button Fig 28 Max Depth allowed for FO2 set 28 DIVE PLANNER Aeris strongly recommends that you review the Dive Planner prior to every dive to help you plan your dive as reguired to avoid exceeding no decompression or oxygen exposure limits This is especially impor tant for repetitive dives when the Dive Planner Fig 29 will indicate for you the no decompressi on bottom times that are available to you on your next dive based on any residual nitrogen accumulation following your last dive and sur face interval WARNING The Dive Planner predicts only no decompression times for subseguent dives Depending on cylinder size breath ing gas consumption and oxygen accumulation you may have less time available than indicated because of breathing gas quantity or other limitations With each depth display you will see either predicted no decompression limits based upon your previous dive profiles if calculated to be nitrogen controlled or predicted oxygen tolerance limits based upon either a single dive exposure or your 24 hour accumulation of oxygen if calculated to be oxygen controlled No decompression times are only dis
53. le as 5 minutes has been shown to have a dramatic effect on the bubble formation in divers It s important Dont forget it 91 Bers GLOSSARY The following aredivingterms to becomefamiliar with Some apply specifically tothe Atmos Pro Aeris 300G Air Dive A dive conducted using air approximately 21 oxygen amp 79 nitrogen as the breathing gas Algorithm A step by step mathematical formula designed to accomplish a particular result i e Dive Time Remaining in the Atmos Pro Aeris 300G Altitude Dive A dive made at an elevation above sea level 2 000 ft 610 m wherea different set of no decompression tables is used Ascent Rate The speed that a diver ascends toward the surface Ascent Rate Indicator A display on the Atmos Pro Aeris 300G that shows ascent rate as a bar graph alongside a color coded indicator Audible Alarm A computer emitted tone that alerts the diver to potential danger Caution Zone T heyellow sections of theNitrogen Bar Graph and O2 Bar Graph that gives a visual warning of a diver s proximity to respective decompression or oxygen tolerance limits Ceiling See decompression ceiling Clean Dive A dive preceded by 24 hours of no diving activity CNS Abbreviation for the Central Nervous System of the body Competitive Dive A dive conducted for profit or prize Compartment A term applied to the hypothetical modeling of nitrogen absorption in the tissues more accurate than the term tiss
54. lein the Surface Mode The Dive Planner will show adjusted No De compression Limits Fig 45 based on residual nitrogen calculated to be re maining from the previous dives Two hours after the dive whilethe Time to Fly and Desaturation countdowns are being displayed continuously access is gained by first depressing the Select Right button to return to Surface Mode Calculated dive times and the maximum allowed depth displayed will increase as the real time surface interval increases after completion of a dive The Dive Planner will only scroll to the maximum depth allowed by the nitrogen or oxy gen limit whichever is in control The respective bar graph will be displayed to indicate which is in control DIVE LOG MODE Information from your 12 latest dives is stored in the Log for viewing giving you the opportunity to record data in your log book before it is eventually over written by subsequent data After 12 dives are accumulated each subsequent dive will overwrite the oldest dive that exists in the log e the unit will add the most recent dive while de R1 R1 leting the oldest Dive log information will not be lost when batteries are re moved from the unit Factory service will delete the log information Dives are displayed in a reverse sequence that starts with the dive most re cently recorded back to the oldest of the 12 dives stored Thus your most re cent dive will always be the first shown in the sequence Each
55. lent to 1 000 feet 330 meters above sea level or greater When repetitive dives are conducted during the same day or period of days it is suggested that the interval be increased to a minimum of 24 hours Note that land travel to higher elevations after diving must also be considered as an exposure to altitude MORE ABOUT ALTITUDE DIVING WARNING Diving at high altitude requires special knowledge of the variations imposed upon divers their activities and their equipment by the decrease in atmospheric pressures Aeris recommends completion of a specialized Altitude training course by a recognized training agency prior to diving in high altitude lakes or rivers 81 Bers 82 Atmospheric pressure decreases as altitude increases above sea level Weather systems and ambient temperature also affect barometric pressures Conse quently depth reading instruments that do not compensate for the decrease in pressure indicate depth readings shallower than the depth they are actually at The Atmos Pro Aeris 300G automatically compensates for decreased ambient pressure when activated at high altitudes up to 14 000 feet 4 267 meters Its program contains a high altitude algorithm that reduces no decompression and oxygen exposure limits to add a larger zone of caution Whenever the Atmos Pro Aeris 300G is manually activated at altitudes higher than 2 000 feet 610 meters it will automatically recalibrate itself to measure depth in
56. lve separate transparent displays laid on top of one another Fig 74 Thetissue compartment that has filled up fastest is the only one the viewer can see from the top At any particular point one tissue compartment may be absorbing nitrogen while another that was previously higher may be off gassing Figure 75 illus trates the point at which one compartment hands over control to another Atmos Pro Aeris 300G No of Tissue Segments Half Time etc etc No of Tissue Segments Half Time 5 160 6 120 7 80 8 40 Display Seen 20 by the Diver Display Seen by the Diver __ Fig 74 Tissue Compartment Control Fig 75 Tissue Compartment Control Hand Over 85 Bers Atmos Pro compartment at a different depth This feature of the Decompres Depth R G sion Model is the basis of multilevel diving one of the most impor feet meters Eng Metric NDL mine tant contributions the Atmos Pro Aeris 300G offers you Take ad vantage of this feature and make all of your dives multilevel dives 30 9 260 283 SE L oa NO DECOMPRESSION LIMITS 50 15 80 84 100 o e A Note how the No Decompression Limits for the Atmos Pro Aeris 80 24 30 31 40 300G are contrasted with the U S Navy limits Fig 76 For most 90 27 24 26 30 depths the Atmos Pro Aeris 300G provides somewhat less no de 100 30 19 20 25 compression times than the U S Navy Tables However while the SCH GE ei o Se No Decompression
57. m the console Grasp the H frame with your fingers and pull it straight out and away from the console DO NOT pry it off with tools 73 Remove the Color Trim pieces b c located above below the gauges b p Grasp the sides with your fingers and pull them straight out and away from the console DO NOT pry them off with tools e While holding the console handle d with your left hand press the right side of the boot e back and away from the dual gauge unit Grasp the dual gauge unit with your right hand and pull it out toward 4 the right and away from the boot far enough to access the battery BATTERY REMOVAL WARNING The following procedure must be closely adhered to Damage due to improper battery replacement is not cov ered by the Atmos Pro Aeris 300G limited 2 year warranty The battery compartment should only be opened in a dry and clean environ ment with extreme care taken to prevent the entrance of moisture or dust Examine the case back to find the battery hatch Fig 71a Apply a coin not a screwdriver to the recessed slot of the battery hatch and turn the hatch out counterclockwise to remove it from the housing Inspect the o ring for any signs of deterioration If found remove the o ring by pressing the sides with your fingertips to cause it to protrude slightly from the groove of the battery hatch and discard DO NOT use tools to remove Fig 71 Battery Hatch 74 Atmos Pr
58. ng Depth and Elapsed Dive Time will be displayed NOTE Decompression Dive Mode Violation Modes and Gauge Mode are described in the Handling the E xtremes section ASCENDING TO THE SURFACE While ascending to shallower depths the segments that have filled up the Ni trogen Bar Graph will begin to recede Fig 36 offering a graphic representa tion of your multilevel diving capability If you enter the Decompression Mode you must not complete your ascent until the Nitrogen Bar Graph is at least inside the yellow Caution Zone Atmos Pro Aeris 300G Fig 36 Nitrogen Bar Graph receding 33 errs Fig 37 Ascent Too Fast 34 Even if you do not enter the Decompression Mode a safety stop made between 15 20 feet 5 6 5 meters is strongly recommended as a stan dard procedure before completing your ascent You should make every effort to complete all of your ascents with the Nitrogen Bar Graph inside of the green zone While you cannot provide a guarantee against the occurrence of de compression sickness you may choose your own personal zone of caution based upon your individual age physique excessive weight training experience etc to reduce the statistical risk The Ascent Rate Indicator shows how fast you are ascending When you ex ceed the maximum recommended ascent rate of 60 feet per minute 18 meters per minute the bar graph will enter the red Too Fast zone Fig 37 You will be alerted by all
59. not make another dive for at least 24 hours WARNING Using the Atmos Pro Aeris 300G just as using the U S Navy or other No Decompression Tables is no guarantee of avoiding decompression sickness i e the bends CONCLUSION The Atmos Pro Aeris 300G is an informational tool whose entire worth de pends on understanding all of its features and functions and using it correctly Learn how to use it and use it wisely Be a responsible diver Atmos Pro Aeris 300G Bea RESPONSIBLE DIVER at all times 87 Bers SPECIFICATIONS NO DECOMPRESSION MODEL Basis Modified Haldanean Algorithm 12 tissue compartments Data Base Diving Science and Technology DSAT Rogers P owell Performance Tissue compartment halftimes in mins Spencer s M values 5 10 20 40 80 120 160 200 240 320 400 480 Reciprocal subsurface elimination 60 minute surface credit control for compartments faster than 60 minutes Tissue compartments tracked up to 24 hours after last dive Decompression Capabilities Decompression stop ceilings at 10 20 30 40 50 amp 60 feet 3 6 9 12 15 amp 18 meters Altitude Algorithm Based on NOAA tables Oxygen Tolerance Limits Based on NOAA tables 88 OPERATIONAL MODES Activation Diagnostic Surface Date Time FO2 Set Point Dive Planner Set FO2 Default on off Audible Alarm on off Aeris 300G only Unit imperial metric
60. o 12 dives conducted during a 24 hour period In the event that the maximum limit for oxygen loading has been exceeded for that day 24 hour period all of the seg ments of the O2 bar graph will be displayed Fig 32 Depth and Time dis plays will not appear until the O2 bar graph recedes into the green normal zone i e your daily oxygen dosage decreases an amount equivalent to the amount accumulated during the latest dive completed WARNING The Atmos Pro Aeris 300G must be manually acti vated and be in an operating mode prior to start of a dive The unit will not activate automatically by immersion in water Also the FQ2 setting must be verified prior to each nitrox dive NO DECOMPRESSION DIVE MODE Once activated the Atmos Pro Aeris 300G will enter the No Decompression Dive Mode Fig 33 when you descend deeper than 5 feet 1 5 meters Infor mation displayed includes Current Depth Elapsed Dive Time and Elapsed Dive Time icon Dive Time Remaining and No Decompression Dive Mode icon and Maximum Depth for that dive and Max Depth icon The bar graphs will indicate nitrogen loading ascent rate and oxygen loading if FO2 was set for a value other than Air Atmos Pro Aeris 300G Fig 33 No Decompression Dive Mode 31 To activate the backlight press the Select Right button The displays will be R1 illuminated for 5 seconds Press and release again as desired To view Temperature Fig 34a press the Advanc
61. o Aeris 300G Closely check the threads of the battery hatch and the housing for any signs of damage which might impair proper threading If found return your module to your Authorized Aeris Dealer and DO NOT attempt to use it until it has received factory service WARNING DO NOT attempt to disassemble any other portion of the module Doing so may cause a dangerous malfunction resulting in possible injury or death Indication of tampering with the module will also void the unit s warranty e Turn theunit over to drop out the batteries and discard properly Closely check the metal contacts inside the battery compartment for any signs of stress bending or breakage and for any signs of corrosion indi cating entrance of moisture into the unit If found return your module to an Authorized Aeris Dealer and DO NOT attempt to use the unit until it has received factory service If water or corrosion is found in the battery compartment it is best to have your unit inspected and cleaned by an Authorized Aeris Dealer If you are at tempting a repair in the field proceed as follows R1 e Inspedt the lens and case to ensure they are not cracked or damaged Inspect the button covering to ensure it does not have cuts or holes Remove the batteries discard and DO NOT reuse e Check the o ring seating surfaces for damage nicks cuts divots etc 75 errs Battery a Hatch Batteries G ss Beer Btm Housing To
62. onary oxygen toxicity The O2 bar graph provides a visual representation of oxygen accumulation for either that dive or 24 hour period whichever is greater Aeris strongly recommends that you avoid exceeding oxygen expo sure limits and reminds you that nitrox diving requires special train ing and understanding of the effects of oxygen toxicity Atmos Pro Aeris 300G Flashing Flashing Fig 65 High PO2 Mode gt 1 60 ATA 63 Fig 66 Plan Mode O2 Limit Exceeded Fig 67 High Oxygen Accumulation warning 64 WARNING In the event that you exceed the maximum per dive allowable oxygen exposure dose it is recommended that you allow a surface interval of at least 2 hours before reentering the water If you exceed the maximum 24 hour period allow able oxygen exposure dose you must allow a surface interval of at least 24 hours before reentering the water During this time the Plan Mode will only display the letters O2 Fig 66 HIGH OXYGEN ACCUMULATION Your nitrox dive training taught you not to get too close to the oxygen toler ance limits The 02 Bar Graph provides you with a convenient graphic repre sentation of your oxygen accumulation displaying either oxygen accumulated during that dive or during your repetitive dives conducted during that 24 hour period whichever of the two is greater at that time As your accumulation increases the segments will fill the O2 Bar Graph Upon entering t
63. ore flying is recommended Following any dive that required a decompression stop flying should be delayed for at least 24 hours and if possible for 48 hours Since the 1990 UH MS guidelines were introduced data from the Diver s Alert Network DAN was introduced that resulted in DAN s position that A minimum surface interval of only 12 hours would be required in order to be reasonably assured a diver will remain symptom free upon ascent to altitude in a commercial jet airliner altitude up to 8 000 feet 2 440 meters Divers who plan to make daily multiple dives for several days or make dives that require decompression stops should take special precautions and wait for an extended surface interval beyond 12 hours before flight excerpted from DAN s Current Position on Recreational Flying After Diving Atmos Pro Aeris 300G Both the UHMS and DAN agreethat There can never beaflying after diving rule that is guaranteed to prevent decompression sickness completely Rather there can be a guideline that represents the best estimate for a conservative surface interval for the vast majority of divers There will always be an occa sional diver whose physiological makeup or special diving circumstances will result in the bends To reduce the risk of developing decompression sickness after a single no de compression dive current guidelines suggest waiting 12 hours prior to expo sure to atmospheric pressures equiva
64. orial representation of an operational mode LCD Abbreviation for liquid crystal display an easily viewed low voltage display usually found on dive computers Maximum Depth The deepest depth attained during a dive Mode A specific set of functions in a dive computer 93 eris GLOSSARY continued Multiplexing Display A display on an instrument that alternates to show different information relating to separate events Multi level Dive A type of dive profile where the diver spends various times at different depths opposite of a Square Wave dive profile Nitrogen Bar Graph A graphic display of simulated nitrogen absorption on Aeris dive computers Nitrox A nitrogen oxygen breathing gas mixture that contains a higher fraction of oxygen than air Nitrox Dive A dive conducted using nitrox 22 to 50 02 as the breathing gas No Deco Abbreviation for No Decompression No Deco Time Remaining The amount of dive time remaining based on no decompression status No Decompression Any part of a dive where the diver can surface without requiring a decompression stop O2 Bar Graph A visual representation of oxygen accumlation on a dive computer display OTU Abbreviation for oxygen tolerance unit A Hamilton s Repex method term for oxygen dose Out of Range The point at which a dive computer can no longer supply correct dive information Oxygen Tolerance Dose or exposure to the physiological affects of elevated levels o
65. ou to select various display options and access specific information when you choose to see it The controls consist of the Advance Left button and Select Right button Fig 1 The control buttons can be pressed repeatedly or held in to scroll and con tinue as you set or access different display modes On the surface the control buttons are used to activate the display module ac tivate the backlight access the Date Time Plan and Log modes select units of measure set the F O2 default feature On Off set the percentage of oxygen FO2 for a nitrox mix being used set the Date Time and select the dive pro file sampling resolution that you desire for data to be downloaded The buttons can also be used to access an External Access mode to download copy dive data to a unique PC log profile program The buttons of the Aeris 300G can also be used to set the audible alarm feature On Off Underwater the buttons are used to activate the backlight view temperature and view an alternate display of information if in decompression mode Atmos Pro Aeris 300G INFORMATIONAL DISPLAYS Operational modes and status information are visually represented numeri cally and or graphically and can be understood at a glance with the aide of uni versal icons Fig 2 that identify and bring quick focus to the displays Also segmented bar graphs will show how close you are to critical limits The Aeris 300G has an audible alarm that sounds to ale
66. ous tasks could cause the symptoms of oxygen poisoning to occur at PO2 levels lower than they normally would appear during casual recreational diving The nitrox features of the Atmos Pro Aeris 300G are intended for use only by recreational divers trained for nitrox diving by an instructor Atmos Pro Aeris 300G Maximum Exposure Time PO2 Per Dive Per 24hr ATA Min Min 0 60 720 720 0 70 570 570 0 80 450 450 0 90 360 360 1 00 300 300 1 10 240 270 1 20 210 240 1 30 180 210 1 40 150 180 1 50 120 180 1 60 45 150 Fig 73 Oxygen Exposure Limits 83 errs RESPONSIBLE DIVER 84 Bea at all times certified by a recognized training agency to teach diving with nitrox The Atmos Pro Aeris 300G is not intended for use by military or com mercial divers WARNING In the event that you exceed the maximum limit of per dive allowable oxygen exposure dose it is recommended that you allow a surface interval of at least 2 hours before reen tering the water If you exceed the maximum limit of 24 hour period allowable oxygen exposure dose you should allow a surface interval of at least 24 hours before reentering the wa ter MULTIPLE TISSUE TRACKING The Atmos Pro Aeris 300G tracks twelve tissue compartments with halftimes ranging from 5 to 480 minutes The Nitrogen Bar Graph always displays the controlling compartment that is the only one important at that time Think of the Nitrogen Bar Graph as twe
67. p Fig 72 Installing Batteries 76 Flush the battery hatch and compartment with a solution of 50 white vinegar and 50 water Rinse with fresh water and allow to air dry over night or blow dry with a hair dryer set at no heat BATTERY INSTALLATION Lightly lubricate the battery hatch o ring then stretch it slightly to work it up over the slotted top of the hatch DO NOT roll it over the threads Install two new 3 volt lithium batteries Duracell DL 2032 Radio Shack 23 162 Maxell CR2032 Panasonic CR2032 or equivalent into the bat tery compartment with the positive side facing up out of the battery compartment with one directly on top of the other Fig 72 Avoid touching either the battery contacts or the flat surfaces of the batteries as skin oil will impair correct contact Lightly lubricate the battery hatch o ring with silicon grease and install it onto the battery hatch DO NOT roll the o ring over the threads of the battery hatch Instead stretch it slightly to work it down over the slotted end of the battery hatch and into the groove at the base of the threads NOTE This o ring must be a genuine Aeris Part that canbe 1 purchased as part of a battery kit from your Authorized Aeris Dealer Use of any other o ring will void the warranty Carefully insert the battery hatch into the housing and turn it slowly clockwise by hand to ensure correct threading Turn until snug then ap ply a coin and tighten un
68. person and even from day to day If you are feeling slightly less than 100 or you arein less than perfect physical shape use the yellow Caution zone as a visual reference to place a wider margin of protection between you and the No Decompression Limit DECOMPRESSION DIVE MODE The Atmos Pro Aeris 300G will help you to avoid and manage decompression Atmos Pro Aeris 300G Caution zone Q e 154 ef S 25a O 135 Fig 52 Approaching No Decompression Limit 51 WARNING Aeris recommends the application of responsible diving practices and does not recommend decompression div ing or diving deeper than 130 feet 39 m as these practices will greatly increase your risk of decompression sickness Decompression Dive Mode Fig 53 activates when the theoretical no decom pression limits are exceeded causing the Nitrogen Bar Graph to pass the yel low Caution zone and enter the red Decompression zone The Aeris 300G will emit a double beep to alert you Fig 53 Decompression Information displayed includes current Depth current decompression ceiling Dive Mode Stop Depth and Time and ceiling stop icon and Total Ascent Time that in cludes stop times required at all ceilings and vertical ascent time calculated at 60 feet 18 meters per minute The ceiling bar of the Decompression Mode icon will flash continuously The O2 bar graph if a nitrox dive and Ascent Rate Indicator will continue to rep
69. played for depths where there is at least 3 minutes of dive time available at the depth taking into account a descent rate of 120 feet 36 meters per minute Depths greater than the maximum depth Atmos Pro Aeris 300G Li MTS Fig 29 Dive Planner 29 Fig 31 Oxygen Control 30 that can be achieved with a PO2 of 1 60 BAR will not be displayed To access the Dive Planner while in the Surface mode press the Advance Left button 3 times press and hold the Select Right button to view a sequence of depths from 30 to 160 feet 9 to 48 meters in 10 foot 3 meter increments or press and release the button repetitively to view the information one in crement at a time if the Select Right button is not depressed for a period of 2 minutes the unit will automatically revert to the Surface mode torevert to the Surface mode at any time while in the Dive Planner mode press the Advance Left button once The no decompression limits for a clean dive no dives in the previous 12 hours are provided in the Reference section Prior to a Repetitive Nitrox Dive If the segments of the Nitrogen Bar Graph are displayed during the Dive Plan ner Fig 30 that next dive is calculated to be controlled by nitrogen loading If the segments of the O2 bar graph are displayed Fig 31 that next dive is calculated to be controlled by oxygen loading The Atmos Pro Aeris 300G will store oxygen accumulation for up t
70. re few legitimate excuses for making unplanned Decompression dives and the consequences of this type of diving can be severe Decompression div ing requires special training and support The Atmos Pro Aeris 300G is in tended for use by recreational divers not engaged in intentional de compression diving Decompression features are provided only for emergency situations By entering decompression you automatically im pose a ceiling above you which you cannot immediately ascend beyond deny ing you free access to the surface Professional military and commercial divers plan ahead for this situation by ensuring that they have complete surface support including a redundant breathing gas supply for emergencies They also navigate very carefully throughout their dive to ensure that they begin and complete their ascent while maintaining contact with a ropeor a line to the surface This is neces sary for making a well controlled ascent The Atmos Pro Aeris 300G is not intended for use by military or commercial divers By making an unplanned Decompression dive without the necessary prepara tion and training you will have placed yourself in an unnecessarily danger ous situation Consider also that one mistake can quickly be compounded by several others The Atmos Pro Aeris 300G is a sophisticated instrument designed with capa bilities that go beyond the range of recreational diving with compressed air It should not be considered however
71. resent their respective information By pressing the Advance Left button an Alternate Display will appear show ing Maximum Depth and icon and Elapsed Dive Time and icon in the lower screen Fig 54 for button depression time plus 3 seconds after it is released The amount of decompression credit time that you receive is dependent on depth with slightly less credit given the deeper you are Still you must never ascend shallower than your decompression ceiling Doing so Fig 54 Alternate Display 52 will greatly increase your risk of decompression sickness and place the unit into a Conditional Violation Mode described later When coping with surge and swells it may be difficult to stay at an exact depth You should stay slightly deeper Fig 55a than the required stop depth indicated until the next shallower stop depth appears Then you can ascend to but not shallower than that indicated ceiling stop depth Once you have performed the required decompression the Atmos Pro Aeris 300G will switch to the No Decompression Dive Mode allowing additional time underwater Though more time is theoretically available it is strongly recom mended that you spend the remainder of the dive continuing to decompress at or slightly deeper than 10 feet 3 meters This will let the Nitrogen Bar Graph recede further into the yellow Caution zone or green No Decompression zone helping you reduce your tissue nitrogen loading as much as
72. result in loss of all decompression and oxygen monitoring functions for 24 hours after that dive This is considered a Permanent Violation EXCEEDING MAXIMUM OPERATING DEPTH Although the Atmos Pro Aeris 300G will withstand the pressures found at 330 feet 99 5 meters the depth that you can still use all of its features could be much shallower WARNING Aeris does not advocate diving to depths below the maximum recommended sport diving depth limit of 130 feet 39 meters Any deeper dive the basis for which is purely theo retical should be avoided Special training equipment and support are necessary for this type of diving The maximum depth the unit will display all of its features is 330 feet 99 5 meters Upon exceeding 330 feet 99 5 meters the Nitrogen and O2 Bar Graphs will flash and the Depth and Maximum Depth displays will only indi cate the letters oor signifying that you are out of range Fig 63 Thenu meric display for Current Depth will not reappear until you ascend shallower than 330 feet 99 5 meters You will also enter the Delayed Violation Mode For the remainder of that dive and in the log for that dive only the letters oor will be displayed as the value for Maximum Depth OXYGEN EXPOSURE There are few legitimate excuses for exceeding the maximum limits for expo sure to oxygen and the consequences of CNS Central Nervous System oxy gen toxicity can be severe resulting in Gran Mal convul
73. roceed Relax and read through the complete guide Atmos Pro Aeris 300G It is extremely important that you e Read this owner s guide in sequence and understand it com pletely before attempting to use the Atmos Pro or Aeris 300G e Check the instruments frequently during your dive e You must also bea trained diver certified by a recognized train ing agency in Scuba diving e Prior to using the oxygen related features of the Atmos Pro Aeris 300G you must also be trained and certified for diving with en riched nitrogen oxygen nitrox breathing gas mixtures by a rec ognized training agency Remember that the rules you learned in your basic scuba certification course still apply to the diving you will do while using a dive computer some will be come even more important Technology is no substitute for common sense and a dive computer only provides the person using it with data not the knowledge to use it WARNING Inspect your Atmos Pro Aeris 300G prior to every dive checking for any signs of the entrance of moisture dam age to the button membranes or damage to the LCD display If these or other signs of damage are found return the unit to an RESPONSIBLE DIVER Authorized Aeris Dealer DO NOT attempt to use it until it has at all times received factory service Bers Advance Select Fig 1 Control Buttons CONTROL BUTTONS The Atmos Pro Aeris 300G is a unique dive computer with interactive controls that allow y
74. rt you to check the display data in critical situations Each numeric and graphic display represents a unique piece of infor mation It is imperative that you understand the formats ranges and values of the information represented to avoid any possible mis understanding that could result in error NOTE Throughout this owner s guide reference is made to the term breathing gas The rational being that the Atmos Pro Aeris 300G can be used for air dives or nitrox dives For clar ity these terms are defined as Breathing Gas the gaseous mixture breathed during a dive Air a breathing gas that contains approximately 21 oxygen and 79 nitrogen nature s common nitrogen oxygen mixture Nitrox a nitrogen oxygen breathing gas that contains a higher Fig 2 Universal Icons fraction of oxygen 22 to 50 than air Fig 4 Nitrogen Bar Graph 6 BAR GRAPHS Three bar graphs appear around the perimeter of the upper screen Fig 3 T hese segmented bar graphs are located next to green yellow and red color coded portions of the peripheral decal that denote normal caution and danger zones respectively When underwater you can quickly focus on the bar graphs to make sure that they arein the green and you are not getting too close to the no decompres sion limit or the limit for oxygen accumulation or ascending too fast Nitrogen Bar Graph The Nitrogen Bar Graph Fig 4 represents tissue loading of nitrogen s
75. segments of the bar graph flashing and by an audible alarm Aeris 300G only The warnings will stop when your ascent rate is slowed ALTITUDE DIVING The mathematical model within the Atmos Pro Aeris 300G accounts for the reduced No Decompression dive time available at higher elevations based on NOAA National Oceanic and Atmospheric Administration guidelines When Atmos Pro Aeris 300G diving in high altitude lakes or rivers from 2 000 to 14 000 feet 610 to 4 268 meters the Atmos Pro Aeris 300G will adjust automatically providing cor rected depth and reduced No Decompression and Oxygen Exposure times Also when above 2 000 feet 610 meters depth calibration is automatically changed to read in feet of freshwater rather than feet of seawater The Atmos Pro Aeris 300G will not activate above 14 000 feet 4 268 meters More about altitude diving is presented in the Reference section NOTE If activated above 14 000 feet 4 268 meters the Atmos Pro Aeris 300G will perform a diagnostic check followed by im mediate shutdown WARNING Until it has shut itself off you must not use the Atmos Pro Aeris 300G at a different altitude than the altitude where it was originally activated Doing so will result in an er ror equal to the difference in barometric pressure and possibly a false dive mode with erroneous data Bea RESPONSIBLE DIVER at all Altitudes 35 Bers SUMMARY OF PRE DIVE amp DIVE MODES To access a specifi
76. sions and drowning Diving with enriched nitrogen oxygen nitrox mixtures requires special train ing and certification WARNING The oxygen features of the Atmos Pro Aeris 300G are intended for use only by recreational divers trained for nitrox diving by an instructor certified by a recognized train ing agency to teach diving with nitrox The Atmos Pro Aeris 300G is not intended for use by military or commercial divers By making a nitrox dive without the necessary training preparation and equipment you will have placed yourself in an unnecessarily dangerous situ ation The unit is a sophisticated instrument designed with capabilities that go beyond the range of recreational diving with compressed air It should not be considered however that these built in capabilities Atmos Pro Aeris 300G O2 LIMITS ARE NOT MEANT TOBE EXCEEDED 61 Bers Fig 64 High PO2 Mode 62 Z M Do rer orc o H de C45 POZ 2 140 ATA provide any implied approval or consent from Aeris for individuals to exceed the defined limits of oxygen exposure as agreed on by all in ternationally recognized nitrox training agencies Nitrox diving should therefore be strictly controlled PARTIAL PRESSURE OF OXYGEN PO2 As depth increases during the dive the partial pressure of oxygen increases As you approach the depth limit for the FO2 value set before the dive the Atmos Pro Aeris 300G will alert you and display the PO
77. tered until another value is entered Atmos Pro Aeris 300G MT as be E Fig 39 Surface Mode greater than 10 min Fig 40 FO2 Default On 39 40 Fig 42 Timeto Fly Remember You must ensure that the FO2 setting matches the spe cific nitrox mix being used for each nitrox dive Toverify the FO2 setting while in the Surface Mode press the Advance Left button 2 times If FO2 was set for a numerical value the Maximum Depth that can be achieved with an oxygen partial pressure of 1 60 ATA for the FO2 value set will be displayed with the letters PO2 in the lower screen Fig 41 If FO2 was set for Air the PO2 screen will not appear press the Select Right button to change the setting TIME TO FLY AND DESATURATE During the first 2 hours after a dive after the 10 minute Transition Period R1 the Time to Fly and Desaturation countdowns can be accessed by depressing the Advance Left button 3 times whilein the Surface Mode If a violation oc curred during the dive Desaturation Time will not be displayed and a single dash will appear instead of the letters FLY The Fly counter upper screen Fig 42 is provided to assist you with deciding when enough surface time has elapsed to fly or travel to higher elevations R1 TheFly countdown starts at 23 50 hr min and counts down to 0 00 hr min The Desaturation counter lower screen Fig 43 provides calculated time for tiss
78. thetimeof purchaseand mailed toAeris within 30 days of purchase and or if the annual inspection isnot doneaccording tothisowner s guide This warranty isnon transferrableand applies to the original purchaser only All correspondence concerning this warranty must be accompanied by a copy of the original sales receipt and a copy of the owner s portion of the warranty registration card including the annual inspection record Once each year you must return the Atmos Pro or Aeris 300G to an Authorized Aeris Dealer within 30 days of the original purchase date anniversary to keep the two year limited warranty in force Annual inspection includes verification of depth accuracy and proper general function Labor charges for the annual inspection arenot covered by thewarranty You must provide a copy of the original sales receipt anda copy of the owner s portion of thewarranty registration card including theannual servicerecord to obtain warranty service Statement of Limitations General Warranty does not cover damage from accident abuse battery leakage tampering lack of proper care and maintenance and or proper annual servicing or improper use of the Atmos Pro or Aeris 300G Modifications or repair by anyone other than an Aeris Sales amp Service Center authorized to servicethe Atmos Pro or Aeris 300G will void the warranty Aeris will not be responsible for recovery or replacement of the product in theevent of loss or theft Aeris its distributors
79. til secure so the outer surface of the battery hatch is flush with the outer surface of the housing INSPECTION R1 e Activate the unit and watch carefully as it performs a full diagnostic and battery check and enters Surface Mode Observe the LCD display to ensure it is consistently clear and sharp in contrast throughout the screen If any portions of the display are missing or appear dim or if a Low Bat tery condition is indicated return the unit to your Authorized Aeris Dealer for a complete inspection before attempting to use it RETURNING THE MODULE TO BOOT ATMOS PRO R1 e If previously removed replace the rubber spacer into the boot wrist or hose mount type Orient the module over the opening in the boot and dip the bottom edge into it while pressing the top edge with the palm of your hand Stop pressing when the bottom edge of the module has just entered the boot Atmos Pro Aeris 300G 77 Bers Correct the alignment of the module as needed so that it is straight Press the module completely into place with your thumbs watching the alignment until it snaps into place AERIS 300G R1 Grasp the dual gauge unit with your right hand and push it into toward the left the boot feeding the hose fitting into the handle of the boot Pull the right side of the boot up over the right edge of the computer module and ensure it is evenly seated around the dual gauge Align the upper trim piece a above the consol
80. tops working for any reason it is important that you have an Fig 68 High Oxygen Accumulation alarm 65 errs 66 ticipated this possibility and are prepared for it This is an important rea son to avoid pushing the No Decompression and Oxygen Tolerance Limits and a critical reason to avoid entering decompression Regardless of your diving habits Aeris advises you to dive with additional backup instrumentation that can provide the data necessary to properly sur face if and when your primary instruments fail As with any other piece of equipment unforeseen things can happen By pre paring ahead of time you can spare yourself a great deal of frustration and dis appointment If you dive in situations where your trip would be ruined or your safety would be jeopardized by losing the use of your Atmos Pro Aeris 300G an analog or digital backup system or use of stan dard air or nitrox tables is highly recommended A FINAL WORD OF CAUTION Although the Atmos Pro Aeris 300G represents the latest in user friendly dive computer technology it cannot force you to understand how to use it Before diving with the Atmos Pro Aeris 300G be sure you thoroughly understand its functions and displays Contact your local Authorized Aeris Dealer if you have a question Above all re member technology is not a replacement for training experience and common sense CARE and MAINTENANCE Bers 68 Prevent Scratches CARE A
81. ue because dive computer models have no direct relation to human tissues DCS Abbreviation for decompression sickness i e the bends DECO Abbreviation for Decompression 92 Atmos Pro Aeris 300G GLOSSARY continued Decompression Ceiling Theshallowest depth a diver may reach upon ascent without risking decompres sion sickness Decompression Stop Thedepth s at which a diver must pause during ascent to allow absorbed nitrogen to escape naturally from the tissues Depth Sensor an electro mechanical device that converts water pressure into an electrical signal that is converted to a visual depth display Diagnostic Mode Thefirst display seen on divecomputers after initial activation during which time a self check for internal faults is performed Display A visual readout of information Dive Downloader An Aeris name for a PC interface hardware software package Dive Log Mode A computer display of previous dive information Dive Planner A display of available dive times at 10 foot 3 meter intervals from 30 to 160 feet 9 to 48 meters used when dive planning Dive Time Remaining A display of thetimebeforea diver must surface based on no decompression status Elapsed Dive Time T he total time spent underwater during a dive between 5 feet 1 5 meters on ini tial descent to 3 feet 1 meter on final ascent FO2 The fraction percent 100 of oxygen 02 in the breathing gas mixture Icon asmall pict
82. ue desaturation at sea level The countdown starts at 9 59 hours minutes maximum and counts down to 0 00 If the timeis calculated to be greater than 9 59 the display will indicate 9 Fig 44 until it decreases to 9 59 Two hours after the last dive the Time to Fly and Desaturation countdowns will be displayed continuously Access to other modes is gained by depressing the Select Right button to return to Surface Mode After a surface interval of 12 hours you may choose to fly or travel to higher elevations provided that your dive profile s did not enter decompression If your diving involved decompression or a repetitive multi day profile it is strongly recommended that you wait a full 24 hours after your last dive to add a greater degree of protection As you should be aware from your own training the longer you wait to fly or travel to higher elevations after diving the more you will reduce your exposure to decompression sickness More About Flying After Diving and DAN s guidelines is presented in the Ref erence section Atmos Pro Aeris 300G Fig 43 Desaturation Time less than 9 59 Fig 44 Desaturation Time greater than 9 59 41 Bers 42 Dn wd Hr Di Che Hi M Fig 45 Dive Planner adjusted limits DIVE PLANNER During the first 2 hours after a dive after the 10 minute Transition Period the Dive Planner can be accessed by depressing the Advance Left button 4 times whi
83. uring the FO2 Mode that appears 10 minutes after that dive will be 50 Fig 27 if the F O2 default is On or it will remain at the previous value set if the FO2 default is turned Off If the FO2 default is On the F O2 value must be reset for each repetitive nitrox dive or the value will automatically be 50 and the dives will be calcu lated based on 50 O2 for oxygen calculations and 21 O2 79 nitrogen for nitrogen calculations If you surface for greater than 10 minutes during a dive and the F O2 default is On a subsequent descent will be considered a Atmos Pro Aeris 300G Dis os ey Fig 27 FO2 Default On 27 Bers new dive and the FO2 value must be reentered Once a dive is made with the unit set as a nitrox computer F O2 set for a nu merical value the unit cannot be programmed to operate as an Air computer until 24 hours after the last dive Air will not be displayed as an option in the FO2 Mode However you can set FO2 for 21 for use with air To set enter a numerical value for the percentage of oxygen FO2 in your nitrox mix whilein the Surface Mode press the Advance Left button 2 times depress and hold the Select Right button when the FO2 Mode screen ap pears after Surface Mode e the percentage displayed will advance 1 Yo per second from 21 to 50 then display Air again e when the proper value of FO2 is displayed release the button the PO2 disp
84. ver 150 dives if 3 dives are con ducted each time the unit is activated Note that extensive use of the backlight will increase the rate of battery con sumption A NOTE The disposable batteries supplied with the unit are not covered by the Atmos Pro Aeris 300G limited 2 year warranty Atmos Pro Aeris 300G 50 Activation Periods Average Total Dives Dives Each To Period Expect 1 50 2 100 3 150 Fig 69 Battery Life 71 errs 72 Fig 70 Low Battery LOW BATTERY CONDITION During Surface Mode s voltage level is checked every 10 minutes If alow R1 battery condition is sensed a Battery icon will appear to allert you Fig 70a Upon decreasing to a voltage level that will not maintain proper unit opera tion the icon will flash for 5 seconds followed by shut down of the unit If the condition is sensed prior to a dive or during the first 2 hours after surfac ing the icon will appear while Surface Mode is displayed If the condition is sensed while Fly Modeis being displayed continuously starting 2 hours after surfacing the icon will appear with the Fly countdown If the condition occurs during the dive there will be sufficient voltage to maintain unit operation for the remainder of that dive and theicon will appear 10 minutes after the dive Aeris strongly advises that you replace the batteries and DO NOT at tempt to dive with the Atmos Pro Aeris 300G any time the Low Bat tery icon app

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300G & Atmos Pro