Aeris ATMOS ai User manual
ATMOS
DIVE COMPUTER
OPERATING MANUAL
ai
2
LIMITED TWO-YEAR WARRANTY
For details, refer to the Product Warranty Registration Card provided.
COPYRIGHT NOTICE
This owners guide is copyrighted, all rights are reserved. It may not, in whole or in part, e copied, photocop-
ied, reproduced, translated, or reduced to any electronic medium or machine reada le form without prior con-
sent in writing from AERIS / 2002 Design.
ATMOS ai Operating Manual, Doc. No. 12-7153
© 2002 Design 2002
San Leandro, CA USA 94577
TRADEMARK NOTICE
AERIS, the AERIS logo, ATMOS ai, and the ATMOS ai 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 ai 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 ai dive computer model is ased upon the latest research and experiments in decompression theory.
Still, using the ATMOS ai, just as using the U.S. Navy (or other) No Decompression Ta les, is no guar-
antee of avoiding decompression sickness, i.e. the ends. Every divers 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.
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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
Tank Pressure Display .......................................................................................................................................... 11
Depth Displays ...................................................................................................................................................... 11
Time and Date Displays ....................................................................................................................................... 12
Temperature Display ............................................................................................................................................. 12
AUDIBLE ALARM & LED .......................................................................................................................................... 13
BACKLIGHT .............................................................................................................................................................. 14
POWER SUPPLY ...................................................................................................................................................... 15
Battery ndicator ................................................................................................................................................... 15
Low Battery Condition .......................................................................................................................................... 15
FO2 MODE ................................................................................................................................................................ 16
FO2 50% Default .................................................................................................................................................. 17
DI E TIME REMAINING ........................................................................................................................................... 18
ACTIVATION AND SETUP .............................................................................................. 21
ACTI ATION .............................................................................................................................................................. 22
SURFACE MODE ...................................................................................................................................................... 23
SET MODES .............................................................................................................................................................. 24
ENTER NG SETT NGS -SET MODE #1 .............................................................................................................. 25
ENTER NG SETT NGS -SET MODE #2 .............................................................................................................. 29
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PRE DIVE PLAN MODE ................................................................................................. 45
DI E PLANNER ......................................................................................................................................................... 46
DIVE MODES .................................................................................................................. 49
DI E MODE BAR GRAPHS ...................................................................................................................................... 50
CONTROL OF DISPLAYS ......................................................................................................................................... 50
NO DECOMPRESSION DI E MODE ....................................................................................................................... 51
DECOMPRESSION DI E MODE .............................................................................................................................. 54
IOLATION MODES .................................................................................................................................................. 56
Conditional Violation Mode ................................................................................................................................... 57
Delayed Violation Modes ...................................................................................................................................... 58
mmediate Violation Mode and Violation Gauge Mode ........................................................................................ 60
HIGH PO2 DI E MODE ............................................................................................................................................. 61
HIGH OXYGEN ACCUMULATION ............................................................................................................................ 64
USER SET DIGITAL GAUGE MODE ........................................................................................................................ 65
POST DIVE MODES ....................................................................................................... 67
POST DI E SURFACE MODE .................................................................................................................................. 68
TRANSITION PERIOD .............................................................................................................................................. 68
AFTER THE TRANSITION PERIOD (THE FIRST 2 HOURS) .................................................................................. 70
To access the Dive Planner (Plan Mode) ............................................................................................................. 70
To access the Time to Fly Countdown ................................................................................................................. 71
To access the Time to Desaturate Countdown .................................................................................................... 71
LOG MODE .......................................................................................................................................................... 72
AFTER THE FIRST 2 HOURS .................................................................................................................................. 75
DOWNLOADING DATA TO A PC .............................................................................................................................. 76
SIMULATOR (DEMO) MODE .......................................................................................... 77
CONTENTS (co ti ued)
5
RESET PROCEDURE ..................................................................................................... 84
GENERAL ....................................................................................................................... 85
CARE AND CLEANING ............................................................................................................................................. 86
INSPECTIONS AND SER ICE ................................................................................................................................. 87
BATTERY REPLACEMENT ...................................................................................................................................... 88
ALTITUDE SAMPLING/COMPENSATION ............................................................................................................... 93
SPECIFICATIONS ..................................................................................................................................................... 94
SERVICE RECORD ........................................................................................................ 99
CONTENTS (co ti ued)
Pay special atte tio to items marked with this WARNING
symbol.
6
LCD LAYOUT
Components:
a. Nitrogen Loading Bar Graph
b. Oxygen Accumulation Bar
Graph
c. Variable Ascent Rate ndicator
d. Select (bottom) Button
e. Advance (front) Button
f. Graphic - Demo Mode
g. con - Air Time Remaining
h. con - Set Alarm
i. con - Log Mode
j. Graphic - Depth
k. Graphic - Ascent Too Fast
l. con - Operating Mode
m. con - Time
n. con - Safety Stop
o. Graphic - Operating Mode
p. Graphic - Pressure
q. con - Ascend Arrow
con - Deco Ceiling Bar
con - Descend Arrow
r. Battery Consumption ndicator
s. con - Temperature
t. Graphic - Maximum Depth
a
b
c
d
e
r
s
f
m
g
hj
k
l
o
p
q
i
n
t
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FEATURES and DISPLAYS
WARNING: Prior to divi g with the ATMOS ai, you must also read
a d u dersta d the AERIS Dive Computer Safety & Refere ce
Ma ual, Doc. No. 12-7203, which provides Importa t War i gs a d
Safety Recomme datio s as well as ge eral product i formatio .
8
WELCOME TO AERIS !
AND
THANK YOU FOR CHOOSING THE ATMOS ai !
Your ATMOS ai presents the information that you need before, during, and after your air (or nitrox)
dives using a combination of easy to read displays and identification icons. It can also be set to
operate simply as a digital depth gauge/timer.
This instructional guide is intended to help you become familiar with the functions and features
available and show you examples of displays that you could expect to see in the various opera
tional modes. Ensure that you read through this complete Owner's Guide.
Remember that the rules you learned in your basic scuba certification course(s) still apply to the
diving you will do while using a dive computer some will become even more important. Tech
nology is no substitute for common sense, and a dive computer only provides the person using it
with data, not the knowledge to use it.
Since the ATMOS ai can be used when diving with either Air or Nitrox, the term Breathing Gas is
used in this manual.
Breathing Gas is the gaseous mixture breathed during a dive.
Air is a breathing gas that contains approximately 21% oxygen and 79% nitrogen (nature's
common nitrogen oxygen mixture).
Nitrox is a nitrogen oxygen breathing gas that contains a higher fraction of oxygen than air
(>21%).
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CONTROL BUTTONS
The two Control Buttons allow you to select display options, access specific information when
you want to see it, and activate the Unit and the Backlight.
The Front button is named Advance (Fig. 1a) and the Bottom/Side button Select (Fig. 1b).
BAR GRAPHS
Nitroge Bar Graph
The Nitrogen Bar Graph (Fig. 1c) represents tissue loading of nitrogen, showing your relative no
decompression or decompression status. As your depth and elapsed dive time increase, segments
will add to the Graph, and as you ascend 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 compart
ments simultaneously and displays the one that is in control of your
dive. It is divided into a green No Decompression (normal) zone, a
yellow Caution zone (also No Decompression), and a red Decom
pression (danger) 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 age, physique, excessive weight, etc., to reduce
the statistical risk.
Fig. 1 - Buttons and NiBG
a
bc
10
Oxyge Accumulatio Bar Graph (O2BG)
The O2 Bar Graph (Fig. 2a) represents oxygen loading, your rela
tive oxygen tolerance dosage (OTU), showing the maximum of ei
ther per dive accumulated oxygen, or 24 hour period accumulated
oxygen. As your accumulation increases during the dive, segments
will add to the Bar Graph, and as loading decreases, it will begin to
recede, indicating that additional exposure is allowed.
NOTE: Displays associated with oxyge a d the
O2 Bar Graph will o ly appear if FO2 has bee set
at a value other tha 'Air' (e.g., a umerical value).
Variable Asce t Rate I dicator (VARI)
The Variable Ascent Rate Indicator (Fig. 2b) provides a visual rep
resentation of ascent speed (i.e., an ascent speedometer). Green is
a 'normal' rate, yellow a 'caution' rate, and red is 'Too Fast'. The
segments of the Variable Ascent Rate Indicator represent 2 sets of
speeds which change at a reference depth of 60 feet (18 meters).
Refer to the chart for segment values.
WARNING: At depths greater tha 60 feet (18
meters), asce t rates should ot exceed 60 feet per
mi ute (18 mpm). At depths of 60 feet (18 meters)
a d shallower, asce t rates should ot exceed 30
feet per mi ute (9 meters per mi ute).
Fig. 2 - O2BG and 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
a
b
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