Aeris ATMOS 2 User manual

ATMOS 2

DIVE COMPUTER

OWNER'S GUIDE

LIMITED TWO-YEAR WARRANTY

For details, refer to the Product Warranty Registration Card provided.

This owners guide is copyrighted, all rights are reserved. It may not, in whole or in part, e copied, photocopied,

reproduced, translated, or reduced to any electronic medium or machine reada le form without prior consent in writ-

ing from AERIS / 2002 Design.

ATMOS 2 Owner's Guide, Doc. No. 12-7129

San Leandro, Ca. USA 94577

TRADEMARK NOTICE

AERIS, the AERIS logo, ATMOS 2, and the ATMOS 2 logo are all registered and unregistered trademarks of

AERIS. All rights are reserved.

PATENT NOTICE

U.S. Patents have een issued, 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), and Ascent Rate Indicator (U.S. Patent no. 5,156,055). User Seta le Display (U.S. Patent no.

5,845,235) is owned y Suunto Oy (Finland).

DECOMPRESSION MODEL

The programs within the ATMOS 2 simulate the a sorption of nitrogen into the ody y 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 2

dive computer model is ased upon the latest research and experiments in decompression theory. Still, using the

ATMOS 2, just as using the U.S. Navy (or other) No Decom ression Tables, is no guarantee of avoiding de-

com ression sickness, i.e. the bends. Every divers physiology is different, and can even vary from day to day.

No machine can predict how your ody will react to a particular dive profile.

CONTENTS

WARRANTY ................................................................................................................................................................. 2

NOTICES ..................................................................................................................................................................... 2

DECOMPRESSION MODEL ....................................................................................................................................... 2

FEATURES AND DISPLAYS ............................................................................................. 7

CONTROL BUTTONS ................................................................................................................................................. 9

BAR GRAPHS ............................................................................................................................................................. 9

Nitrogen Bar Graph ................................................................................................................................................ 9

Oxygen (O2) Bar Graph ........................................................................................................................................ 10

Variable Ascent Rate ndicator ............................................................................................................................. 10

INFORMATIONAL DISPLAYS ................................................................................................................................... 11

Depth Displays ..................................................................................................................................................... 11

Time and Date Displays ....................................................................................................................................... 11

Temperature Display ............................................................................................................................................. 12

AUDIBLE ALARM ...................................................................................................................................................... 13

LED WARNING INDICATOR ..................................................................................................................................... 14

BACKLIGHT .............................................................................................................................................................. 14

POWER SUPPLY ...................................................................................................................................................... 15

Battery ndicator ................................................................................................................................................... 15

Low Battery Condition .......................................................................................................................................... 16

FO2 MODE ................................................................................................................................................................. 17

FO2 50% Default .................................................................................................................................................. 18

DIVE TIME REMAINING ........................................................................................................................................... 19

ACTIVATION AND SETUP ............................................................................................... 23

ACTIVATION .............................................................................................................................................................. 24

SURFACE MODE ...................................................................................................................................................... 25

SET MODES .............................................................................................................................................................. 2

ENTER NG SETT NGS -SET MODE #1 ............................................................................................................... 27

ENTER NG SETT NGS -SET MODE #2 ............................................................................................................... 31

PRE DIVE PLAN MODE .................................................................................................. 45

DIVE PLANNER ........................................................................................................................................................ 4

DIVE MODES ................................................................................................................... 49

DIVE MODE BAR GRAPHS ...................................................................................................................................... 50

CONTROL OF DISPLAYS ......................................................................................................................................... 50

NO DECOMPRESSION DIVE MODE ....................................................................................................................... 51

DECOMPRESSION DIVE MODE ............................................................................................................................. 52

VIOLATION MODES .................................................................................................................................................. 5

Conditional Violation Mode .................................................................................................................................. 57

Delayed Violation Modes ..................................................................................................................................... 58

mmediate Violation Mode and Gauge Mode ...................................................................................................... 59

HIGH PO2 DIVE MODE ............................................................................................................................................. 1

HIGH OXYGEN ACCUMULATION ............................................................................................................................ 2

USER SET DIGITAL GAUGE MODE ........................................................................................................................ 4

POST DIVE MODES ........................................................................................................ 65

POST DIVE SURFACE MODE ..................................................................................................................................

TRANSITION PERIOD ..............................................................................................................................................

AFTER THE TRANSITION PERIOD (THE FIRST 2 HOURS) .................................................................................. 8

To access the Dive Planner (Plan Mode) ............................................................................................................. 68

To access the Time to Fly Countdown ................................................................................................................. 69

To access the Time to Desaturate Countdown .................................................................................................... 70

LOG MODE .......................................................................................................................................................... 70

AFTER THE FIRST 2 HOURS ................................................................................................................................... 73

DOWNLOADING DATA TO A PC .............................................................................................................................. 74

RESET (CLEAR) ............................................................................................................. 75

SIMULATOR (DEMO) MODE .......................................................................................... 77

CONTENTS (con inued)

CARE, MAINTENANCE, AND SERVICE......................................................................... 83

CARE AND CLEANING ............................................................................................................................................. 84

INSPECTIONS AND SERVICE ................................................................................................................................. 85

BATTERY REPLACEMENT ...................................................................................................................................... 8

REFERENCE ................................................................................................................... 91

DECOMPRESSION MODEL ..................................................................................................................................... 92

TISSUE COMPARTMENT CONTROL ...................................................................................................................... 92

NO DECOMPRESSION LIMITS ................................................................................................................................ 93

OXYGEN EXPOSURE LIMITS ................................................................................................................................. 94

ALTITUDE SAMPLING/COMPENSATION ................................................................................................................ 95

FLYING AFTER DIVING ............................................................................................................................................ 9

SPECIFICATIONS ........................................................................................................... 98

GLOSSARY ................................................................................................................... 103

SERVICE RECORD ....................................................................................................... 107

CONTENTS (con inued)

Pay special a en ion o i ems marked wi h his Warning symbol.

 The ATMOS 2 is not intended fo use by milita y o comme cial dive s.

 The ATMOS 2 is intended fo use by ec eational dive s who have successfully completed a

nationally ecognized cou se in scuba diving, and diving with en iched nit ogen-oxygen

(nit ox) mixtu es.

 It must not be used by unt ained pe sons who may not have knowledge of the potential

isks and haza ds of scuba diving, and diving with nit ox.

 You must obtain scuba ce tification, and ce tification in diving with nit ox befo e using the

ATMOS 2, if you have not al eady done so.

 It is NOT fo use by milita y and comme cial dive s.

 It should NOT be utilized fo any competitive, o epetitive squa e wave o unplanned de-

comp ession diving, it is intended solely fo ec eational use and multilevel diving.

 As with all unde wate life suppo t equipment, imp ope use o misuse of this p oduct can

cause se ious inju y o death.

 Conduct you dives in such a manne so as to insu e that you continuously check the

compute 's p ope function.

 If you do not fully unde stand how to use this dive compute , o if you have any questions,

you should seek inst uction in its use f om you autho ized AERIS deale befo e you utilize

this p oduct.

 Neve pa ticipate in sha ing o swapping of a dive compute . Doing so may esult in inju y

o death.

 If you exceed ce tain limits, the ATMOS 2 will not be able to tell you how to get safely back

to the su face. These situations exceed tested limits and can esult in loss of some ATMOS

2 functions fo 24 hou s afte the dive in which a Violation occu ed.

 The ATMOS 2 ente s Immediate Violation Mode when a situation totally exceeds its capacity

to p edict an ascent p ocedu e. These dives ep esent g oss excu sions into decomp es-

sion that a e beyond the bounda ies and spi it of the ATMOS 2 design. If you a e following

these dive p ofiles, AERIS advises you not to use an ATMOS 2 dive compute .

WARNINGS AND SAFETY RECOMMENDATIONS

FEATURES and DISPLAYS

WELCOME TO AERIS !

AND

THANK YOU FOR CHOOSING THE ATMOS 2 !

Your ATMOS 2 presents the information that you need before, during, and after your air (or nitrox)

dives using a combination of easy to read disp ays and identification icons. It can a so be set to oper-

ate simp y as a digita depth gauge/timer. This instructiona guide is intended to he p you become fa-

mi iar with the functions and features avai ab e and show you examp es of disp ays that you cou d ex-

pect to see in the various operationa modes. Re ax and read through the comp ete owner's guide.

Remember that the ru es you earned in your basic scuba certification course(s) sti app y to the div-

ing you wi do whi e using a dive computer - some wi become even more important. Techno ogy is

no substitute for common sense, and a dive computer on y provides the person using it with data, not

the know edge to use it.

Since the ATMOS 2 can be used when diving with either Air or Nitrox, the term Breathing Gas is

used in this manua .

 Breathing Gas is the gaseous mixture breathed during a dive.

 Air is a breathing gas that contains approximate y 21% oxygen and 79% nitrogen (nature's com-

mon nitrogen-oxygen mixture).

 Nitrox is a nitrogen-oxygen breathing gas that contains a higher fraction of oxygen (22 to 50%)

than air.

CONTROL BUTTONS

The two Contro Buttons a ow you to se ect disp ay options, access specific information when you

want to see it, and activate the Back ight.

The Front button is named Advance (Fig. 1a) and the Side button Select (Fig. 1b).

BAR GRAPHS

Ni rogen Bar Graph

The Nitrogen Bar Graph (Fig. 1c) represents tissue oading of nitrogen, showing your re ative No De-

compression or Decompression status. As your Depth and E apsed Dive Time increase, segments

wi add to the Graph, and as you Ascend to sha ower depths, the Bar Graph wi begin to recede, in-

dicating that additiona No Decompression Time is a owed for mu ti eve diving.

The Nitrogen Bar Graph monitors 12 different nitrogen compart-

ments simu taneous y and disp ays the one that is in contro of your

dive. It is divided into a green No Decompression (norma ) zone, a

ye ow Caution zone (a so No Decompression), and a red Decom-

pression (danger) zone.

Whi e you cannot provide a guarantee against the occurrence of de-

compression sickness, you may choose your own persona zone of

caution based upon age, physique, excessive weight, etc., to reduce

the statistica risk.

Fig. 1 - Buttons and NiBG

Oxygen (O2) Accumula ion Bar Graph

The O2 Bar Graph (Fig. 2a) represents Oxygen Loading, your re a-

tive oxygen to erance dosage (OTU), showing the maximum of either

per dive accumu ated Oxygen, or 24 hour period accumu ated Oxy-

gen. As your accumu ation increases during the dive, segments wi

add to the Bar Graph, and as oading decreases, it wi begin to re-

cede, indicating that additiona exposure is a owed.

NOTE: Displays associa ed wi h Oxygen and he O2

Bar Graph will only appear if FO2 has been se a a

value o her han 'Air' (e.g., a numerical value).

Variable Ascen Ra e Indica or

The Variab e Ascent Rate Indicator (Fig. 2b) provides a visua repre-

sentation of Ascent Speed (i.e., an ascent speedometer). Green is a

'norma ' rate, ye ow a 'caution' rate, and red is 'Too Fast'. The seg-

ments of the Variab e Ascent Rate Indicator represent 2 sets of

speeds which change at a reference depth of 60 feet (18 meters). Re-

fer to the chart for segment va ues.

WARNING: A dep hs grea er han 60 fee (18

me ers), Ascen Ra es should no exceed 60 fee per

minu e (18 mpm). A dep hs of 60 fee (18 me ers)

and shallower, Ascen Ra es should no exceed 30

fee per minu e (9 me ers per minu e).

Fig. 2 - O2BG & VAR

Variable Ascent Rate ndicator

Deeper than 60 feet (18 m)

Segments Ascent Rate =

Displayed FPM MPM

0 0-20 0 - 6

1 21-30 6.5-9

2 31- 0 9.5-12

3 1-50 12.5-15

51-60 15.5-18

5 >60 >18

60 feet (18 m) & Shallower

Segments Ascent Rate =

Displayed FPM MPM

0 0-10 0 - 3

1 11-15 3.5- .5

2 16-20 5-6

3 21-25 6.5-7.5

26-30 8-9

5 >30 >9

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