SCUBAPRO-UWATEC ALADIN AIR Z O2 Technical information

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Operating Manual
Smart PRO
Smart COM
®
SWISS MADE BY UWATEC AG
Safety considerations
You must carefully read and understand this entire manual before using your new computer.
WARNING
Diving has many inherent risks. Even if you follow the instructions of this
manual in a careful manner, it is still possible that you may be seriously injured
or die from decompression sickness, oxygen toxicity or some other inherent
risk of scuba with Nitrox or compressed air. Unless you are fully aware of these
risks and are willing to personally accept and assume responsibility for those
risks, do not use the computer!
Guidelines for the use of your UWATEC dive computer:
The following guidelines are derived from the latest medical research and the recommendations of the
American Academy of Underwater Sciences for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness
or oxygen toxicity will not occur.
• This computer is designed for dives with Nitrox (to a max.100% O2) and compressed air (21%O2) only.
Do not use the computer for dives made with other mixed gases.
• It is absolutely necessary to check the set mixture before each dive and to compare it to the gas mixture
currently used. Always remember: setting an incorrect mixture carries an inherent risk of decompression
sickness and/or oxygen toxicity! Maximum deviation from the measured mixture must not exceed 1%
O2. An incorrect gas mixture can be lethal!
• Only use this computer with open circuit breathing systems. The computer must be set for a determined gas mixture.
• Only use this computer for diving with an independent breathing apparatus. The computer is not
designed for long term exposures with Nitrox.
• Always observe the visual and audible alarm signals of the computer. Avoid situations of increased risk
which are marked with a warning sign in this operating manual.
• If the ascent arrow appears, start to ascend.
• If the flashing ascent arrow appears, start to ascend immediately.
• This computer has a ppO2 warning, the default limits of which are set at 1.4 bar ppO2max. This limit
can be adjusted via SmartTRAK. An alteration of the ppO2max to higher than 1.6 bar is dangerous and
we do not recommend this.
• Frequently check the "oxygen clock" (CNS O2), especially in the range higher than 1.4 bar ppO2.
Ascend and finish the dive if the CNS O2 exceeds 75%.
• Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas mixture in use.
• Always check the diving limits considering the oxygen content and standard sports diving procedures
(decompression sickness, oxygen toxicity).
• In accordance with the recommended maximum diving limit of all instructional agencies, do not dive
deeper than 40 metres/130 feet.
• The danger of nitrogen narcosis has to be taken into consideration. The computer gives no warning about
this.
• On all dives, with or without dive computer, make a safety stop for at least 3 minutes at 5 metres (15
feet).
• All divers using dive computers to plan dives and indicate or determine decompression status must use
their own computer, which they take with them on all dives.
• If the computer fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 ft) should be
initiated immediately.
• Comply with the ascent rate and carry out any decompression stop required. If the computer should
fail for any reason, you must ascend at a rate of 10m (30 feet) per minute or less.
• On any given dive, both divers in a buddy pair must follow the most conservative dive computer for
that particular dive.
• Never dive without a buddy. The computer does not substitute for a dive buddy.
• Only make dives that are appropriate to your level of dive training. A dive computer does not increase
your knowledge of diving.
• Always dive with back-up instruments. Make sure that you always use back-up instrumentation including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, and have access
to decompression tables whenever diving with a dive computer.
2
UWATEC® Smart dive computers
I
Safety considerations
Avoid repeated ascents and descents (yo yo diving).
Avoid repeated heavy workload while at depth.
Plan the dives to be shorter if they are made in cold water.
After finishing the decompression or at the end of a no-stop dive, the final stage of the ascent should
be as slow as possible.
• You MUST be familiar with all signs and symptoms of decompression sickness before using this computer! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms
occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay
between the onset of symptoms and the treatment for decompression sickness.
• Only dive with Nitrox after you have been thoroughly instructed by a recognised institution.
Repetitive dives
• Do not start your next dive before your CNS O2% status has dropped below 40%.
• Diving with Nitrox: make sure your surface interval is long enough (just like diving with compressed
air). Plan for a minimum surface interval of two hours. Oxygen, too, needs sufficient time to leave the
body.
• Match gas mixture to the intended dive.
is visible on the display.
• Do not attempt a repetitive dive if the microbubble warning
• Plan a day without diving once a week.
• If you have to change computers, wait at least 48 hours before carrying out your next dive.
NO
Altitude and diving
• Do not dive at altitudes higher than 4000 m (13000 ft).
• After a dive do not rise to altitudes that the computer prohibits via the flashing altitude
segments (see page 21).
Flying after diving
• After diving, wait at least 24 hours prior to flying.
The Smart PRO and Smart COM dive instruments are personal protective equipment in compliance with
the essential safety requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica
12, I-16128 Genoa, notified body no. 0474, have certified their conformity with the European Standard
EN 13319:2000 and, limited to Smart COM with the European Standard EN 250:2000.
EN250:2000 Respiratory equipment - Open-circuit self contained compressed air diving apparatus Requirements, testing, marking (pressure gauge test).
EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices Functional and safety requirements, test methods. Any information on decompression obligation displayed
by equipment covered by this standard is explicitly excluded from its scope.
UWATEC® Smart dive computers
3
English
•
•
•
•
Introduction
Congratulations on purchasing a Smart PRO or Smart COM dive computer and welcome to UWATEC. From
now on you will enjoy the assistance of the most extraordinary dive computer - equipped with UWATEC's
most innovative technology - while diving.
This operating manual provides full information on the operation and functions of UWATEC Smart PRO
and Smart COM dive computers. To make this manual easier to read we will use the term „Smart“ as an
abbreviation for „UWATEC Smart PRO diving computer“ and „UWATEC Smart COM diving computer“
throughout this booklet. Information which is valid only for Smart COM is marked with „COM“.
We thank you for choosing Smart and we hope you will enjoy safe dives in the future! Further information
on UWATEC Smart dive computers and other products by UWATEC can be found on our web page at
www.uwatec.com.
Safety considerations
Dive computers provide divers with data; they, however, do not provide the knowledge how this data
should be understood and applied. Dive computers cannot replace common sense! You must therefore
carefully read and understand this entire manual before using your Smart.
Important remarks concerning signal words and symbols
This operating manual makes use of the following icons to indicate especially important comments:
Remarks
Information and tips which are important for optimal use of the functions of
Smart.
Danger!
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
The following symbols are used in the operating manual:
Flashing display
-> Page reference
e.g. ->10
COM Information valid only for Smart COM
Audible signals
4 sec
Audible attention signal
Audible alarm signal
Instructions for manual input
–+E
B
Operating instruction for manual input
Example: bridging contacts B and E
4/2005, Copyright© by UWATEC Switzerland
4
UWATEC® Smart dive computers
Quick reference
I
Microbubble level icon (input / MB level reduced)
Ready for input (O2 mix, MB level)
Service icon
O2 mix / Microbubble level /
Battery capacity
%
F
C
Temperature
Do not dive icon /
Microbubble warning
DEPTH
Do not fly icon
Dive time / No-fly time
DIVE TIME
NO
Current depth
NO
h
CNS O2%
Ascent obligation
Altitude sections
Too fast ascent
Total ascent time / Dive number
SPEED
Ascent time icon
Desaturation time indicator
DESAT
ft
h
m
DECO STOP
LEVELSTOP
NO STOP
Maximum depth
Logbook indicator
% LOG
S
L
O
W
English
O2 mix icon (input)
Logbook icon
Dive planner icon
DECO INFO
MAX.DEPTH
Decompression stop obligation
Ignored decompression stop
Level stop indicator
No-stop indicator
Decompression stop indicator
No-stop time / Decompression stop duration
MB no-stop time / Level stop duration
Duration of microbubble warning
Desaturation time / Duration of surface interval
Decompression depth / Level stop depth
Oxygen toxicity CNS O2% / Ascent rate
TANK DATA
Tank pressure
warning
Increased workload
warning
psi
bar
Tank pressure / Gas consumed
RBT
RBT warning
Remaining Bottom Time RBT
COM
Operating scheme
Start / Enter
DEPTH
Display
switched off
+ / Navigate
– / Navigate
Dive planner
DECO INFO
MAX.DEPTH
Logbook
29
• Display switches off automatically after
3 minutes without operation.
• The backlight can be switched on by pressing Smart PRO above the display, and
Smart COM at the right hand side of the
display.
DIVE TIME
31
Switching on
9
COM Tank pressure
>8bar/116psi
O2 mix
14
Microbubble level 22
%
C
DIVE TIME
DEPTH
Navigation
DESAT
h
DECO INFO
MAX.DEPTH
(
)
+ Surface
– interval
%
DEPTH
DIVE TIME
%
C
DEPTH
DIVE TIME
Battery capacity
9
%
LOG
DIVE TIME
%
DIVE TIME
DIVE TIME
NO STOP
DECO INFO
MAX.DEPTH
DECO INFO
MAX.DEPTH
+ Bottom time
–
Exit
UWATEC® Smart dive computers
+ Dive number
–
Exit
+
–
Percentage
of oxygen
Confirmation
+
–
Microbubble
level
Confirmation
5
List of chapters
I
Safety considerations
Introduction
Important remarks concerning signal words
and symbols
Quick reference / Operating scheme
List of chapters
___________________________________ 2
___________________________________ 4
___________________________________ 4
___________________________________ 5
___________________________________ 6
II
1
System and operation
System description
___________________________________ 8
___________________________________ 8
2
Operation
2.1 Operating elements
2.2 SmartTRAK
2.3 Switching on the display
2.4 Checking the battery capacity
2.5 Selection and activation of user functions
2.6 Active backlight
2.7 Switching off the display
___________________________________ 8
___________________________________ 8
___________________________________ 8
___________________________________ 9
___________________________________ 9
___________________________________ 9
__________________________________ 10
__________________________________ 10
3
SOS mode
__________________________________ 10
4
COM Setting up Smart COM
4.1 Mounting the high pressure hose to the first stage
__________________________________ 10
__________________________________ 10
III Diving with Smart
__________________________________ 11
1 Terminology / Symbols
__________________________________ 11
1.1 General terminology / Display during no-stop phase __________________________________ 11
1.2 Display during decompression phase /
Remaining Bottom Time (RBT)
__________________________________ 11
__________________________________ 12
1.3 Nitrox information (O2 information)
2
Attention messages and alarms
2.1 Attention messages
2.2 Alarms
__________________________________ 13
__________________________________ 13
__________________________________ 13
3
Preparation for the dive
3.1 Setting the gas mixture
3.2 Setting the MB level
3.3 COM Additional preparation for the dive with
Smart COM
3.4 Inspection
__________________________________ 14
__________________________________ 14
__________________________________ 14
4
6
Functions during the dive
4.1 Immersion
4.2 Dive time
4.3 Current depth
4.4 Maximum depth
4.5 Ascent rate
4.6 Partial pressure of oxygen (ppO2) /
Maximum Operating Depth (MOD)
4.7 Oxygen toxicity (CNS O2%)
4.8 COM Tank pressure
4.9 COM Remaining Bottom Time (RBT)
4.10 Decompression information
__________________________________ 14
__________________________________ 14
__________________________________ 15
__________________________________ 15
__________________________________ 15
__________________________________ 15
__________________________________ 15
__________________________________ 15
__________________________________ 16
__________________________________ 17
__________________________________ 17
__________________________________ 18
__________________________________ 18
UWATEC® Smart dive computers
I
5
Functions at the Surface
5.1 End of a dive
5.2 Desaturation time
5.3 No-fly time
5.4 Microbubble warning
__________________________________ 20
__________________________________ 20
__________________________________ 20
__________________________________ 20
__________________________________ 20
6
Diving in mountain lakes
6.1 Altitude ranges
6.2 Prohibited altitude
6.3 Decompression dives in mountain lakes
__________________________________ 21
__________________________________ 21
__________________________________ 21
__________________________________ 21
IV Diving with microbubble levels (MB)
1 Comparison of dives with MB level 0 and MB level 5
__________________________________ 22
__________________________________ 22
2
Terminology
2.1 Display during microbubble (MB) no-stop phase
2.2 Display during level stop phase
__________________________________ 23
__________________________________ 23
__________________________________ 23
3
Preparation for a dive with microbubble levels (MB levels) __________________________________ 24
3.1 Setting the MB level
__________________________________ 24
4
Functions during the dive with microbubble levels
4.1 Level stop information
4.2 Total time of ascent
4.3 Decompression obligation
4.4 Level stop and deco stop
__________________________________ 24
__________________________________ 24
__________________________________ 25
__________________________________ 25
__________________________________ 26
5
Complete a dive with MB levels
__________________________________ 26
V Gauge mode
__________________________________ 27
VI Dive planner
1 Planning a no-stop dive
__________________________________ 29
__________________________________ 29
2
__________________________________ 30
Leaving the dive planner
VII Logbook
1 Survey
__________________________________ 31
__________________________________ 31
2
__________________________________ 31
Operating
VIII Appendix
1 Technical Information
__________________________________ 32
__________________________________ 32
2
Maintenance
__________________________________ 32
3
COM Conversion of tank pressure
__________________________________ 33
4
Warranty
__________________________________ 34
5
Index
__________________________________ 35
UWATEC® Smart dive computers
7
English
List of chapters
II System and operation
1 System description
Smart displays all important dive and decompression data. Smart has a data
memory which stores the dive data. The data can be transmitted with an
infrared interface (IrDA) and SmartTRAK software to a Windows® personal
computer. SmartTRAK CD software is included with the Smart package.
Infrared interfaces are available in PC stores. A list of recommended interfaces
is available on the UWATEC homepage (www.uwatec.com).
SmartTRAK
Infrared port
Infrared port
Smart COM
Smart PRO
Smart IR
(Infrared) device
2 Operation
On page 5 you will find an operating schematic.
2.1 Operating elements
Smart has 4 operating contacts B, E, +, – on the outside of the housing.
For manual operation, touch base contact B and any one of the other three
contacts above the display with moistened fingers ("bridging" contacts).
-
+
E
-
+
E
Contact B
Base contact, which has to be touched for all
operations.
Contact E
Enter contact. It serves to switch on Smart and to
confirm or enter the displayed value. It is therefore
comparable to the ENTER or RETURN key of a
keyboard.
B
B
+ / – Contacts
These allow to navigate between menus and, once
inside a menu, to increase or decrease the indicated
value.
2.2 SmartTRAK
With SmartTRAK you can transfer dive data to a personal computer and graphically display the data.
The following settings may be changed with SmartTRAK:
• Unit system
metric/imperial
• Audible attention signal
suppression
selective
• Gauge mode
on / off
• Depth alarm
5 - 100 m
(20 - 330 feet)
• Backlight illumination duration
2-12 sec.
• Maximum partial pressure of
oxygen (ppO2 max)
1-1.95 bar
8
• Time limit to reset the
O2 % mix to air
no reset /
1 - 48 hrs.
• COM Minimum reserve
pressure at the end of
the dive (basis for RBT
calculation)
20 – 120 bar
(300 - 1750 psi)
• COM Tank pressure alarm
50 - 200 bar
(750 - 2900 psi)
• COM Workload sensitivity
25 steps
UWATEC® Smart dive computers
II
2 Operation
The following data may be recalled with SmartTRAK:
• Temperature curve
• COM Workload curve
• Alarms and attention
messages
English
• Number of past dives
• Total duration of past dives
• Atmospheric pressure
• Dive profile
• Logbook
2.3 Switching on the display
• automatically, on submerging in water or when adaptation to atmospheric
pressure is necessary;
• manually by bridging contacts on housing (B-E).
• COM on opening the tank valve (if connected) (Tank pressure ≥ 8 bar / 116 psi).
%
• When Smart is in state of rest no information is displayed
but the atmospheric pressure is continuously monitored. If
h
a higher altitude range is detected, Smart switches on for
% LOG
3 minutes automatically -> 21.
ft
• Smart switches on by bridging the contacts B and E. All
h
m
segments light up for 5 seconds.
DEPTH
DIVE TIME
F
C
DEPTH
DIVE TIME
NO
NO
CNS O2%
DECO INFO
MAX.DEPTH
S
L
O
W
SPEED
DESAT
DECO STOP
LEVELSTOP
NO STOP
DECO INFO
MAX.DEPTH
%
C
DEPTH
O2 Mix
DIVE TIME
Temperature
C
DEPTH
%
Do not fly
symbol
h
No-fly time
DIVE TIME
NO
MAX.DEPTH
DECO INFO
CNS O2%
Oxygen toxicity
%
Afterwards the display shows the selected O2 mix, the
temperature and in certain circumstances an altitude range
(-> 21). Smart COM displays the tank pressure also.
If there is a remaining saturation from the last dive or from
a change of altitude, Smart also displays the <do not fly>
time, the <do not fly> icon, the current altitude range and
the prohibited altitude range (->20).
DESAT
Desaturation time
h
DECO INFO
MAX.DEPTH
DEPTH
MAX.DEPTH
2.4 Checking the battery capacity
After switching on Smart you can check the battery capacity by bridging
contacts B and E. The remaining capacity is displayed for 3 seconds as a
%
percentage. If the value reaches 0%, the battery warning gets activated (-> 13)
and the battery has to be replaced by an authorised SCUBAPRO UWATEC dealer.
For a 7-day diving vacation Smart uses between 2 – 5 % of its battery capacity.
Battery capacity
DIVE TIME
2.5 Selection and activation of user functions
At the surface you can select the dive planner, the logbook
and the functions to enter the O2% mix and the microbubble
level by bridging the contacts + and B or – and B.
DECO INFO
Input microbubble level -> 24
Input O2 mix -> 14
Logbook -> 31
Dive planner -> 29
MAX.DEPTH
DECO INFO
After the selection of the desired function you can activate and deactivate it by
bridging the contacts B and E.
Details to the user functions are to be found on the pages mentioned above.
UWATEC® Smart dive computers
9
2 Operation
2.6 Active backlight
The display of Smart can be illuminated both on the surface
and underwater. The backlight can be switched on by pressing
Smart PRO above the display, and Smart COM at the right hand
side of the display. The light will turn off automatically after 8
seconds or after the time selected via SmartTRAK. The backlight
can only be activated if the computer display is on.
2.7 Switching off the display
• automatically after 3 minutes without operation on the surface.
• COM at the surface: automatically after 3 minutes without a reduction of tank
pressure. The display switches on again after starting to breathe from the tank.
3 SOS mode
Dive time
%
C
DEPTH
DIVE TIME
DECO STOP
m
MAX.DEPTH
DECO INFO
Maximum depth
Violated decompression
Activation: automatic
If the diver remains above a depth of 0,8 m (3 feet) for more than three minutes without observing a prescribed decompression, the computer switches
into SOS mode after the dive and displays <SOS> instead of the depth. The
computer is locked from use for the next 24 hours. The display shows the most
important information of the dive. Desaturation is further calculated including
microbubbles in the tissues. Diving is again possible after 24 hours, but the SOS
mode can influence the calculations of Smart for three days after the incident
due to the possible presence of microbubbles.
If a diver using Smart experiences a diving accident resulting in decompression sickness, the dive can be analysed by means of the infrared interface and
SmartTRAK software.
WARNING
Serious injury or death may result if a diver does not seek immediate treatment should any signs or symptoms of decompression sickness occur after
a dive.
4 COM Setting up Smart COM
HP
4.1 Mounting the high pressure hose to the first stage
The high pressure hose is mounted on the high pressure
outlet (HP outlet) of the first stage of the regulator.
Adapter
1. Mount the high pressure hose on the HP outlet.
If the threads do not match, you can obtain an adapter
from your diving retailer.
2. Tighten the connection with a matching wrench.
10
UWATEC® Smart dive computers
III Diving with Smart
III
1 Terminology / Symbols
1.1 General terminology / Display during no-stop phase
Oxygen toxicity
CNS O2%
Ascent rate
(Only while
ascending)
No-stop phase
Decompression phase
Dive phase during which surfacing is allowed
without stop.
Dive phase during which
surfacing is allowed only
after decompression
stops are completed.
%
SPEED
Temperature
%
C
DEPTH
Dive time
Duration of
the dive (min)
DIVE TIME
CNS O2%
%
DECO INFO
Maximum depth
Maximum depth
reached during
the dive.
TANK DATA
bar
RBT
COM
24min
Current depth
No-stop time
Remaining time
at a given depth
during which ascent 26.2 m
is allowed without
decompression
stop (min)
NO STOP
MAX.DEPTH
O2% Mix
Selected oxygen
fraction
Depth
Time
Current depth
In metres (feet)
Maximum depth
37 min. Dive time
No-stop time
Elapsed bottom time
Tank pressure
Remaining Bottom Time, RBT
1.2 Display during decompression phase / Remaining Bottom Time (RBT)
%
C
DEPTH
Total ascent time to surface (7 min)
Time
TANK DATA
COM
3m
Depth
Decompression stop
All required decompression
stops must be observed.
6m
bar
Deepest decompression
stop depth
DIVE TIME
2 min
Decompression
stop duration
CNS O2%
%
DECO STOP
m
MAX.DEPTH
DECO INFO
Decompression
stop depth
Deepest stage is
displayed.
Decompression
stop duration
Prescribed duration of the
decompression stop at the
displayed decompression
stage (minutes).
UWATEC® Smart dive computers
RBT 21 min
35.7 m
No-stop range
Total ascent time
Including decompression
stops in minutes.
Decompression range
TANK DATA
bar
RBT
COM
Tank pressure
Remaining Bottom Time, RBT
Maximum remaining time at current
depth including all decompression
obligations (minutes).
11
English
The information on the display of Smart varies depending on the kind of dive and the dive phase.
For information about diving with microbubble levels (MB levels) see chapter
IV (-> 22).
1 Terminology / Symbols
1.3 Nitrox information (O2 information)
For dives with compressed air in normal recreational diving, nitrogen is the decisive gas for the decompression calculations. When diving with Nitrox, the risk of oxygen toxicity rises with the increase of the fraction
of oxygen and the increase of depth and can limit dive time and the maximum depth. Smart includes this
in the calculations and displays the necessary information:
<O2% MIX>
Fraction of oxygen: the fraction of oxygen in the Nitrox mixture can be set
between 21% (normal compressed air) and 100% in 1% increments. Your
selected mix will be the basis for all calculations.
ppO2 max
Maximum allowed partial pressure of oxygen: the higher the fraction of oxygen
in the mixture, the shallower the dive depth at which this value of the
partial pressure of oxygen is reached. The depth at which ppO2 max. is reached
is called Maximum Operating Depth (MOD). Default setting is 1.4 bar, but it
can be set by means of SmartTRAK between 1.0 and 1.95 bar. Smart does not
display the entered ppO2 limit, but warns the diver audibly and visually once the
depth is reached at which the ppO2 reaches the maximum allowed value.
The CNS O2% value/alarm is not influenced by the selected ppO2max. setting.
<CNS O2>
WARNING
12
Oxygen toxicity: With the increased
percentage of oxygen, the oxygen in
the tissues (especially in the central
nervous system (CNS)) becomes important. If the partial pressure of oxygen rises above 0.5 bar, the CNS O2
value increases, if the partial pressure
of oxygen is below 0.5 bar, the CNS
O2 value decreases. The closer the
CNS O2 value is to 100%, the closer
the limit where symptoms can occur
-> 17.
ppO2
0,21 bar
CNS O2%
decreases
0,5 bar
CNS O2%
increases
Nitrox diving may only be attempted by experienced divers after proper training
from an internationally recognized agency.
UWATEC® Smart dive computers
2 Attention messages and alarms
III
The audible attention messages (but not the alarms) can be switched off
selectively with SmartTRAK.
2.2 Alarms
WARNING
Serious injury or death may result from failing to
immediately respond to alarms given by Smart.
2.1 Attention messages
Attention messages are communicated to the
diver visually by symbols, letters or flashing figures.
In addition, two short audible sequences can be
heard (in an interval of 4 seconds) in two different
frequencies under water.
4 sec
Alarms are given to the diver visually by flashing
symbols, letters or figures. In addition, an audible
sequence in one frequency can be heard during
the whole duration of the alarm.
(can not be switched
off)
(can be switched off)
Attention messages come up in the following
situations (more information can be found on the
listed pages):
Page
• Maximum Operating Depth /
max. ppO2 is reached
• Set maximum depth is reached
• Oxygen toxicity reaches 75%
• No-stop time = 2 minutes
• Prohibited altitude* (surface mode)
• Entering decompression when diving with L0
• COM Remaining Bottom Time <3 minutes
• COM Tank pressure has reached set warning
level
• COM Increased workload
Diving with microbubble levels (L1-L5):
• MB no-stop time = 0
• MB level stop ignored
• MB level reduced
• Entering decompression when diving
DEPTH
with MB level L1-L5
An alarm occurs in the following situations (more
information can be found on the listed pages):
Page
16
15
17
18
21
19
18
•
•
•
•
Oxygen toxicity reaches 100%
Ignored decompression
COM Remaining Bottom Time = 0
Exceeding the prescribed ascent rate
(Particular scale of beeps, ->16)
• Low battery alarm**
17
19
18
16
see below
17
17
24
25
25
25
Low battery alarm**
The service symbol appears if the battery capacity
reaches 0%.
Take the unit to your
authorised SCUBAPRO
%
UWATEC retailer.
DIVE TIME
* without audible attention beep
**without audible alarm
MAX.DEPTH
UWATEC® Smart dive computers
DECO INFO
13
English
Smart draws the diver’s attention to certain situations and warns the diver of unsafe diving practices.
Attention messages and alarms are always visual and audible under water, only visual at the surface except
the decompression alarm.
3 Preparation for the dive
3.1 Setting the gas mixture
Before every dive and after changing the tank, make sure that the setting of the
gas mixture corresponds to the current mixture used. An incorrect setting causes
Smart to miscalculate this particular dive. If the fraction of oxygen is set too low
this can lead to oxygen poisoning without warning. If the value is set too high
decompression sickness may occur. Inaccuracies in the calculations are carried
over to repetitive dives.
WARNING
To set the gas mixture, Smart must be in user mode.
…
DEPTH
DEPTH
MAX.DEPTH
1. Bridge contacts B and + or B and – until the symbol for the setting of the
O2 mixture appears.
%
…
DIVE TIME
2. Confirm that you wish to change the displayed oxygen fraction by bridging
B and E.
3. Change the oxygen fraction in increments of 1% by bridging contacts B
and + to increase or B and – to decrease (21-100%).
%
+ –
4. Confirm the selected percentage with B and E.
DIVE
TIME
DECO
INFO
Without confirmation the display will disappear after 3 minutes and your
entries will not be accepted.
WARNING
DECO INFO
MAX.DEPTH
The time to reset the O2 % mix to air can be set with SmartTRAK between 1
and 48 hours or to "no reset" (default).
3.2 Setting the MB level
See chapter IV, -> 24.
3.3 COM Additional preparation for the dive with Smart COM
The following description of the preparation of a dive is based on the assumption that the high pressure hose
is correctly mounted on the HP outlet and Smart COM is connected with the HP hose (-> 10).
WARNING
If the high pressure hose is not correctly mounted, it will not perform
properly and serious injury or death may result.
1. Mount the regulator together with the high pressure hose on the tank.
WARNING
2. If present, check the reserve valve of your tank, the reserve valve must be
open.
TANK DATA
3. Open the valve and check the tank pressure (after approx. 10 sec.). If the
pressure is insufficient, change the tank.
bar
3.4 Inspection
%
F
C
DEPTH
Make an inspection before each dive:
DIVE TIME
NO
NO
h
CNS O2%
S
L
O
W
1. Switch on Smart (B-E).
% LOG
SPEED
DECO STOP
LEVELSTOP
NO STOP
ft
h
m
DESAT
2. Check the test display: are all the elements of the display activated? Use
Smart only if all elements of the display are activated.
DECO INFO
MAX.DEPTH
TANK DATA
psi
bar
RBT
3. COM Check the connections and instruments for leaks. Never dive with
leaky equipment!
COM
14
UWATEC® Smart dive computers
4 Functions during the dive
4.2 Dive time
%
C
DEPTH
DIVE TIME
The whole time spent below a depth of 0.8m (3 feet) is displayed as dive time
in minutes. The time above 0.8m (3 feet) is counted as dive time only if the
diver descends again below 0.8m (3 feet) within 5 minutes.
While the dive time is running, the colons on the right of the figures are
flashing in one second intervals. Maximum dive time displayed is 199 minutes.
NO STOP
DECO INFO
MAX.DEPTH
If a dive lasts longer than 199 minutes the dive time display starts
again at 0 minutes.
Dive time
4.3 Current depth
Current depth is given in 10 cm increments (1 foot). At a diving
depth of less than 0.8 m (3 ft) the display shows <– – –>.
%
C
DEPTH
DIVE TIME
%
C
DEPTH
DIVE TIME
NO STOP
DECO INFO
MAX.DEPTH
DECO INFO
MAX.DEPTH
Depth measurement is based on freshwater. Therefore,
Smart shows a slightly greater depth when diving in
salt water, depending on the salinity of the water. No
calculation however is affected.
Current depth
4.4 Maximum depth
%
C
DEPTH
DIVE TIME
Maximum depth is only displayed if it exceeds the current depth by more than
1 m (3 feet) (maximum indicator function).
CNS O2%
%
NO STOP
DECO INFO
MAX.DEPTH
Maximum depth
4 sec
%
C
DEPTH
DIVE TIME
CNS O2%
%
NO STOP
Set maximum depth reached
If the maximum depth set with SmartTRAK has
been reached (default 40m/130 feet), the current
depth will flash and the ascent arrow will be
displayed.
Ascend until the ascent arrow disappears.
DECO INFO
MAX.DEPTH
WARNING
4.5 Ascent rate
%
C
DEPTH
DIVE TIME
S
L
O
W
%
SPEED
NO STOP
MAX.DEPTH
DECO INFO
Optimal ascent rate varies depending on depth between 7 and 20 m/min (23
and 67 ft/min). It is displayed as a percent of the reference variable ascent
rate. If the ascent rate is greater than 100% of the set value, the black arrow
<SLOW> appears. If the ascent rate exceeds 140%, the arrow starts flashing.
Smart provides an audible alarm if the ascent rate is 110% or greater. The
intensity of the alarm increases in direct proportion to the degree that the
prescribed ascent rate is exceeded.
Ascent rate
UWATEC® Smart dive computers
15
English
III
4.1 Immersion
After immersion, starting at a depth of about 0.8 m (3 ft), all diving functions are monitored, i.e. depth and
dive time displayed, maximum depth stored, saturation of tissues calculated, no-stop time or decompression prognosis determined, ascent rate controlled and displayed and the correctness of the decompression
procedure supervised. In addition, Smart COM also shows the tank pressure and about 2 minutes into the
dive the Remaining Bottom Time (RBT) is displayed.
4 Functions during the dive
WARNING
The prescribed ascent rate must be observed at all times! Exceeding the
prescribed ascent rate can lead to microbubbles in the arterial circulation
which can lead to serious injury or death due to decompression sickness.
• In case of an improper ascent Smart may require a decompression stop even
within the no-stop phase because of the danger of microbubbles formation.
• The decompression duration necessary for the prevention of microbubbles can
increase massively if the ascent rate is exceeded.
• From great depth a slow ascent may cause heightened saturation of tissues
and an extension of both decompression duration and total ascent time.
At shallow depth, a slow ascent may shorten the decompression duration.
• Display of the ascent rate has the priority over <CNS O2>.
WARNING
Ascent rate
Visual
alarm
%
S
L
O
W
%
S
L
O
W
%
S
L
O
W
SPEED
SPEED
SPEED
%
SPEED
Audible alarm
S
L
O
W
Reduce ascent rate
Excessive ascent rates for longer periods are entered in the logbook.
4.6 Partial pressure of oxygen (ppO2 max) / Maximum Operating Depth (MOD)
The maximum partial pressure of oxygen ppO2 max (default 1.4 bar) determines
4 sec
the Maximum Operating Depth (MOD). Diving deeper than the MOD will expo%
se the diver to oxygen partial pressures higher than the set maximum level.
C
DEPTH
DIVE TIME
CNS O2%
The ppO2 max can be set by means of SmartTRAK between 1.0 and 1.95 bar. The
set value and the information about the current ppO2 are not displayed.
%
NO STOP
MAX.DEPTH
DECO INFO
WARNING
The MOD is a function of ppO2 max and the mixture used. If during the dive the
MOD is reached or exceeded Smart sends an audible attention message, the
ascent arrow appears and the current depth display starts flashing.
Ascend to a shallower depth in order to diminish the danger of oxygen
poisoning.
WARNING
16
• The MOD should not be exceeded. Disregarding the warning can lead to
oxygen poisoning.
• ppO2 max should not be set higher than 1.6 bar
UWATEC® Smart dive computers
III
4 Functions during the dive
4.7 Oxygen toxicity (CNS O2%)
%
Smart calculates oxygen toxicity from depth values, time and the gas mixture
and displays it in the location of the ascent rate. The toxicity is expressed in 1%
increments of a maximum tolerated value (O2 clock). The symbol <CNS O2> is
%
displayed together with the percentage.
C
DEPTH
DIVE TIME
English
CNS O2%
NO STOP
DECO INFO
MAX.DEPTH
Oxygen toxicity
WARNING
4 sec
%
C
DEPTH
An audible attention signal goes off if oxygen toxicity reaches 75%. The symbol <CNS O2> flashes
and the ascent arrow appears.
DIVE TIME
Ascend to shallower depth to decrease oxygen
loading.
CNS O2%
%
NO STOP
DECO INFO
MAX.DEPTH
WARNING
%
C
DEPTH
DIVE TIME
NO
CNS O2%
%
When oxygen toxicity reaches 100%, an audible
alarm goes off every 4 seconds. <CNS O2>, the
precentage value and the ascent arrow flash.
Danger of oxygen toxicity!
Start ascent at once.
NO STOP
DECO INFO
MAX.DEPTH
• During an ascent and if the CNS O2% value does not increase anymore (due to
a lower partial pressure of oxygen), the audible warning is suppressed.
• During the ascent, the display of the oxygen toxicity is replaced by the ascent
rate. If the ascent is stopped, the display changes back to the indication of the
CNS value.
4.8 COM Tank pressure
Tank pressure is indicated in the lower display.
The tank pressure is also used for the calculation of the remaining bottom time (RBT) and the workload.
TANK DATA
bar
4 sec
WARNING
RBT
TANK DATA
When the tank pressure reaches the set warning
pressure (SmartTRAK) an audible alarm goes off and
the tank symbol is shown.
Default value of the warning pressure: 100 bar
(1450 psi).
bar
Do not dive any deeper. Start to ascend soon.
RBT
4 sec
TANK DATA
bar
RBT
UWATEC® Smart dive computers
WARNING
In case of increased workload, Smart COM displays
a lung symbol in the lower display and an audible
attention message occurs.
In order to prevent additional saturation, reduce
exertion, relax and breathe more slowly.
17
4 Functions during the dive
TANK DATA
4.9 COM
Remaining Bottom Time (RBT)
RBT is the time left at the current depth until the point of time when the ascent must
bar
be started. The RBT is shown in the lower display. The RBT is calculated on the basis
of the current tank pressure, breathing rate, the temperature, and the dive data
RBT
so far recorded. The RBT is based on the assumption that the tank pressure should
amount to the set pressure (default 40 bar/600 psi) at the end of the dive. Alterations
can be made with SmartTRAK. A graphic representation of RBT is on page 11.
WARNING
Never allow the RBT to go below three minutes. If the RBT goes below three
minutes there is a danger of insufficient supply of gas mixture for the ascent
as well as an increased risk of decompression sickness, and serious injury or
death may result!
Correct calculation of RBT when using a reserve or “J“ type valve is possible
only if the reserve function of the valve is in the open (down) position during
the dive.
4 sec
WARNING
TANK DATA
bar
If the RBT drops below three minutes, an audible
attention signal is activated, the ascent arrow is
displayed and the tank icon and RBT start flashing.
Start ascent immediately.
RBT
WARNING
RBT < 3 minutes
The RBT value should never reach <0:>. With RBT=0
the remaining tank reserve may not be sufficient for
the ascent.
When the last minute has passed (RBT=0) an audible
alarm is activated every 4 seconds. The RBT, the
ascent arrow and the tank icon start flashing. The
audible alarm on exceeding the RBT is suppressed
at depths less than 6.5 m (21 ft) if Smart COM is in
the no-stop phase.
TANK DATA
bar
RBT
Start ascent at once
RBT = 0 minutes
4.10 Decompression information
No-stop time is displayed if no decompression stops are necessary. The arrow NO STOP
decompression stops are necessary. The figures indicate no-stop time in minutes.
%
C
DEPTH
DIVE TIME
• No-stop display <99:> means remaining time of 99 minutes or
more.
• No-stop time is calculated on line and influenced by the current
workload and current water temperature.
NO STOP
DECO INFO
MAX.DEPTH
WARNING
No-stop time
4 sec
%
C
DEPTH
is visible if no
DIVE TIME
CNS O2%
If no-stop time drops below 3 minutes, an audible
attention signal is activated and the no-stop value
begins to flash. If no-stop time is less than 1 minute,
the no-stop display shows the flashing value "0".
In order to prevent a decompression dive, ascend
slowly until the no-stop time is 5 minutes or more.
%
NO STOP
MAX.DEPTH
18
DECO INFO
WARNING
Dives that require decompression stops are not
recommended.
UWATEC® Smart dive computers
%
C
DEPTH
DIVE TIME
CNS O2%
%
DECO STOP
m
DECO INFO
MAX.DEPTH
Decompression
stop depth
Decompression
time
DIVE TIME
NO
CNS O2%
%
DECO STOP
m
DECO INFO
MAX.DEPTH
The decompression alarm is activated if the decomDECOSTOP , the
decompression stop duration and decompression
stop depth begin to flash and an audible alarm
goes off.
Due to the formation of microbubbles, decompression can increase massively if a decompression stop is ignored. When the surface is reached during
the decompression alarm, the arrow DECOSTOP , the decompression stop
duration and decompression depth continue flashing, in order to point to
the risk of a decompression accident. The SOS mode is activated 3 minutes
after the dive if corrective action is not taken (-> 10).
WARNING pression stop is ignored. The arrow
%
C
DEPTH
On entering the decompression phase, the arrow NO STOP
disappears, the
arrow DECOSTOP appears and an attention beep goes off. Right beside the
arrow, the deepest decompression stage in metres (feet) is displayed. Next to the
decompression stop depth, the decompression stop duration of the displayed
stage appears in minutes. The display <3m 7:> means that a decompression
stop of 7 minutes at a depth of 3m has to be made. When a decompression
stop has been finished, the next higher decompression stop is displayed. When
all decompression stops have been made, the arrow DECOSTOP extinguishes
and the arrow NO STOP reappears. The indication of time on the lower right
shows the no-stop time again.
Ignored decompression
alarm
If the total (cumulative) duration of the decompression alarm is longer than
one minute, it is entered in the logbook.
Descend to the prescribed decompression stop depth immediately!
Total time of ascent
%
C
DEPTH
DIVE TIME
CNS O2%
%
DECO STOP
m
MAX.DEPTH
As soon as decompression stops are necessary Smart shows the total time of
ascent. This includes the ascent time from the current depth to the surface and
all decompression stop obligations.
DECO INFO
The total time of ascent is calculated on the basis of the prescribed
ascent rate and a normal workload. Total time of ascent can be
subject to change if the ascent rate is not ideal (100%) or if Smart
COM detects a higher workload.
Total time of ascent
WARNING
UWATEC® Smart dive computers
On all dives with Smart, make a safety stop for at
least three minutes at a depth of 5 m (15 feet).
19
English
III
4 Functions during the dive
Decompression values
5 Functions at the surface
5.1 End of a dive
%
C
DEPTH
DIVE TIME
After reaching the surface (<0.8 m/3 ft) Smart remains in dive mode for 5 minutes. The delay allows for surfacing for a short period for orientation.
After 5 minutes the dive is closed and it is entered into the logbook.
DECO INFO
MAX.DEPTH
WARNING
5.2 Desaturation time
%
C
DEPTH
DIVE TIME
NO
h
CNS O2%
%
DESAT
h
DECO INFO
MAX.DEPTH
For the calculations of the desaturation and no-fly time it is assumed that the
diver breathes air while on the surface.
DESAT , desaturation time in hours and
After the dive has been closed
minutes and, if available, oxygen toxicity is displayed. Desaturation time is
determined either by oxygen toxicity, nitrogen saturation or the regression of
microbubbles, depending on which requires the longer time. Oxygen toxicity
(<CNS O2>) is displayed and adjusted until the value becomes 0%.
Desaturation time is indicated until the next dive or until it reaches zero.
The display is switched off to save energy three minutes after the last manipulation is made. The calculations are nevertheless continued in the background.
Oxygen toxicity
Desaturation time
5.3 No-fly time
No-fly time
Do not fly icon
The <no-fly time> is indicated beside the icon <do not fly>. <No-fly time> is
the time in hours that should pass before a flight and is displayed and adjusted
until the value becomes 0 hours.
%
C
DEPTH
DIVE TIME
NO
h
CNS O2%
%
WARNING
DESAT
Flying while Smart displays <do not fly> may lead
to serious injury or death from decompression sickness.
h
DECO INFO
MAX.DEPTH
5.4 Microbubble warning
%
Through repetitive dives microbubbles accumulate in the lungs if the surface
interval is not long enough. Ignoring decompression stops or ascending at
an excessive ascent rate can also lead to microbubbles in tissues. In order
%
to reduce the risk of decompression sickness for repetitive dives, the surface
interval should be planned long enough. If Smart calculates that the formah
tion of microbubbles occurs during the surface interval, it will advise a diver to
extend the surface interval via the microbubble warning. The duration of the
Microbubble
microbubble warning is visible by entering the dive planner -> 29.
warning
C
DEPTH
DIVE TIME
NO
NO
CNS O2%
DESAT
MAX.DEPTH
DECO INFO
Desaturation time
WARNING
If the <microbubble warning (NO DIVE)> is visible
during the surface interval, the diver should not
undertake another dive.
If the dive is made in spite of the microbubble warning, the diver must cope
with a clearly shorter no-stop time or an extension of decompression. Also,
the duration of the microbubble warning at the end of the dive can increase
considerably.
20
UWATEC® Smart dive computers
6 Diving in mountain lakes
%
C
DEPTH
DIVE TIME
DESAT
h
DECO INFO
MAX.DEPTH
III
Smart measures the atmospheric pressure every 60 seconds even while the
display is switched off. If the computer detects a sufficient increase in altitude,
it switches on automatically and indicates the new altitude range (1-4) and
the desaturation time. Desaturation time indicated at this moment refers to
adaptation time at this altitude. If the dive starts within this adaptation time,
Smart treats it as a repetitive dive, since the body is offgassing.
Altitude is divided into five ranges, which are influenced by barometric pressure. That is why the defined altitude ranges overlap on their fringes. If a
mountain lake is reached, the altitude range is indicated at the surface, in
the logbook and in the dive planner by a stylised mountain filled with one or
more of 4 segments representing the 4 ranges (1-4). Sea level to an altitude of
approximately 1000m (3300 feet) is not indicated.
switching
at approx.
In the following diagram,
No deco data
610 mbar
you can see the approxiGauge mode
4000 m
8.85 psi
mate breakdown
13120 ft
of the altitude
3000 m
725 mbar
ranges:
9840 ft
Altitude range 1
Desaturation time
Adaptation time
Altitude ranges
10.51 psi
1
2
3
4
2000 m
6560 ft
815 mbar
11.82 psi
1000 m
3280 ft
905 mbar
13.12 psi
0m
6.2 Prohibited altitude
WARNING
Ascent to altitude range 3
and 4 prohibited.
Max. allowed altitude:
2650 m (8694 ft).
Max. altitude:
Smart shows via flashing altitude segments while at
the surface to which altitude the diver may not rise.
850 m
1650 m
2650 m
4000 m
2790 ft
5413 ft
8694 ft
13120 ft
The ascent prohibition can also be displayed together with an
altitude range
Example: you are at 1200 m (3937 ft) (altitude
range 1) and you may ascend to range 2 only (2650
m / 8694 feet). You may not rise to the altitude
range 3 or 4.
6.3 Decompression dives in mountain lakes
In order to assure optimal decompression even at higher altitudes, the 3m (10
%
ft) decompression stage is divided into a 4 m (13 ft) stage and a 2 m (7 ft) stage
in altitude ranges 1, 2 and 3. The prescribed decompression stop depths are,
in sequence, 2m / 4m / 6m / 9m… (7 ft / 13 ft / 20 ft / 30 ft…).
C
DEPTH
DIVE TIME
If atmospheric pressure is below 620 mbar (8.99 psi) (altitude higher than
4100 m / 13450 ft above sea level), no decompression data is calculated and
displayed (automatic gauge mode).
In addition RBT (COM) and the dive planner are not available anymore. The
oxygen toxicity and the tank pressure (COM) are still indicated.
DECO INFO
MAX.DEPTH
Altitude range 4:
• no deco data
• COM no RBT
TANK DATA
bar
UWATEC®
COM
Smart dive computers
21
English
6.1 Altitude ranges
IV Diving with microbubble levels (MB)
The following chapter deals with the characteristics of diving with microbubble levels (MB levels).
For general information about displays and features of diving with Smart see chapter III.
Microbubbles are tiny bubbles that can build up inside a diver's body during any dive and normally dissipate naturally during an ascent and on the surface after a dive. Dives within no-stop time and observance of
decompression stops do not prevent the formation of microbubbles in the venous blood circulation.
Dangerous microbubbles are those migrating into the arterial circulation. The reasons for the migration
from the venous blood circulation to the arterial circulation can be a great many microbubbles collecting in the
lungs. UWATEC has equipped Smart dive computers with a new technology to protect from microbubbles.
The diver chooses – according to his/her needs – an MB level and influences through it the level of
protection from microbubbles. Diving with MB levels requires additional ascent stops (level stops), the ascent
is slowed down and the body gets more time to desaturate. This works contrary to the formation of the
microbubbles and increases the safety.
Smart features 6 microbubble levels (L0-L5). Level L0 corresponds to UWATEC's well-known
decompression model ZH-L8 ADT and does not require level stops due to microbubble formation. Levels L1 to
L5 offer additional protection from microbubble formation with level L5 offering the highest protection.
Similar to the display of information during decompression dives or dives within no-stop time, Smart displays depth and duration of the first level stop as well as the total time of ascent as soon as the MB no-stop
time has run out. As the MB no-stop time is shorter than the ordinary no-stop time a diver will be required
to carry out a stop (level stop) sooner than a diver using level L0.
If a diver ignores a required level stop, Smart will change over to a lower MB level and the dive can not be
completed with the initially chosen MB level. For example, if a diver sets level L4 on Smart prior to the dive
and during the dive ignores the stops recommended Smart will automatically adjust the setting to level L3 or
lower.
1 Comparison of dives with MB level L0 and MB level L5
When two Smarts are used simultaneously, one unit is set for example to MB level L5, the other to L0,
the no-stop time will be shortened and level stops will be required before the diver has the obligation of
a decompression stop. These additional level stops help dissipate the microbubbles.
Depth
Microbubble accumulation
at the end of dive
Time
L0
3m/10ft
6m/20ft
L5
9m/30ft
12m/40ft
Stop depth
15m/50ft
Microbubble
level
ft
L0
DECO STOP
NO STOP
L5
NO STOP
LEVELSTOP
m
ft
22
m
NO STOP
NO STOP
LEVELSTOP
m
ft
DECO
LEVELSTOP
m
ft
Decompression values
Level stop values
Decompression obligation, -> 25
UWATEC® Smart dive computers
2 Terminology
IV
This chapter will exclusively deal with terminology and display features used while diving with MB levels.
All other features are described in chapter III (->11).
Level stop phase
MB no-stop phase
Dive phase during which surfacing is possible
without MB level stop.
An MB level
between
L1 and L5
was chosen.
Depth
%
C
DEPTH
DIVE TIME
CNS O2%
English
2.1 Display during microbubble (MB) no-stop phase
Time
%
Dive time
21min
MB no-stop time
NO STOP
DECO INFO
MAX.DEPTH
MB no-stop time
Remaining time at a
respective depth allowing
ascent without level stop.
Current depth
Maximum depth
29.9 m
2.2 Display during level stop phase
Total ascent time
including level stops
Total ascent time (14 min)
Depth
Time
%
C
DEPTH
DIVE TIME
6m/20ft
CNS O2%
9m/30ft
%
LEVELSTOP
MAX.DEPTH
3m/10ft
Lowest level
stop depth
3 min
Level stop duration
m
DECO INFO
Level stop depth
The deepest level stop
depth is displayed.
Level stop duration
The duration of a level
stop at a given level
stop depth is displayed.
35.7m
UWATEC® Smart dive computers
MB no-stop phase
Levelstop phase
To complete the dive without being
reduced to a lower MB level all
requested level stops must be
observed.
23
3 Preparation for a dive with microbubble levels (MB levels)
3.1 Setting the MB level
To change the MB level Smart must be in user mode.
…
DEPTH
1. Bridge contacts B and + or B and – until until the symbol for MB levels
appears.
DIVE TIME
2. Confirm that you wish to change the displayed MB level by bridging B and E.
+ –
3. Change MB level by bridging contacts B and + or B and – .
DECO INFO
MAX.DEPTH
DEPTH
DIVE TIME
4. Confirm with B and E the selected MB level.
Without confirmation the display will disappear after 3 minutes and your
entries will not be accepted.
DECO INFO
MAX.DEPTH
Smart will display the
symbol to confirm that an MB level beyond L0 (L1L5) has been chosen. If however a level stop is ignored, the new MB level is
permanently shown (-> 25).
MB levels have an influence on the dive planner.
4 Functions during the dive with microbubble levels
4.1 Level stop information
Microbubble (MB) no-stop time
While diving with MB levels L1 to L5 Smart will display the MB no-stop time instead of the ordinary no-stop
time. Within the MB no-stop time no level stops are required.
are visible. The remaining MB no-stop time is shown
The arrow NO STOP and the MB level symbol
in minutes.
• Information and alarms for MB no-stop time and ordinary no%
stop time are the same (->18).
• Regardless of the MB level, we generally recommend to perform
a slow ascent during the last few metres / feet.
C
DEPTH
DIVE TIME
NO STOP
DECO INFO
MAX.DEPTH
MB no-stop time
Level stop
Level stop icon
%
C
DEPTH
DIVE TIME
CNS O2%
%
LEVELSTOP
MAX.DEPTH
m
DECO INFO
Deepest level
stop depth
Level stop duration
On entering the level stop phase, the arrow NO STOP disappears and the arrow
LEVELSTOP appears. The LEVELSTOP arrow flashes for 8 seconds and an audible attention beep goes off. To complete the dive without being reduced to a lower MB
level, all requested level stops must be observed.
To the right of the LEVELSTOP arrow, the deepest level stop is displayed in metres/
feet. The display <3m 2:> (<10ft 2:>) means that a level stop of 2 minutes at
a depth of 3 metres (10ft) has to be observed.
When a level stop obligation is finished, the next higher level stop – if present
– is displayed. When all level stops have been observed, the arrow LEVELSTOP
extinguishes and the arrow NO STOP reappears. The indication of time on the
lower right shows the MB no-stop time again.
Total time of ascent
24
UWATEC® Smart dive computers
4 sec
%
C
DEPTH
WARNING
DIVE TIME
h
CNS O2%
%
LEVELSTOP
Level stop ignored
Microbubble level reduced
WARNING
4 sec
C
DEPTH
DIVE TIME
CNS O2%
%
LEVELSTOP
The warning "Microbubble level reduced" is
activated if the diver ascends more than 1.5m (5ft)
above the required level stop. Smart then reduces
the MB level, an attention beep* goes off and the
new MB level will flash until the end of the dive. The
level stop for the reduced MB level is now displayed.
To complete the dive without being further reduced
to an even lower MB level the new level stop must
be observed.
m
DECO INFO
MAX.DEPTH
The attention message "Level stop ignored" is
activated if the requested level stop is not observed.
An attention beep* goes off, the arrow LEVELSTOP ,
the depth and duration of the ignored level stop
begin flashing.
To complete the dive without being reduced to a
lower MB level, you must descend to the prescribed
depth immediately!
m
DECO INFO
MAX.DEPTH
IV
New microbubble level
* Attention beeps can be suppressed via SmartTRAK.
4.2 Total time of ascent
%
C
DEPTH
DIVE TIME
Smart displays the level stop information and the total time of ascent. This
includes the time of ascent as well as all level stops.
CNS O2%
The total time of ascent is calculated on the basis of the prescribed
ascent rate and a normal workload. Total time of ascent can be
subject to change if the ascent rate is not ideal (100%) or if Smart
COM detects a higher workload.
%
LEVELSTOP
m
DECO INFO
MAX.DEPTH
Total ascent time
C
DEPTH
%
4.3 Decompression
obligation
Smart calculates and displays level stops to reduce microbubble formation,
Decompression obligation
but it also calculates the diver's decompression data. If decompression stops
CNS O %
become obligatory, the DECO symbol will be displayed. The total ascent time will
%
now also contain a decompression stop.
DIVE TIME
2
DECO
LEVELSTOP
m
DECO INFO
MAX.DEPTH
Level stop information
4 sec
%
C
DEPTH
DIVE TIME
CNS O2%
%
DECO
LEVELSTOP
MAX.DEPTH
m
DECO INFO
UWATEC® Smart dive computers
WARNING
You are close to entering decompression:
At the beginning of a decompression phase an
attention beep goes off and the DECO symbol
flashes for 8 seconds.
In order to prevent a dive with long decompression
stops it is recommended that you ascend a few
metres/feet on seeing this message.
25
English
4 Functions during the dive with microbubble levels
4 Functions during the dive with microbubble levels
4.4 Level stop and deco stop
Time
Depth
Microbubble
level
L5
L0
3m/10ft
Deco stop
duration
Level stop duration
Since level stops are more restrictive
than decompression stops, when all
decompression obligations have been
observed the display changes from
DECOSTOP LEVELSTOP to LEVELSTOP only.
L0
L5
LEVELSTOP
LEVELSTOP
ft
Decompression
stop depth =
level stop depth
When the level stop depth equals the
depth of the first obligatory decompression stop and if you are within
1.5m/5feet of the stop depth itself,
Smart shows DECOSTOP and LEVELSTOP .
The indicated duration refers to level
stop duration.
ft
Level stop duration
5 Complete a dive with MB levels
A dive with MB levels is completed the same way as a dive without MB levels
(L0) (-> 20), save for the following exceptions:
H
DIVE TIME
If the MB level has been reduced during the dive, Smart will display a flashing
MB level symbol and the current MB level for five minutes after reaching the
surface. The dive is then completed and Smart changes to user mode with the
MB level switching back to the original MB setting.
Repetitive dives and microbubble levels: if during a dive a level stop is being
ignored and the diver starts another descent shortly afterwards, Smart might
immediately request level stops. To complete the dive with the initially set MB
level all level stops must be observed.
DECO INFO
H
26
UWATEC® Smart dive computers
V
V Gauge mode
Gauge mode is provided for those who prefer to utilize their own tables (technical diving) or for those who
go freediving in addition to scuba diving.
When in gauge mode, the Smart will only display time and depth information, however nitrogen tissue
loading and oxygen exposure will be calculated just as they would be during a regular SCUBA dive. It is
consequently very important that even when using the Smart in gauge mode, the correct value of your
oxygen percentage is set -> 14.
Because the dive computer has residual nitrogen information after having been utilized in gauge mode, it
is ready for use as a regular computer at any time after switching it back to computer mode.
Setting an incorrect mixture carries an inherent risk of decompression sickness
and/or oxygen toxicity! An incorrect gas mixture can be lethal!
Even before a dive in gauge mode, make sure that the set gas mixture corresponds to the gas mixture currently used.
WARNING
• If you are diving trimix or any mix other than oxygen/nitrogen with an oxygen
percentage of 21% or higher, input the correct percentage value for the oxygen. The computer will track oxygen exposure correctly and exaggerate the
nitrogen loading.
• If you are diving trimix or any mix with a percentage of oxygen lower than
21%, set the computer to 21% oxygen. The computer will exaggerate both
the oxygen exposure and the nitrogen loading.
WARNING
Enabling the gauge mode (Switching back to the regular dive computer mode)
To use the Smart in gauge mode, you must first enable the computer via SmartTRAK and the infrared interface.
Choose "Dive Computer Settings" under the "Options" pop-up window in
SmartTRAK. Once the "Dive Computer Settings" dialog box opens, the PC will
"write"
first "read" the existing settings in the dive computer. Click on "ON" ("OFF" to
switch back to the regular dive computer mode) under "Gauge Mode", then
click on the right icon in the top row to "write" the changes to the dive computer. The dive computer will now show "OnG" on the display.
DEPTH
DIVE TIME
Diving in gauge mode
DECO INFO
MAX.DEPTH
In gauge mode oxygen toxicity is not displayed, but it is calculated in the background based on the set oxygen mixture. When the calculated value reaches
75% and 100%, an attention beep and an alarm go off, respectively.
WARNING
The following information is displayed in gauge mode:
Temperature
Icon for microbubble
level L1-L5
Maximum depth
Maximum depth
reached during
the dive.
%
C
DEPTH
Current depth
In metres (feet)
O2% Mix
Selected oxygen fraction
DIVE TIME
Dive time
Duration of
the dive (min)
%
SPEED
MAX.DEPTH
DECO INFO
TANK DATA
bar
Tank pressure
COM
Ascent rate
(Only while ascending)
UWATEC® Smart dive computers
27
English
Dives in gauge mode are performed at your own risk!
WARNING
Gauge mode
After diving in gauge mode
After a dive in gauge mode the display shows the following information based on the preset O2 mixture:
Microbubble warning (do not dive)* ->20
%
C
DEPTH
DIVE TIME
NO
NO
h
CNS O2%
%
No fly time ->20
Do not fly icon ->20
DESAT
Prohibited altitude ->21
h
MAX.DEPTH
Oxygen toxicity ->20
DECO INFO
Desaturation time ->20
* The duration of the microbubble warning is visible by entering the dive planner -> 29.
Diving after violating the dive computer
If the computer has been violated by not respecting a mandatory decompression stop, for instance, the
computer will lock out for 24 hours. Gauge mode will not be available during the entire lock-out time.
28
UWATEC® Smart dive computers
VI Dive planner
Basis of the planning:
If two or more divers using computers are planning a dive, planning for all
divers has to be based on the dive computer showing the shortest no-stop
times. Failure to do this may lead to serious injury or death from decompression sickness.
WARNING
1 Planning a no-stop dive
With the contacts B and – or B and – you can select the dive planner at the surface.
NO
DEPTH
DIVE TIME
NO
h
DECO INFO
MAX.DEPTH
MAX.DEPTH
DECO INFO
Microbubble warning
(Do not dive)
Duration of the
warning
The microbubble warning
and its duration are displayed if Smart detects an
increased risk due to the
accumulation of microbubbles.
Enter the dive planner with B and E.
DEPTH
DIVE TIME
h
MAX.DEPTH
Input of the
surface interval
Icon for microbubble
level L1-L5
%
DEPTH
DIVE TIME
Depth
DECO INFO
+
–
NO
If a microbubble warning (no dive) and its
duration has been displayed, Smart proposes
this time – rounded up to the next 15 minutes –
as surface interval. If the proposed interval is
shortened, the microbubble warning appears.
With B and E you confirm the displayed interval (if applicable), then Smart
starts scrolling the no-stop times. The no-stop times are displayed in 3 metre
increments (10 ft) and are displayed for every increment for about 3 seconds.
The process starts at 3 metre (10 feet).
If a microbubble level has been selected (L1 to 5), Smart shows the microbubble no-stop time instead of the no-stop time.
NO STOP
MAX.DEPTH
The input window for the time interval is displayed
if there was a remaining desaturation (DESAT)
before the dive planner has been selected. This
surface interval between now and the beginning of
the dive can be changed with the contacts B and +
or B and – in steps of 15 minutes.
DECO INFO
No-stop time or
MB no-stop time
Depths deeper than the MOD for the selected gas (O2 mix) are not displayed.
NO
UWATEC® Smart dive computers
On page 20 you will find further information and safety considerations
regarding the microbubble warning.
29
English
VI
Smart is equipped with a dive planner which allows the planning of no-stop
dives with freely determinable surface intervals.
• selected fraction of oxygen (O2% Mix)
• selected microbubble level
• water temperature of the most recent dive
• altitude range (if any)
• status of saturation at the time the dive planner is selected
• assuming a normal workload of the diver and observance of the prescribed
ascent rates.
VI Dive planner
2 Leaving the dive planner
With the contacts B and E (1-2 sec.) you can exit the dive planner. This also
occurs after three minutes without operation.
30
UWATEC® Smart dive computers
CNS value at the end of the dive
MB level reduced*
Logbook icon
Lowest temperature
%
C
DEPTH
DIVE TIME
Diving in SOS mode
S
L
O
W
Altitude range (if any)
DECO
Maximum depth
% LOG
h
DECO INFO
MAX.DEPTH
O2 Mix
Dive time
CNS O2%
Ignored decompression stop *
Too fast ascent*
Increased workload warning*
Dive number
Duration of surface
interval (only
with repetitive dives)
TANK DATA
bar
RBT
RBT
warning*
COM
Gas consumed during
this dive
dP = differential
Pressure (bar or psi)
*Alarms during the dive
If a dive is started within adaptation time (after a change of altitude), the
adaptation time is displayed instead of the surface interval.
2 Operation
With the contacts B and + or B and – you can select the logbook. With B and
E you enter the logbook.
DEPTH
DIVE TIME
if rep. dive
MAX.DEPTH
DECO INFO
If there was a remaining desaturation time (DESAT)
before selecting the logbook, the time since the last
dive (surface interval) is displayed.
h
MAX.DEPTH
DECO INFO
With B and E you get the most recent dive displayed (LOG 1).
C
DEPTH
%
DIVE TIME
LOG
MAX.DEPTH
DECO INFO
UWATEC® Smart dive computers
Each bridging of B and + or B and – causes a jump to the next older or more
recent dive. Upon continuous bridging of the contacts all dives are displayed
successively.
With the contacts B and E you can exit the logbook.
The logbook closes automatically after 3 minutes without operation.
31
English
VII
VII Logbook
1 Survey
A dive is entered in the logbook if the dive time is longer than 2 minutes. Smart PRO records dive profiles
of about 100 hours of diving and Smart COM records the profiles of about 50 hours. This information can
be transferred to a PC with the standard infrared interface (IrDA) and the Windows® software SmartTRAK.
Up to 99 dives can be displayed directly on the dive computer.
The following information of the dive is displayed:
VIII Appendix
1 Technical information
Operating altitude:
with decompression information: sea level up to approx. 4000 m (13120ft);
w/o decompression, w/o RBT information: usable in gauge mode (at any altitude)
Max. displayed depth:
120m (395 ft), resolution between 0.8 m and 99.9 m: 0.1 m, >99.9 m: 1m
The resolution in feet is always 1 foot
WARNING
• Do not dive deeper than the limits given by the chosen fraction of oxygen
(nitrogen narcosis, oxygen toxicity).
• Never dive deeper than your training qualification (experience) allows you.
• Always observe local dive depth restrictions.
Decompression calculation depth range:
0.8 to 120m (3 to 395 ft)
Maximum environment pressure:
13 bar (189 psi)
High pressure connection:
COM Maximum working pressure: 300 bar (4350 psi)
Clock:
Quartz timer, display up to 199 minutes
O2% Mix:
Adjustable between 21%O2 (compressed air) and 100% O2
Operating temperature: -10° to +50°C (14°F to 122°F)
Power supply:
Special battery UWATEC LR07
Life of the battery:
500 to 1000 dives, depending on the quantity of dives per year and the use of
the backlight.
2 Maintenance
COM The tank pressure gauge and the parts of Smart COM used to measure the tank pressure should be
serviced by an authorized SCUBAPRO UWATEC dealer every second year or after 200 dives (whichever
comes first). Aside from that your Smart is virtually maintenance free. All you need to do is to rinse it
carefully with fresh water after each use and to have the batteries changed when needed. To avoid possible problems with your Smart, the following recommendations will help assure that it will give you years
of trouble free service:
WARNING
WARNING
32
•
•
•
•
Avoid dropping or jarring your Smart.
Do not allow your Smart to be exposed to direct, intense sunlight.
Rinse your Smart thoroughly with fresh water after each dive.
Do not store your Smart in a sealed container; make sure there is free
ventilation.
• If there are problems with operating the contacts, use soapy water to clean
Smart and dry it thoroughly. The surface of your Smart housing can be treated
with silicone grease. Do not apply grease to the water contacts!
• Do not clean Smart with liquids containing solvent (apart from water).
Take the dive computer to an authorised SCUBAPRO UWATEC dealer in
order to change the batteries. The battery replacement is carried out by a
SCUBAPRO UWATEC subsidiary. Smart is checked for its technical integrity at
the same time. Do not attempt to have the batteries changed by anyone other
than an authorised SCUBAPRO UWATEC dealer.
UWATEC® Smart dive computers
VIII
VIII Appendix
3 COM Conversion of tank pressure
The figure allows you to compare the information given by a conventional pressure gauge and by Smart
COM at six different temperatures.
bar psi
260 3770
Display pressure gauge
240 3480
220 3190
200 2900
35o C 95o F
30o C 86o F
20o C
10o C
5o C
0o C
68o F
50o F
41o F
32o F
180 2610
160 2320
140 2030
120 1740
150 160 170 180 190 200 210 220 230 bar
2175 2320 2465 2610 2755 2900 3045 3190 3335 psi
Display Smart COM
UWATEC® Smart dive computers
33
English
Tank pressure indicated in the lower display may differ from the information given by a manometer/ pressure gauge. Smart COM displays pressure always converted to a temperature of 20°C / 68°F, whereas the
mechanical pressure gauge displays the current pressure influenced by temperature.
VIII Appendix
4 Warranty
The warranty only covers dive computers which have been bought from an
authorised SCUBAPRO UWATEC retailer.
The warranty is given for a period of two years.
Repairs or replacements during the warranty period do not increase the warranty period.
In order to put forward a warranty claim: send the dive computer together
with a dated receipt of the purchase to your authorised retailer or an authorised servicing point.
UWATEC reserves the right to determine the merits of a warranty claim and to
determine whether the computer will be repaired or replaced.
Excluded are faults or defects due to:
• excessive wear and tear;
• exterior influences, e.g. transport damage, damage due to bumping and
hitting, influences of weather or other natural phenomena;
• servicing, repairs or the opening of the dive computer by anybody not
authorised by the manufacturer. This especially concerns the change of
battery;
• pressure tests which do not take place in water;
• diving accidents.
34
UWATEC® Smart dive computers
Active backlight __________________________ 10
Ascent rate _______________________ 11, 13, 15
Attention messages _______________________ 13
Battery alarm ____________________________ 13
Battery capacity, Checking the… ____________ 9
Battery lifetime ___________________________ 32
Beep, Switch off the… ____________________ 13
Bubbles, Warning of… _________________ 20, 29
CNS O2 __________________ 2, 3, 11, 12, 13, 31
Deco data during decompression phase ______ 11
Deco data during no-stop phase ____________ 11
Decompression stop, Ignored… _________ 13, 19
Depth, current ___________________________ 15
Desaturation time ________________________ 20
Dive computer operating _________________ 3, 8
Dive ____________________________________ 11
Dive, end of a dive _______________________ 20
Dive planner _____________________________ 29
Dive time _______________________________ 15
Fly, "no-fly time" _______________________ 9, 20
Gas mixture, Setting… ___________________ 14
Gauge mode ____________________________ 27
Interval time _____________________________ 29
Light ___________________________________ 10
Logbook ________________________________ 31
Maintenance ____________________________ 32
UWATEC® Smart dive computers
VIII
Maximum depth ______________________ 15, 31
Microbubbles _________________________ 22-26
Mounting the HP hose to the first stage _____ 10
Mountain lakes, Diving in… ____________ 21, 31
Nitrox
______________________________ 12
No-stop time _________________________ 18, 22
O2 fraction _______________________ 11, 12, 14
O2% mix, Set up… ______________________ 14
O2 partial pressure _________________ 12, 13, 16
O2 partial pressure, maximum ___________ 12,16
O2 toxicity _______________________ 12, 16, 17
Oxygen…, see "O2…"
PC, transfer to PC (logbook) _______________ 31
ppO2, see O2 partial pressure
Premix, setting the gas mixture ____________ 14
RBT _____________________________ 11, 13, 18
SmartTRAK ________________________ 8, 12, 31
SOS mode_______________________________ 10
Surface interval _______________________ 29, 31
System___________________________________ 8
Tank pressure (COM) _______________________ 17
Technical information _____________________ 32
Warnings _______________________________ 13
Workload (COM) __________________________ 17
Workload, Increased… (COM) _______________ 17
35
English
VIII Appendix
5 Index
SCUBAPRO UWATEC Americas
(USA/Canada/Latin America)
1166 Fesler Street
El Cajon, CA 92020 USA
t: +1 619 402 1023
f: +1 619 402 1554
www.scubapro.com
SCUBAPRO UWATEC France
Les Terriers Nord
175 Allée Belle Vue
F-06600 Antibes
t: +33 (0) 4 92 91 30 30
f: +33 (0) 4 92 91 30 31
www.scubapro-uwatec.fr
SCUBAPRO UWATEC Asia Pacific
1208 Block A, MP Industrial Center
18 Ka Yip St.
Chai Wan Hong Kong
t: +852 2556 7338
f: +852 2898 9872
www.scubaproasiapacific.com
SCUBAPRO UWATEC Benelux
Avenue des Arts, 10/11 Bte 13
1210 Bruxelles
t: +32 (0) 2 250 37 10
f: +32 (0) 2 250 37 11
www.scubapro-uwatec.com
SCUBAPRO UWATEC Australia
Unit 21, 380 Eastern Valley Way
Chatswood, N.S.W. 2067
t: +61 2 9417 1011
f: +61 2 9417 1044
www.scubapro.com.au
SCUBAPRO UWATEC Deutschland
(Germany / Austria / Scandinavia)
Taucherausrüstungen GmbH
Rheinvogtstraße 17
79713 Bad Säckingen-Wallbach
t: +49 (0) 7761 921050
f: +49 (0) 7761 921051
www.scubapro-uwatec.de
SCUBAPRO UWATEC Italy
Via G.Latiro 45
I-16039 Sestri Levante (GE)
t: +39 0185 482 321
f: +39 0185 459 122
www.scubapro-uwatec.it
SCUBAPRO UWATEC España
Pere IV, nº359, 2º
08020- Barcelona
t: +34 93 303 55 50
f: +34 93 266 45 05
www.scubapro-uwatec.es
SCUBAPRO UWATEC U.K.
Vickers Business Centre
Priestley Road
Basingstoke, Hampshire RG24 9NP
England
t: +44 0 1256 812 636
f: +44 0 1256 812 646
www.scubapro.co.uk
SCUBAPRO UWATEC Switzerland
Oberwilerstrasse 16
CH-8444 Henggart
t: +41 (0) 52 3 16 27 21
f: +41 (0) 52 3 16 28 67
www.scubapro-uwatec.de
SCUBAPRO UWATEC Japan
4-2 Marina Plaza 5F
Kanazawa-Ku
Yokohama
Japan
t: +81 45 775 2288
f: +81 45 775 4420
www.scubapro.co.jp
www.uwatec.com
5.2005
UWATEC® Smart dive computers
Smart TEC
®
SWISS MADE BY UWATEC AG
English
Operating Manual
Safety considerations
You must carefully read and understand this entire manual before using your Smart TEC.
WARNING
Diving has many inherent risks. Even if you follow the instructions of this
manual in a careful manner, it is still possible that you may be seriously injured
or die from decompression sickness, oxygen toxicity or some other inherent
risk of scuba with Nitrox or compressed air. Unless you are fully aware of these
risks and are willing to personally accept and assume responsibility for those
risks, do not use Smart TEC!
Guidelines for the use of Smart TEC:
The following guidelines for using Smart TEC are derived from the latest medical research and the
recommendations of the American Academy of Underwater Sciences for diving with diving computers.
Following these guidelines will greatly increase your safety while diving, but cannot guarantee that
decompression sickness or oxygen toxicity will not occur.
• Smart TEC is designed for dives with Nitrox (to a max.100% O2) and compressed air (21%O2) only. Do
not use Smart TEC for dives made with other mixed gases.
• It is absolutely necessary to check the set mixture before each dive and to compare it to the gas mixture currently used. Always remember: setting an incorrect mixture carries an inherent risk of decompression sickness and/or oxygen toxicity! Maximum deviation from the measured mixture must not
exceed 1% O2. An incorrect gas mixture can be lethal!
• Only use Smart TEC with open circuit breathing systems. The gas mixture must be determined for each
pressure tank you use.
• Only use Smart TEC for diving with an independent breathing apparatus. Smart TEC is not designed
for long term exposures with Nitrox.
• Always observe the visual and audible alarm signals of Smart TEC. Avoid situations of increased risk
which are marked with a warning sign in this operating manual.
• If the ascent arrow appears, start to ascend.
• If the flashing ascent arrow appears, start to ascend immediately.
• Smart TEC has a ppO2 warning, the default limits of which are set at 1.4 bar ppO2max. This limit can
be adjusted via SmartTRAK. An alteration of the ppO2max to higher than 1.6 bar is dangerous and we
do not recommend this.
• Frequently check the "oxygen clock" (CNS O2 Limit), especially in the range higher than 1.4 bar ppO2.
Ascend and finish the dive if the CNS O2 exceeds 75%.
• Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas mixture in use.
• Always check the diving limits considering the oxygen content and standard sports diving procedures
(decompression sickness, oxygen toxicity).
• In accordance with the recommended maximum diving limit of all instructional agencies, do not dive
deeper than 40 metres/130 feet.
• The danger of nitrogen narcosis has to be taken into consideration. Smart TEC gives no warning about
this.
• On all dives with Smart TEC, make a safety stop for at least 3 minutes at 5 metres (15 feet).
• All divers using dive computers to plan dives and indicate or determine decompression status must use
their own computer, which they take with them on all dives.
• If Smart TEC fails at any time during the dive, the dive must be terminated, and appropriate surfacing
procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 ft) should be initiated immediately.
• Comply with the ascent rate and carry out any decompression stop required. If the computer should
fail for any reason, you must ascend at a rate of 10m (30 feet) per minute or less.
• On any given dive, both divers in a buddy pair must follow the most conservative dive computer for
that particular dive.
• Never dive without a buddy. Smart TEC does not substitute for a dive buddy.
• Only make dives that are appropriate to your level of dive training. Smart TEC does not increase your
knowledge of diving.
2
I UWATEC® Smart dive computers
Safety considerations
• Always dive with back-up instruments. Make sure that you always use back-up instrumentation including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, and have access
to decompression tables whenever diving with a dive computer.
• Avoid repeated ascents and descents (yo yo diving).
• Avoid repeated heavy workload while at depth.
• Plan the dives to be shorter if they are made in cold water.
• After finishing the decompression or at the end of a no-stop dive, the final stage of the ascent should
be as slow as possible.
• You MUST be familiar with all signs and symptoms of decompression sickness before using Smart TEC!
Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms occur
after a dive! There is a direct correlation between the effectiveness of treatment and the delay between the onset of symptoms and the treatment for decompression sickness.
• Only dive with Nitrox after you have been thoroughly instructed by a recognised institution.
•
•
•
•
•
•
Repetitive dives
Do not start your next dive before your CNS O2 % status has dropped below 40%.
Diving with Nitrox: Make sure your surface interval is long enough (just like diving with compressed
air). Plan for a minimum surface interval of two hours. Oxygen, too, needs sufficient time to leave
the body.
Match gas mixture to the intended dive.
Do not attempt a repetitive dive if the microbubble warning
is visible on the display.
Plan a day without diving once a week.
If you have to change computers, wait at least 48 hours before carrying out your next dive.
NO
Altitude and diving
• Do not dive at altitudes higher than 4000m (13000 feet).
• After a dive do not rise to altitudes that Smart TEC prohibits via the flashing altitude
segments. (->25)
Flying after diving
• After diving, wait at least 24 hours prior to flying.
Smart TEC dive instrument is a personal protective equipment in compliance with the essential safety
requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa,
notified body no. 0474, have certified the conformity with the European Standard EN 250:2000 and EN
13319:2000.
EN250:2000 Respiratory equipment - Open circuit self contained compressed air diving apparatus Requirements, testing, marking (pressure gauge test).
EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices Functional and safety requirements, test methods. Any information on decompression obligation displayed by equipment covered by this standard is explicitly excluded from its scope.
I UWATEC® Smart dive computers
3
English
I
Introduction
Congratulations on purchasing Smart TEC and welcome to UWATEC. From now on you will enjoy the assistance of the most extraordinary dive computer - equipped with UWATEC's most innovative technology while diving.
Smart TEC enables you to use up to three different gas mixtures during the same dive. However,
for an easy reading this manual mainly refers to dives with a single gas mixture. Information for diving with
several gas mixtures is marked with ( ) or has been summarised in special chapters.
We thank you for choosing Smart TEC and we hope you will enjoy safe dives in the future!
Further information on UWATEC Smart dive computers and other products by UWATEC can be found on
our web page at www.uwatec.com.
To make this manual easier to read we will use the term 'TEC' as an abbreviation for 'UWATEC Smart TEC
diving computer' throughout this booklet.
Safety considerations
Dive computers provide divers with data; they, however, do not provide the knowledge how this data
should be understood and applied. Dive computers cannot replace common sense! You must therefore
carefully read and understand this entire manual before using your TEC.
Important remarks concerning signal words and symbols
This operating manual makes use of the following icons to indicate especially important comments:
Remarks
Information and tips which are important for optimal use of the functions of
Smart TEC.
Danger!
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
The following symbols are used in the operating manual:
Flashing display
Valid only for dives
with more than one
gas mixture
->
Page reference
e.g. ->10
Audible signals
4 sec.
Audible attention
signal
Audible alarm signal
Instructions for manual input
–+E
Bridge contacts
Example: bridging contacts B and E
B
Push buttons
Press or press and hold (->9)
e.g. press the upper left button
September 2004, Copyright© by UWATEC Switzerland
4
I UWATEC® Smart dive computers
Quick reference
I
O2 mix icon (input)
Gauge icon
Logbook icon
Dive planner icon
English
Microbubble level icon (input / MB level reduced)
Do not fly Icon
Do not dive icon
Microbubble warning
Dive time / No-fly time / SOS duration
Current depth
NO
Service icon
CNS O2%
Ascent obligation
Altitude sections
Too fast ascent
Icon for stopwatch and safety stop
Logbook indicator
Total ascent time / Dive number
Ascent time icon
Desaturation time indicator
No-stop time / Decompression duration / MB no-stop time
Level stop duration / Duration of Microbubble Warning
Desaturation duration / Duration of surface interval
NO
DECO STOP
LEVELSTOP
NO STOP
Maximum depth
Temperature
Microbubble level
Maximum Operating
Depth (MOD)
%
Increased workload warning
Remaining bottom time RBT / Number of active tanks
Transmitter warning
O2 mix
Tank icons
Decompression stop obligation
Ignored decompression stop
Tank pressure warning
At the surface: several gas mixture have been set
Tank pressure / Gas consumed
Partial pressure of oxygen ppO2
Decompression depth / Level stop depth
Level stop indicator
No-stop indicator
Decompression stop indicator
Oxygen toxicity CNSO2
Ascent rate
Battery capacity
Operating scheme
Select (press) and confirm (press and hold) gas mixtures
Activate the timer for safety stops (dive mode only, in
depths < 6.5 m / 20 ft) (press)
Operate the stopwatch (gauge mode only) (press)
Set a bookmark (press)
Toggle between maximum depth > temperature >
MB level > …(press)
Intermediate time and reset (in gauge mode only and
while stopwatch is active) (press)
Switching on the backlight (press and hold)
Start / Confirmation / Enter
+ / Navigate
– / Navigate
Display
switched off
Switching on
Dive planner
Logbook
37
10
O2 mix
39
18
Microbubble level 28
Gauge mode
26
Navigation
(
+ Surface
– interval
%
)
%
Battery capacity
%
10
+
–
Percentage
of oxygen
+
–
NO STOP
%
%
+
–
+
–
+
–
Gauge mode
on and off
Dive number
Bottom time
Exit (2 sec.)
Microbubble
level
Exit
+
–
Maximum
operating
depth (MOD)
Confirmation
Confirmation
Confirmation
Display switches off automatically after 3 minutes without operation.
I UWATEC® Smart dive computers
5
List of chapters
I
Safety considerations
Introduction
Important remarks concerning signal words
and symbols
Quick reference / Operating scheme
List of chapters
___________________________________2
___________________________________4
II
1
System and operation
System description
___________________________________8
___________________________________8
2
Operation
2.1 Operating elements
2.2 SmartTRAK
2.3 Switching on the display
2.4 Checking the battery capacity
2.5 Selection and activation of user functions
2.6 Active backlight
2.7 Switching off the display
___________________________________8
___________________________________8
___________________________________9
__________________________________10
__________________________________10
__________________________________10
__________________________________11
__________________________________11
3
SOS mode
__________________________________11
4
Setting up Smart TEC
4.1 Mounting of transmitter
4.2 Pairing of transmitter and dive computer
__________________________________12
__________________________________12
__________________________________13
___________________________________4
___________________________________5
___________________________________6
III Diving with Smart TEC
__________________________________15
1 Terminology / Symbols
__________________________________15
1.1 General terminology / Display during no-stop phase __________________________________15
1.2 Display during decompression phase /
Remaining Bottom Time
__________________________________15
__________________________________16
1.3 Nitrox information (O2 information)
2
Attention messages and alarms
2.1 Attention messages
2.2 Alarms
3
Preparation for the dive
__________________________________18
3.1 Setting the gas mixture and MOD
__________________________________18
3.2 Setting the MB level
__________________________________18
3.3 Preparation for diving with more than one gas mixture ________________________________18
3.4 Preparation for the dive and function check
__________________________________18
4
Functions during the dive
__________________________________19
4.1 Immersion
__________________________________19
4.2 Setting bookmarks
__________________________________19
4.3 Dive time
__________________________________19
4.4 Current depth
__________________________________19
4.5 Maximum depth / Temperature
__________________________________19
4.6 Ascent rate
__________________________________19
4.7 Partial pressure of oxygen (ppO2) / Maximum Operating Depth (MOD) ___________________20
4.8 Oxygen toxicity (CNS O2%)
__________________________________21
4.9 Tank pressure
__________________________________21
4.10 Remaining Bottom Time (RBT)
__________________________________22
4.11 Decompression information
__________________________________22
4.12 Safety stop timer
__________________________________23
5
Functions at the surface
5.1 End of a dive
5.2 Desaturation time
5.3 No-fly time
5.4 Microbubble warning
6
__________________________________17
__________________________________17
__________________________________17
__________________________________24
__________________________________24
__________________________________24
__________________________________24
__________________________________24
I UWATEC® Smart dive computers
6
Diving in mountain lakes
6.1 Altitude ranges
6.2 Prohibited altitude
6.3 Decompression dives in mountain lakes
I
__________________________________25
__________________________________25
__________________________________25
__________________________________25
IV Gauge mode
__________________________________26
V
1
2
Diving with microbubble levels (MB)
Comparison of dives with MB level L0 and MB level L5
Terminology
2.1 Display during microbubble (MB) no-stop phase
2.2 Display during level stop phase
__________________________________28
__________________________________28
__________________________________29
__________________________________29
__________________________________29
3
Preparation for a dive with microbubble levels (MB levels) __________________________________30
3.1 Setting the MB level
__________________________________30
4
Functions during the dive with microbubble levels
4.1 Level stop information
4.2 Total time of ascent
4.3 Decompression obligation
4.4 Level stop and deco stop
__________________________________30
__________________________________30
__________________________________31
__________________________________31
__________________________________32
5
Complete a dive with MB levels
__________________________________32
VI
VII
1
2
3
Diving with more than one gas mixture
Dive planner
Planning a no-stop dive
Planning a decompression dive
Leaving the dive planner
__________________________________32
__________________________________37
__________________________________37
__________________________________38
__________________________________38
VIII Logbook
1 Survey
2 Operation
__________________________________39
__________________________________39
__________________________________39
IX Appendix
1 Technical information
2 Maintenance
2.1 Replacing the battery of the transmitter
3 Conversion of tank pressure
4 Warranty
5 FCC
6 Index
__________________________________40
__________________________________40
__________________________________40
__________________________________40
__________________________________42
__________________________________42
__________________________________43
__________________________________43
I UWATEC® Smart dive computers
7
English
List of chapters
II System and operation
1 System description
TEC displays all important dive and decompression data and comes with a unique multichannel receiver,
which can receive tank pressure data from up to 3 transmitters. Each transmitter is mounted at the high
pressure (HP) outlet of the regulator, where it measures the tank pressure and radio transmits the information to TEC. UWATEC's specially patented transmission process prevents interference and ensures continuous and reliable reception
TEC has a data memory which stores the dive data. The data can be transmitted with an infrared interface (IrDA) and the SmartTRAK software to a Windows® personal computer.
The SmartTRAK CD software is included with the TEC Package. Infrared interfaces are available in PC stores. A list of recommended interfaces is available on the UWATEC homepage (www.uwatec.com).
Smart TEC
Infrared port
SmartTRAK
Infrared Interface
(option)
Pressure transmitter
2 Operation
On page 5 you will find an operating schematic.
2.1 Operating elements
Contacts
-
+
E
TEC has 4 operating contacts B, E, +, – on the outside of the housing. For
manual operation, touch base contact B and any one of the other three contacts above the display with moistened fingers («bridging» contacts).
Contact B: Base contact, which has to be touched for all operations.
Contact E: Enter contact. It serves to switch on TEC and to confirm or enter the
displayed value. It is therefore comparable to the ENTER or RETURN key of a
keyboard.
NO
CNS O2%
NO
DECO STOP
LEVELSTOP
NO STOP
%
+ / – Contacts: These allow to navigate between menus and, once inside a
menu, to increase or decrease the indicated value.
B
8
II UWATEC® Smart dive computers
II System and operation
To use the push buttons TEC must be switched on. Operation of the push
buttons is divided into «press» and «press and hold (1 second)».
The push buttons
,
and
activate the following functions:
Select the gas mixture (press)
Confirm the gas mixture (press and hold)
Activate the timer for safety stops (dive mode only, in depths < 6.5 m /
20 ft) (press)
Operate the stopwatch (gauge mode only) (press)
Set a bookmark (press)
Toggle between maximum depth > temperature > MB level > …
(press)
Intermediate time and reset (in gauge mode only and while stopwatch is active) (press)
Switching on the backlight (press and hold)
2.2 SmartTRAK
With SmartTRAK you can transfer dive data to a personal computer and graphically display the data.
The following settings may be changed with SmartTRAK:
•
•
•
•
•
•
•
•
•
•
•
•
Unit system
Audible attention signal suppression
Gauge mode
Depth alarm
Backlight illumination duration
Maximum partial pressure of oxygen (ppO2 max)
Time limit to reset the O2 % mix to air
Minimum reserve pressure at the end
of the dive (basis for RBT calculation)
Tank pressure alarm
Replace audible RBT alarm by audible attention signal
Workload sensitivity
Safety stop duration
metric/imperial
selective
5 - 100 m (20 - 330 feet)
2-12 sec.
1-1.95 bar
no reset / 1 - 48 hrs.
20 – 120 bar (300 - 1750 psi)
50 - 200 bar (750 - 2900 psi)
25 steps
1-5 min.
The following data may be recalled with SmartTRAK:
•
•
•
•
•
•
•
•
•
•
Number of past dives
Total duration of past dives
Atmospheric pressure
Pairing information from up to 3 transmitters
Dive profile
Logbook
Temperature curve
Workload curve
Alarms and attention messages
Bookmarks
II UWATEC® Smart dive computers
9
English
Push buttons
II
2 Operation
2.3 Switching on the display
• automatically, on submerging in water or when adaptation to atmospheric
pressure is necessary;
• manually, by bridging contacts on housing (B-E).
• When TEC is in state of rest no information is displayed but
the atmospheric pressure is continuously monitored. If a
higher altitude range is detected, TEC switches on for 3 minutes automatically. -> 25
NO
CNS O2%
NO
DECO STOP
LEVELSTOP
NO STOP
• TEC switches on by bridging the contacts B and E. All
segments light up for 5 seconds.
%
Temperature
Afterwards the display shows the selected O2 mix, the
temperature and in certain circumstances an altitude range
->25.
%
O2 Mix
Do not fly icon
NO
CNS O2%
If the appertaining transmitter is switched on and located
within transmitting distance, the tank pressure is displayed,
otherwise <---> will be displayed. If no transmitter has been
paired yet, the display will be blank.
No-fly time
Oxygen toxicity
Desaturation time
If there is a remaining saturation due to the last dive or
change of altitude, TEC also displays the remaining desaturation time, the oxygen toxicity and the "no-fly time" ->24.
%
2.4 Checking the battery capacity
After switching on TEC you can check the battery capacity by bridging the
contacts B and E. The remaining capacity is displayed for 3 seconds as a percentage. If the value reaches 0%, the battery warning gets activated (->17) and
the battery has to be replaced by an authorised SCUBAPRO UWATEC dealer.
For a 7-day diving vacation TEC uses between 2 – 5 % of its battery capacity.
Battery capacity
2.5 Selection and activation of user functions
At the surface you can select the dive planner, the logbook
and gauge mode as well as the functions to enter the O2%
mix and the microbubble levels by bridging the contacts +
and B or – and B.
Gauge mode ->26
Input microbubble level ->30
Input O2 mix ->18
Logbook ->39
Dive planner ->37
After the selection of the desired function you can activate and deactivate it by
bridging the contacts B and E.
Details to the user functions are to be found on the pages mentioned above.
10
II UWATEC® Smart dive computers
2.6 Active backlight
The display of TEC can be illuminated both on the surface and
underwater.
The backlight can be activated by pushing and holding button
for 1 second. The light will turn off automatically after 8
seconds or after the time selected via SmartTRAK.
The backlight can only be activated if the computer display is on.
WARNING
The active backlight is no substitute
for a dive torch. When diving at
night or at increased depth we
recommend the use of a dive torch.
2.7 Switching off the display
On the surface TEC switches off automatically after 3 minutes without
operation.
3 SOS mode
Time remaining until
SOS mode switches
off automatically
NO
CNS O2%
NO
%
Activation: automatic
If the diver remains above a depth of 0.8m (3 feet) for more than three minutes without observing a prescribed decompression, the computer will automatically switch into SOS mode after the dive.
The display shows the "SOS" sign and the remaining length of the SOS mode.
The dive will be entered in the logbook with "SOS". Other than that the SOS
mode has no further impact on the displays and functions on the surface.
• Serious injury or death may result if a diver does
not seek immediate treatment should any signs
or symptoms of decompression sickness occur
after a dive.
• Do not dive to treat symptoms of decompression sickness!
• Diving in SOS mode is extremely dangerous and you must assume full
responsibility for such behaviour. UWATEC will assume no liability.
WARNING
Once in the SOS mode, the computer will lock up and will be inoperable as a
diving instrument for 24 hours.
A diving accident can be analyzed at any time in the logbook and downloaded
to a PC by means of the infrared interface (IrDA) and the SmartTRAK software.
II UWATEC® Smart dive computers
11
I
English
II
2 Operation / 3 SOS mode
4 Setting up Smart TEC (transmitter and dive computer)
4.1 Mounting of transmitter
Each individual pressure tank requires a separate transmitter.
The transmitter is mounted at the high pressure (HP) outlet of the regulator’s first stage before the first
dive.
WARNING
• Use air and Nitrox components in accordance with the law of the country.
Procedure:
HP
(Adaptor)
Do not hold the transmitter
by its plastic part.
Mount the transmitter at the HP
oulet. If the threads do not match,
you can get a fitting adaptor at your
diving equipment retailer.
Tighten the transmitter by
means of a size 3/4" wrench.
The transmitter is best mounted laterally on the regulator.
If pressure tanks 2 and D are carried at the side, make sure the position of their transmitters in relation to TEC resembles that of the transmitter of the main tank on the back.
It is advisable to mount the transmitter on the same side that the computer is located. This is the optimal
position for transmission.
12
Position of the transmitter
for left handers.
Position of the transmitter
for right handers.
Position of the transmitter for left
handers, if there is no connection
possible on the left hand side.
Position of the transmitter for right
handers, if there is no connection
possible on the right hand side.
II UWATEC® Smart dive computers
4.2 Pairing of transmitter and dive computer
To receive the data of the transmitters, each transmitter must be assigned to one tank symbol and paired
with TEC.
Pairing is necessary:
• before the first use of TEC with the transmitter;
• if you use a new transmitter or a new computer;
• after changing the battery;
• if a different tank symbol (1, 2, or D) is to be paired to the transmitter;
e.g. The transmitter is to be paired to tank symbol D instead of tank symbol 2.
To distinguish your tanks and transmitters you should regard the following assignments:
Bottom Mix
Transmitter 1
Lowest
oxygen %
Travel Mix
Transmitter 2
Intermediate
oxygen %
Deco Mix
Transmitter 3
Highest
oxygen %
Note that you can also set 2 or even 3 tanks to the same gas mixture. This comes
in handy when diving with twin tanks or with double outlet on a single tank.
Pairing procedure:
1. Shut the valve, depressurise the regulator and wait for 15 seconds.
2. Switch on TEC (bridge contacts B and E). Select the tank symbol you wish to
pair with a certain transmitter by pressing
. Selected tank symbol will
flash. Confirm the selection by pressing
for at least 1 second. Tank
symbol stops flashing.
Tank symbol 2 can only be selected after tank symbol D has been assigned to a certain gas mixture.
3. Move the dive computer and transmitter into the
shown position.
Transmitter and dive computer must be in physical
contact during the entire pairing procedure.
4. Open the tank valve. The transmitter briefly sends a pairing sequence to the
computer.
5. The dive computer shows a flashing <PAIr> shortly after the valve has been
opened.
%
6. In order to confirm the pairing, the B and E contacts have to be bridged within 5 sec. A beep confirms the input and the <PAIr> display remains still.
%
10 sec.
7. "PAIr" disappears after approx. 10 sec.
%
%
II UWATEC® Smart dive computers
In case of faulty pairing, the display <FAIL> appears instead of <PAIr>. In that
case, completely purge the regulator and repeat the pairing procedure. This is
only possible after at least 15 seconds.
13
English
II I
4 Setting up (transmitter and dive computer)
4 Setting up Smart TEC
• Pairing of transmitter and dive computer may already be carried out at home
and need only be executed once, before the first use.
•
A transmitter can only be paired with a single tank symbol at a time. If
you try to pair the same transmitter with a second tank symbol, the first
pairing will automatically be deleted.
•
The pairing of transmitter and tank symbol will remain valid, even if the
gas mixture is switched off (-> 34, switching off of gas mixtures).
• You may delete the pairing of transmitter and dive computer by means of
the SmartTRAK software.
How to check if transmitter and computer are paired correctly:
1. Switch on the computer manually (B and E)
2. To check the pairing of a certain tank symbol, press
to select the tank
symbol. Confirm your choice by pressing
for 1 second.
3. Move the computer into transmitting range of the transmitter.
4. Open the tank valve. The transmitter switches on automatically.
5. Check the display: Pairing has been carried out correctly if the pressure is
displayed within 5-10 seconds.
%
Pairing ok
%
Check the assignment of all tanks and transmitters as well as the pairing of
transmitters and dive computer!
If the transmitter of a selected pressure tank has been correctly paired, but TEC
cannot receive the tank pressure, "- - -" will appear on the display. In that case,
check the position of transmitter and dive computer.
Pairing present, no pressure
data available
%
If the specific channel of transmission (i.e. tank) has not been paired, or if an
existing pairing has been deleted via SmartTRAK, the display will remain empty.
In that case, transmitter and computer must be paired again.
Pairing not present
14
II UWATEC® Smart dive computer
III Diving with Smart TEC
III
The information on the display of TEC varies depending on the kind of dive and the dive phase.
For information about diving with microbubble levels (MB levels) see chapter V
->28. Specific features of "Diving with more than one gas mixture", are described in chapter VI -> 32.
1.1 General terminology / Display during no-stop phase
Oxygen toxicity
CNS O2%
Ascent rate
(Only while
ascending)
Dive time
Duration of
the dive (min)
No-stop phase
Decompression phase
Dive phase during which surfacing is allowed
without stop.
Dive phase during which
surfacing is allowed only
after decompression
stops are completed.
%
SPEED
Depth
Time
Current depth
In metres (feet)
No-stop time
Remaining time
at a given depth
during which ascent
is allowed without
decompression
stop (min).
CNS O2%
NO STOP
%
Tank
pressure
24min
Current depth
26.2 m Maximum depth
RBT, Remaining
bottom time
37 min. Dive time
O2% Mix
Selected oxygen fraction
tank 1
No-stop time
Elapsed bottom time
Maximum depth
Temperature
Maximum depth reached during the dive
MB Level…
1.2 Display during decompression phase / Remaining Bottom Time (RBT)
Decompression stop
All required decompression
stops must be observed.
Total ascent time to surface (7 min)
Depth
Time
3m
6m
Decompressionstop duration 2 min
Deepest
decompression
stop depth
CNS O2%
DECO STOP
%
RBT 21 min
Decompression
stop depth
Deepest stage is
displayed.
Decompression
stop duration
Prescribed duration of the
decompression stop at the
displayed decompression
stage (minutes).
35.7 m
No-stop range
Total ascent time
Including decompression
stops in minutes.
III UWATEC® Smart dive computers
Decompression range
Remaining bottom time, RBT
Maximum remaining time at current
depth including all decompression
obligations (minutes).
15
English
1 Terminology / Symbols
1 Terminology / Symbols
1.3 Nitrox information (O2 information)
For dives with compressed air in normal recreational diving, nitrogen is the decisive gas for the decompression calculations. When diving with Nitrox, the risk of oxygen toxicity rises with the increase of the fraction of oxygen and the increase of depth and can limit dive time and the maximum depth. TEC includes
this in the calculations and displays the necessary information:
<O2% MIX>
Fraction of oxygen: The fraction of oxygen in the Nitrox mixture can be set between 21% (normal compressed air) and 100% in 1% increments. Your
selected mix will be the basis for all calculations.
ppO2 max.
Maximum allowed partial pressure of oxygen: the higher the fraction of oxygen
in the mixture, the shallower the dive depth at which this value of the
partial pressure of oxygen is reached. The depth at which ppO2 max. is reached
is called Maximum Operating Depth (MOD). Default setting is 1.4 bar, but it can
be set by means of SmartTRAK between 1.0 and 1.95 bar. When you enter the
settings for the gas mixture, TEC will display the ppO2 max. limit setting and the
corresponding MOD. TEC warns the diver audibly and visually once the depth
is reached at which the ppO2 reaches the maximum allowed value.
• The partial pressure limit set by means of SmartTRAK can be reduced manually
at TEC (->18, setting the gas mixture).
• The CNS O2% value/alarm is not influenced by the selected ppO2max. setting.
<CNS O2>
WARNING
16
Oxygen toxicity: With the increased
percentage of oxygen, the oxygen in
the tissues (especially in the central
nervous system (CNS)) becomes important. If the partial pressure of oxygen rises above 0.5 bar, the CNS O2
value increases, if the partial pressure of oxygen is below 0.5 bar, the
CNS O2 value decreases. The closer
the CNS O2 value is to 100%, the
closer the limit where symptoms can
occur. See page 21.
ppO2
0,21 bar
CNS O2%
decreases
0,5 bar
CNS O2%
increases
Nitrox diving may only be attempted by experienced divers after proper training
from an internationally recognized agency.
III UWATEC® Smart dive computers
2 Attention messages and alarms
III
The audible attention messages (but not the alarms) can be selectively
switched off with SmartTRAK.
2.2 Alarms
WARNING
Serious injury or death may result from failing to
immediately respond to alarms given by TEC.
2.1 Attention messages
Attention messages are communicated to the
diver visually by symbols, letters or flashing figures. In addition, two short audible sequences can
be heard (in an interval of 4 seconds) in two different frequencies under water.
4 sec
Alarms are given to the diver visually by flashing
symbols, letters or figures. In addition, an audible
sequence in one frequency can be heard during
the whole duration of the alarm.
(can not be switched off)
(can be switched off)
Attention messages come up in the following
situations (more information can be found on the
listed pages):
Page
• Maximum Operating Depth / max ppO2
is reached
20
• Set maximum depth is reached
19
• Oxygen toxicity reaches 75%
21
• No-stop time = 2 minutes
22
• Prohibited altitude* (surface mode)
25
• Entering decompression when diving with L0 23
• Remaining Bottom Time < 3 minutes
22
• Tank pressure has reached set warning level 21
• Increased workload
21
•
Depth for tank switch has been reached 35
Diving with microbubble levels (L1-L5):
• MB no-stop time = 0
• MB level stop ignored
• MB level reduced
• Entering decompression when diving
with MB level L1-L5
30
31
31
31
An alarm occurs in the following situations
(more information can be found on the listed
pages):
Page
• Oxygen toxicity reaches 100%
• Ignored decompression
• Remaining Bottom Time = 0
( can be switched to attention beep)
• Exceeding the prescribed ascent rate
(Particular scale of beeps, ->20)
• Low battery alarm*
21
23
22
20
see below
Low battery alarm TEC*
The service symbol appears if the battery capacity
reaches 0%.
Take the unit to your
authorised SCUBAPRO
UWATEC retailer.
Transmitter battery low: *
<bAt> flashing and alternating with the display of
the tank pressure.
Replace the battery in
the transmitter. ->40
%
NO STOP
NO STOP
*without audible alarm
*without audible alarm
III UWATEC® Smart dive computers
17
English
TEC draws the diver’s attention to certain situations and warns the diver of unsafe diving practices. Attention messages and alarms are always visual and audible under water, only visual at the surface except the
decompression alarm.
3 Preparation for the dive
3.1 Setting the gas mixture and MOD
WARNING
Before every dive and after changing the tank, make sure that the settings for the
gas mixtures correspond with the current mixtures used. An incorrect setting causes TEC to miscalculate this particular dive. If the fraction of oxygen is set too
low this can lead to oxygen poisoning without warning. If the value is set too
high decompression sickness may occur. Inaccuracies in the calculations are carried
over to repetitive dives.
For dives with a single gas mixture, assign the gas mixture to tank symbol 1 and shut off gas mixtures
2 and D. ->34
If more than one gas mixture has been selected, TEC will display at the surface and the number of
gas mixtures.
For dives with several gas mixtures please read pages 32 and 13 for further reference.
To set the gas mixture, TEC must be in user mode.
1. Press
to choose the tank for the O2 mixture you are going to enter. The
tank symbol will start flashing. Press and hold
to confirm your selection.
…
2. Bridge contacts B and + or B and – until the symbol for the setting of the
O2 mixture appears.
…
3. Confirm that you wish to change the displayed oxygen fraction by bridging
B and E.
4. Change the oxygen fraction in increments of 1% by bridging B and + or B
and –. TEC will display the current fraction of oxygen, the maximum partial
+ –
pressure limit, ppO2 max (as pre-set by means of SmartTRAK) and the MOD.
5. Confirm the selected percentage with B and E.
%
6. By bridging B and + or B and – you can change the
MOD for the chosen fraction of oxygen. TEC will now
display the corresponding partial pressure limit (ppO2
+ –
O2% mix
max) for the new MOD.
PpO2max.
7.
Confirm your MOD settings with B and E.
Max. Operating
%
ppO2max.
Depth MOD
• Without confirmation the display will disappear after 3 minutes and your entries will not be
accepted.
•
Please refer to page 32 for the setting of gas mixtures for tanks 2 and D.
• The time to reset the O2 % mix to air can be set with SmartTRAK between 1 and 48 hours
or to "no reset" (default).
3.2
3.3
Setting the MB level See chapter V, ->28
Preparation for diving with more than one gas mixture See chapter VI, ->32
3.4 Preparation for the dive and function check
The following descriptions of the preparation are based on the assumption that all transmitters have been
correctly mounted at the HP outlet of the regulators (->12) and successfully paired with TEC (->13).
1. Mount the regulator together with the transmitter on the tank
WARNING
NO
CNS O2%
DECO STOP
LEVELSTOP
NO STOP
%
18
NO
2. If present, check the reserve valve of your tank, the reserve valve must be
open.
3. Switch on TEC (B-E) and check the test display: Are all elements of the display activated? Do not use TEC if the display does not show all elements.
4. Open the valve (transmitter will switch on automatically) and check the tank
pressure (after approx. 10 seconds). If the pressure is insufficient, change the
tank.
5. Check the connections and instruments for leaks. Never dive with leaky
equipment!
Repeat 4 and 5 with all transmitters you are going to use.
III UWATEC® Smart dive computers
4 Functions during the dive
4.1 Immersion
After immersion, starting at a depth of about 0.8 m (3 ft), TEC automatically selects gas mixture 1, all
diving functions are monitored, i.e. depth and dive time displayed, maximum depth stored, saturation of
tissues calculated, no-stop time or decompression prognosis determined, ascent rate controlled and displayed and the correctness of the decompression procedure supervised. In addition, TEC also shows the
tank pressure and about 2 minutes into the dive the Remaining Bottom Time (RBT) is displayed.
4.2 Setting bookmarks
During the dive you can create bookmarks in your dive profile by pressing
. An audible signal confirms the creation of the bookmark. These bookmarks will be graphically displayed in the dive profile of
SmartTRAK.
To visualize the bookmarks on the dive profile, you must select the box “Generate bookmarks” under “Program options” in SmartTRAK.
4.3 Dive time
Dive time
The whole time spent below a depth of 0.8m (3 feet) is displayed as dive time
in minutes. The time above 0.8m (3 feet) is counted as dive time only if the
diver descends again below 0.8m (3 feet) within 5 minutes.
While the dive time is running, the colons on the right of the figures are
flashing in one second intervals. Maximum dive time displayed is 999 minutes.
If a dive lasts longer than 999 minutes the dive time display starts
again at 0 minutes.
NO STOP
%
4.4 Current depth
Current depth is given in 10 cm increments (1 foot). On switching
on and at a diving depth of less than 0.8 m (3 ft) the display shows
<– – –>.
Depth measurement is based on freshwater. Therefore,
TEC shows a slightly greater depth when diving in salt
water, depending on the salinity of the water. No calculation however is affected.
NO STOP
%
%
Current depth
4.5 Maximum depth / Temperature
Maximum depth is only displayed if it exceeds the current depth by more than
1 m (3 feet) (maximum indicator function). If maximum depth is not displayed,
TEC shows the temperature.
CNS O2%
4 sec
NO STOP
%
Maximum depth
WARNING
CNS O2%
NO STOP
%
Ascent arrow
Set maximum depth reached
If the maximum depth set with SmartTRAK has
been reached (default 40m/130 feet), the display
will flash and the ascent arrow will be displayed.
Ascend until the ascent arrow disappears.
4.6 Ascent rate
NO STOP
%
Ascent rate
III UWATEC® Smart dive computers
Optimal ascent rate varies depending on depth between 7 and 20 m/min (23
and 67 ft/min). It is displayed as a percent of the reference variable ascent rate.
If the ascent rate is greater than 100% of the set value, the black arrow
<SLOW> appears. If the ascent rate exceeds 140%, the arrow starts flashing.
TEC provides an audible alarm if the ascent rate is 110% or greater. The intensity of the alarm increases in direct proportion to the degree that the prescribed ascent rate is exceeded.
19
English
III
4 Functions during the dive
WARNING
The prescribed ascent rate must be observed at all times! Exceeding the prescribed ascent rate can lead to microbubbles in the arterial circulation which
can lead to serious injury or death due to decompression sickness.
• In case of an improper ascent TEC may require a decompression stop even
within the no-stop phase because of the danger of microbubble formation.
• The decompression duration necessary for the prevention of microbubbles can
increase massively if the ascent rate is exceeded.
• From great depth a slow ascent may cause heightened saturation of tissues
and an extension of both decompression duration and total ascent time.
At shallow depth, a slow ascent may shorten the decompression duration.
• Display of the ascent rate has the priority over <CNS O2>.
WARNING
Ascent rate
%
S
L
O
W
%
S
L
O
W
%
S
L
O
W
SPEED
SPEED
SPEED
%
SPEED
Visual
alarm
Audible alarm
S
L
O
W
Excessive ascent rates for longer periods are entered in the logbook.
4.7 Partial pressure of oxygen (ppO2 max) / Maximum Operating Depth (MOD)
The maximum partial pressure of oxygen ppO2 max (default 1.4 bar) determines
4 sec
the Maximum Operating Depth (MOD). Diving deeper than the MOD will expose the diver to oxygen partial pressures higher than the set maximum level.
The MOD and consequently the ppO2 max can be reduced manually at TEC
(->18, setting the gas mixture, point 6).
In addition the maximum allowed ppO2 can be set by means of SmartTRAK
between 1.0 to 1.95 bar.
%
CNS O2%
NO STOP
WARNING
The MOD is a function of ppO2 max and the mixture used. If during the dive
the MOD is reached or exceeded TEC sends an audible attention message,
the ascent arrow appears and the current depth display starts flashing.
Ascend to a shallower depth in order to diminish the danger of oxygen poisoning.
Change to the gas mixture that is required at this depth by
selecting the appropriate tank symbol.
WARNING
20
• The MOD should not be exceeded. Disregarding the warning can lead to
oxygen poisoning.
• ppO2 max should not be set higher than 1.6 bar.
III UWATEC® Smart dive computers
4 Functions during the dive
III
4.8 Oxygen toxicity (CNS O2%)
TEC calculates oxygen toxicity from depth values, time and the gas mixture and
displays it in the location of the ascent rate. The toxicity is expressed in 1%
increments of a maximum tolerated value (O2 clock). The symbol <CNS O2> is
displayed together with the percentage.
%
Oxygen toxicity
An audible attention signal goes off if oxygen toxiCNS O2%
WARNING
4 sec
CNS O2%
WARNING
CNS O2%
NO STOP
city reaches 75%. The symbol <CNS O2> flashes
and the ascent arrow appears.
Ascend to shallower depth to decrease oxygen
loading.
When oxygen toxicity reaches 100%, an audible
alarm goes off every 4 seconds. <CNS O2>, the
precentage value and the ascent arrow flash. Danger of oxygen toxicity!
Start ascent at once.
• During an ascent and if the CNS O2 % value does not increase anymore (due
to a lower partial pressure of oxygen), the audible warning is suppressed.
• During the ascent, the display of the oxygen toxicity is replaced by the ascent
rate. If the ascent is stopped, the display changes back to the indication of the
CNS value.
• TEC will display CNS O2 % values exceeding 199 % with 199 %.
%
4.9 Tank pressure
The tank pressure is also used for the calculation of
the remaining bottom time (RBT) and the workload.
%
4 sec
4 sec
4 sec
%
Transmitter warning
WARNING
WARNING
WARNING
III UWATEC® Smart dive computers
In case of increased workload, TEC displays a lung
symbol and an audible alarm goes off. (The sensitivity of workload can be changed with SmartTRAK).
In order to prevent additional saturation, reduce
exertion, relax and breathe more slowly.
If TEC receives no data for 30 seconds, an audible
alarm goes off and the transmitter warning
appears.
If TEC does not receive pressure data for another 40 seconds, it will activate another audible alarm. RBT and transmitter warning will no longer be displayed. Instead of the tank pressure value TEC will display "- - -".
Check the position of transmitter and TEC. Start ascending at once.
TEC will switch back to its normal display as soon as new data is received.
WARNING
If tank pressure
<14 bar/200psi
When the tank pressure reaches the set warning
pressure (SmartTRAK) an audible alarm goes off
and the tank symbol is shown. Default value of
warning pressure: 100 bar (1450 psi)
Do not dive any deeper. Start to ascend soon.
If the tank pressure is lower than 14bar/200psi the
transmitter switches off and TEC will display "---".
Do not let the tank pressure drop below
14bar/200psi.
21
English
NO STOP
4 Functions during the dive
4.10 Remaining Bottom Time (RBT)
RBT is the time left at the current depth until the point of time when the ascent
must be started. The RBT is calculated on the basis of the current tank pressure,
breathing rate, the temperature, and the dive data so far recorded. The RBT is
based on the assumption that the tank pressure should amount to the set pressure (default 40 bar/600 psi) at the end of the dive. Alterations can be made with
SmartTRAK. A graphic representation of RBT is on page 15.
During dives with several gas mixtures, the calculation of the RBT is based
on the assumption that the diver will use the current gas mixture to finish the
dive.->34, 35
Never allow the RBT to go below three minutes. If the RBT goes below three
WARNING minutes there is a danger of insufficient supply of gas mixture for the ascent
as well as an increased risk of decompression sickness, and serious injury or
death may result!
Correct calculation of RBT when using a reserve or “J“ type valve is possible only if the reserve function of the valve is in the open (down) position during the dive.
4 sec
WARNING
If the RBT drops below three minutes, an audible
attention signal is activated, the ascent arrow is displayed and the tank icon start flashing.
Start ascent immediately.
WARNING
The RBT value should never reach <0:>. With
RBT=0 the remaining tank reserve may not be sufficient for the ascent.
NO STOP
%
RBT < 3 minutes
When the last minute has passed (RBT=0) an audible alarm is activated every
4 seconds. The RBT, the ascent arrow and the tank icon start flashing. The
audible alarm* on exceeding the RBT is suppressed at depths less than 6.5
m (21 ft) if TEC is in the no-stop phase.
Start ascent at once.
NO STOP
%
*
The audible RBT alarm can be changed to an audible attention signal by
4 sec
means of SmartTRAK.
RBT = 0 minutes
4.11 Decompression information
No-stop time is displayed if no decompression stops are necessary. The arrow NO STOP
decompression stops are necessary. The figures indicate no-stop time in minutes.
NO STOP
is visible if no
• No-stop display <199:> means remaining time of 199 minutes or
more.
• No-stop time is calculated on line and influenced by the current
workload and current water temperature
%
No-stop time
WARNING
4 sec
CNS O2%
If no-stop time drops below 3 minutes, an audible
attention signal is activated and the no-stop value
begins to flash.
If no-stop time is less than 1 minute, the no-stop
display shows the flashing value "0".
In order to prevent a decompression dive, ascend
slowly until the no-stop time is 5 minutes or more.
NO STOP
%
WARNING
22
Dives that require decompression stops are not
recommended.
III UWATEC® Smart dive computers
4 Functions during the dive
CNS O2%
DECO STOP
%
Decompression
stop depth
Decompression
time
CNS O2%
DECO STOP
Ignored decompression
alarm
Total time of ascent
DECO STOP
%
Total time of ascent
On entering the decompression phase, the arrow NO STOP
disappears, the
arrow DECOSTOP appears and an attention beep goes off. Right beside the
arrow, the deepest decompression stage in metres (feet) is displayed. Next to
the decompression stop depth, the decompression stop duration of the displayed stage appears in minutes. The display <3m 7:> means that a decompression stop of 7 minutes at a depth of 3m has to be made.
When a decompression stop has been finished, the next higher decompression
stop is displayed. When all decompression stops have been made, the arrow
DECOSTOP
extinguishes and the arrow NO STOP
reappears. The indication of
time on the lower right shows the no-stop time again.
Deco stop depths deeper than 27m (90 ft) are displayed as <– – : – – >
The decompression alarm is activated if the
WARNING decompression stop is ignored. The arrow
DECOSTOP
, the decompression stop duration and
decompression stop depth begin to flash and an
audible alarm goes off.
Due to the formation of microbubbles, decompression can increase massively if a decompression stop is ignored. When the surface is reached during
the decompression alarm, the arrow DECOSTOP , the decompression stop
duration and decompression stop depth continue flashing, in order to
point to the risk of a decompression accident. The SOS mode is activated 3
minutes after the dive if corrective action is not taken (->11).
If the total (cumulative) duration of the decompression alarm is longer than
one minute, it is entered in the logbook.
Descend to the prescribed decompression stop depth immediately!
As soon as decompression stops are necessary TEC shows the total time of ascent.
This includes the ascent time from the current depth to the surface and all decompression stop obligations.
The total time of ascent is calculated on the basis of the prescribed
ascent rate and a normal workload. Total time of ascent can be
subject to change if the ascent rate is not ideal (100%) or if TEC
detects a higher workload.
Ascent time greater than 199 minutes is displayed as <– –>.
WARNING
On all dives with TEC, make a safety stop for at least
three minutes at a depth of 5 m (15 feet).
4.12 Safety stop timer
The safety stop timer displays the time span a diver should spend at the safety stop depth at the end of
the dive. The timer is activated by the diver and counts back to zero, starting with the time that was
pre-set with SmartTRAK. It can be restarted any number of times. Range: 1 - 5 minutes (default 3 min.)
CNS O2%
The safety stop timer can be activated under the following conditions: Depth
< 6.5 m (21 ft), no-stop display 199 min., gauge mode is switched off.
STOP
Activate the safety stop timer by pressing
. The timer begins to count
backwards and a bookmark will be created in the dive profile.
%
safety stop
icon
The safety stop timer will switch off automatically if the depth exceeds 6.5 m
(21 ft) or the no-stop phase is shorter than 199 minutes.
remaining time span
minutes
seconds
III UWATEC® Smart dive computers
23
English
Decompression values
III
5 Functions at the surface
5.1 End of a dive
After reaching the surface (<0.8 m/3 ft) TEC remains in dive mode for 5 minutes.
The delay allows for surfacing for a short period for orientation.
After 5 minutes the dive is closed and it is entered into the logbook.
%
WARNING
For the calculations of the desaturation and no-fly time it is assumed that the
diver breathes air while on the surface.
5.2 Desaturation time
NO
CNS O2%
%
Oxygen toxicity
DESAT , desaturation time in hours and
After the dive has been closed
minutes and, if available, oxygen toxicity is displayed. Desaturation time is
determined either by oxygen toxicity, nitrogen saturation or the regression of
microbubbles, depending on which requires the longer time. Oxygen toxicity
(<CNS O2>) is displayed and adjusted until the value becomes 0%.
Desaturation time is indicated until the next dive or until it reaches zero.
The display is switched off to save energy three minutes after the last manipulation is made. The calculations are nevertheless continued in the background.
Desaturation time
5.3 No-fly time
No-fly time
Do not fly icon
The <no-fly time> is indicated beside the icon <do not fly>. <No-fly time> is the
time in hours that should pass before a flight and is displayed and adjusted until
the value becomes 0 hours.
NO
CNS O2%
WARNING
Flying while TEC displays <do not fly> may lead to
serious injury or death from decompression sickness.
%
5.4 Microbubble warning
Through repetitive dives microbubbles accumulate in the lungs if the surface
interval is not long enough. Ignoring decompression stops or ascending at an
excessive rate can also lead to microbubbles in tissues. In order to reduce the
risk of decompression sickness for repetitive dives, the surface interval should
be planned long enough. If TEC calculates that the formation of microbubbles
occurs during the surface interval, it will advise a diver to extend the surface
interval via the microbubble warning. The duration of the microbubble warMicrobubble
ning is visible by entering the dive planner -> 37.
warning
NO
CNS O2%
NO
Desaturation time
WARNING
If the <microbubble warning (NO DIVE)> is visible
during the surface interval, the diver should not
undertake another dive.
If the dive is made in spite of the microbubble warning, the diver must cope
with a clearly shorter no-stop time or an extension of decompression. Also, the
duration of the microbubble warning at the end of the dive can increase considerably.
24
III UWATEC® Smart dive computers
6 Diving in mountain lakes
%
Altitude range 1
Desaturation time
Adaptation time
Altitude ranges
TEC measures the atmospheric pressure every 60 seconds even while the display is switched off. If the computer detects a sufficient increase in altitude, it
switches on automatically and indicates the new altitude range (1-4) and the
desaturation time. Desaturation time indicated at this moment refers to
adaptation time at this altitude. If the dive starts within this adaptation time,
TEC treats it as a repetitive dive, since the body is offgassing.
Altitude is divided into five ranges, which are influenced by barometric pressure. That is why the defined altitude ranges overlap on their fringes. If a mountain lake is reached, the altitude range is indicated at the surface, in the logbook and in the dive planner by a stylised mountain filled with one or more of
4 segments representing the 4 ranges. Sea level to an altitude of approximately
1000m (3300 feet) is not
Switching
at approx.
indicated. In the following
No deco data
610 mbar
diagram, you can see the
gauge mode
4000 m
8.85 psi
approximate breakdown of
13120 ft
the altitude ranges:
3000 m
9840 ft
1
2
3
4
725 mbar
10.51 psi
2000 m
6560 ft
815 mbar
11.82 psi
1000 m
3280 ft
905 mbar
13.12 psi
0m
6.2 Prohibited altitude
WARNING
Ascent to altitude range 3
and 4 prohibited.
Max. allowed altitude:
2650 m (8694 ft).
Max. altitude:
850 m
2790 ft
TEC shows via flashing altitude segments while at
the surface to which altitude the diver may not rise.
1650 m
5413 ft
2650 m
8694 ft
4000 m
13120 ft
The ascent prohibition can also be displayed together with an
altitude range:
Example: You are at 1200 m (3937 ft) (altitude
range 1) and you may ascend to range 2 only
(2650 m / 8694 feet). You may not rise to the altitude range 3 or 4.
6.3 Decompression dives in mountain lakes
In order to assure optimal decompression even at higher altitudes, the 3m (10
ft) decompression stage is divided into a 4 m (13 ft) stage and a 2 m (7 ft) stage
in altitude ranges 1, 2 and 3. The prescribed decompression stop depths are, in
sequence, 2m / 4m / 6m / 9m… (7 ft / 13 ft / 20 ft / 30 ft…).
%
Dive at altitude range 4:
• no deco data
• no RBT
III UWATEC® Smart dive computers
If atmospheric pressure is below 620 mbar (8.99 psi) (altitude higher than
4100 m / 13450 ft above sea level), no decompression data is calculated and
displayed (automatic gauge mode). In addition RBT and the dive planner are
not available anymore. The oxygen toxicity and the tank pressure are still indicated.
25
English
6.1 Altitude ranges
III
IV Gauge mode
WARNING
In gauge mode ALL audible and visual alarms and attention messages are
turned off. This includes ascent speed, low tank pressure and interrupted
signal from transmitter.
In gauge mode TEC will display depth, dive time and tank pressure, the maximum depth is stored, ascent
rate and tank pressure are monitored. By pressing
you can switch from maximum depth to temperature and vice versa. You can also activate the stopwatch and check the split time. Gauge mode does not
support the calculation of no-stop time or the supervision of decompression. Supervision of ppO2 max and
CNS O2 % will also be switched off. TEC will display no information about RBT or microbubble development. Bookmarks can be set. The settings for gas mixtures, MOD and microbubble level cannot be set and
the dive planner cannot be selected.
WARNING
• Dives in gauge mode are performed at your own risk!
• After diving in gauge mode you should wait for at least 48 hours before
using a decompression computer.
Switching the gauge mode on and off
Gauge mode can be switched on and off at the surface, if no desaturation time
is being prescribed.
After diving in gauge mode, TEC can not be used as dive computer for 48
hours.
Procedure:
1. Bridge contacts B and + or B and – until the gauge symbol and "on" or
"off" are displayed.
2. Confirm with B and E that you wish to activate or deactivate the gauge
mode. The gauge symbol starts flashing.
3. By bridging contacts B and + or B and – the gauge mode is switched on and
off.
4. Confirm your settings with B and E.
Without confirmation the display will disappear after 3 minutes and your
entries will not be accepted.
Diving in gauge mode
After immersion, starting at a depth of about 0.8m (3 ft), TEC automatically selects gas mixture 1.
The following information is displayed in gauge mode:
Gauge icon
Current depth
Dive time
Maximum depth /
Temperature
Tank pressure
Changing the gas mixtures in gauge mode
In gauge mode it is up to the diver to decide on a time and depth to change
the gas mixture. TEC will not indicate a necessary change of gas mixture. For
more information about changing the gas mixture see page 35.
26
IV UWATEC® Smart dive computers
IV Gauge mode
III
Stopwatch icon
Hours
Timing
Minutes
Seconds
Stopwatch
Example
will start
00h00 00
automatically
after
00h00 15
immersion
00h02 35
Automatically
at the end of 00h00 00
dive
In gauge mode, after immersion, TEC will automatically monitor the dive time
and at the same time activate the stopwatch. If the gauge symbol and "on"
are displayed (-> 26, point 1) the stopwatch can also be activated at the surface by pressing
. The stopwatch will run for a maximum of 1 hour at the
surface and no longer than 24 hours underwater.
By pressing
you can start, stop and restart the stopwatch.
Once the stopwatch has been stopped, you can reset the timer to zero with
.
While the stopwatch is running you can measure split times and return to the
timer display by pressing
. The timekeeping is not interrupted in the
meantime.
Stopwatch activated
Stopwatch is running
Split time
(stopwatch continues to
run in the background)
Stopwatch halted
Time reset
Exit stopwatch
Icon for split time
When split time is
taken, the temperature is
displayed for 5 seconds.
• By pressing
you can select a different pressure tank even while the
stopwatch is running or the split time is being displayed.
• At a diving depth of less than 0.8m (3 ft) the stop watch will automatically
measure and display the split time. If the diver descends again the stopwatch
timer will be displayed again.
After diving in gauge mode
TEC shows the remaining time span during which it cannot be used in computer mode. Once the waiting period is over, the gauge mode can be switched
off manually. ->26
NO
The no-fly time after diving in gauge mode is 48 hours.
Desaturation time will not be displayed.
IV UWATEC® Smart dive computers
27
English
Stopwatch
V Diving with microbubble levels (MB)
The following chapter deals with the characteristics of diving with microbubble levels (MB levels).
For general information about displays and features of diving with TEC see chapter III.
Microbubbles are tiny bubbles that can build up inside a diver's body during any dive and normally dissipate
naturally during an ascent and on the surface after a dive. Dives within no-stop time and observance of decompression stops do not prevent the formation of microbubbles in the venous blood circulation.
Dangerous microbubbles are those migrating into the arterial circulation. The reasons for the migration
from the venous blood circulation to the arterial circulation can be a great many microbubbles collecting in
the lungs. UWATEC has equipped Smart dive computers with a new technology to protect from microbubbles.
The diver chooses – according to his/her needs – an MB level and influences through it the level of protection from microbubbles. Diving with MB levels requires additional ascent stops (level stops), the ascent is slowed down and the body gets more time to desaturate. This works contrary to the formation of the microbubbles and increases the safety.
Smart TEC features 6 microbubble levels (L0-L5). Level L0 corresponds to UWATEC's well-known
decompression model ZH-L8 ADT and does not require level stops due to microbubble formation. Levels L1
to L5 offer additional protection from microbubble formation with level L5 offering the highest protection.
Similar to the display of information during decompression dives or dives within no-stop time, TEC displays
depth and duration of the first level stop as well as the total time of ascent as soon as the MB no-stop time
has run out. As the MB no-stop time is shorter than the ordinary no-stop time a diver will be required to carry
out a stop (level stop) sooner than a diver using level L0.
If a diver ignores a required level stop, TEC will change over to a lower MB level and the dive can not be
completed with the initially chosen MB level. E.g. If a diver sets level L4 on TEC prior to the dive and during the
dive ignores the stops recommended TEC will automatically adjust the setting to level L3 or lower.
1 Comparison of dives with MB level L0 and MB level L5
When two Smart TECs are used simultaneously, one unit is set for example to MB level L5, the other to
L0, the no-stop time will be shortened and level stops will be required before the diver has the obligation
of a decompression stop. These additional level stops help dissipate the microbubbles.
Depth
Microbubble accumulation
at the end of dive
Time
L0
3m/10ft
6m/20ft
L5
9m/30ft
12m/40ft
Stop depth
15m/50ft
Microbubble
level
ft
L0
DECO STOP
NO STOP
NO STOP
NO STOP
L5
NO STOP
LEVELSTOP
m
ft
LEVELSTOP
m
ft
DECO
LEVELSTOP
m
Decompression values
m
Level stop values
ft
Decompression obligation, ->31
28
V UWATEC® Smart dive computers
2 Terminology
V
This chapter will exclusively deal with terminology and display features used while diving with MB levels.
All other features are described in chapter III (page 15).
Level stop phase
MB no-stop phase
Dive phase during which surfacing is
possible without MB level stop.
MB level
activated
Level L2 is active
English
2.1 Display during microbubble (MB) no-stop phase
Depth
Time
CNS O2%
Dive time
21min
MB no-stop time
NO STOP
%
MB no-stop time
Remaining time at a
respective depth allowing
ascent without level stop.
Current depth
Maximum depth
29.9 m
2.2 Display during level stop phase
Total ascent time
including level stops
Total ascent time (14 min)
Depth
Time
CNS O2%
3m/10ft
6m/20ft
9m/30ft
LEVELSTOP
Lowest level
stop depth
3 min
Level stop duration
%
Level stop depth
The deepest level
stop is displayed.
Level stop duration
The duration of a level
stop at a given level
stop depth is displayed.
35.7m
V UWATEC® Smart dive computers
MB no-stop phase
Level stop phase
To complete the dive without being
reduced to a lower MB level all
requested level stops must be
observed.
29
3 Preparation for a dive with microbubble levels (MB levels)
3.1 Setting the MB level
To change the MB level TEC must be in user mode.
1. Bridge contacts B and + or B and – until the symbol for MB levels appears.
2. Confirm that you wish to change the displayed MB level by bridging B and E.
+ –
3. Change MB level by bridging contacts B and + or B and – .
4. Confirm with B and E the selected MB level.
Without confirmation the display will disappear after 3 minutes and your
entries will not be accepted.
TEC will display the
symbol to confirm that an MB level beyond L0 (L1-L5)
has been chosen. During the dive the MB level is shown by pressing briefly
. If however a level stop is ignored, the new MB level is permanently
shown (->31).
MB levels have an influence on the dive planner.
4 Functions during the dive with microbubble levels
4.1 Level stop information
Microbubble (MB) no-stop time
While diving with MB levels L1 to L5 TEC will display the MB no-stop time instead of the ordinary no-stop
time. Within the MB no-stop time no level stops are required.
The arrow NO STOP
and the MB level symbol
are visible. The remaining MB no-stop time is shown
in minutes.
• Information and alarms for MB no-stop time and ordinary nostop time are the same (->22).
• Regardless of the MB level, we generally recommend to perform
a slow ascent during the last few metres / feet.
NO STOP
MB no-stop time
Level stop
Level stop icon
CNS O2%
LEVELSTOP
On entering the level stop phase, the arrow NO STOP
disappears and the
arrow LEVELSTOP appears. The LEVELSTOP arrow flashes for 8 seconds and an
audible attention beep goes off. To complete the dive without being reduced
to a lower MB level, all requested level stops must be observed.
To the right of the LEVELSTOP arrow, the deepest level stop is displayed in metres/feet. The display <3m 2:> (<10ft 2:>) means that a level stop of 2 minutes
at a depth of 3 metres (10ft) has to be observed.
When a level stop obligation is finished, the next higher level stop – if present
– is displayed. When all level stops have been observed, the arrow LEVELSTOP
extinguishes and the arrow NO STOP
reappears. The indication of time shows
the MB no-stop time again.
Deepest level
stop depth
Level stop duration
Total ascent time
30
V UWATEC® Smart dive computers
4 sec
WARNING
CNS O2%
LEVELSTOP
V
The attention message "Level stop ignored" is
activated if the requested level stop is not observed.
An attention beep* goes off, the arrow LEVELSTOP ,
the depth and duration of the ignored level stop
begin flashing.
To complete the dive without being reduced to a
lower MB level, you must descend to the prescribed
depth immediately!
Level stop ignored
WARNING
Microbubble level reduced
4 sec
CNS O2%
LEVELSTOP
%
New microbubble level
The warning "microbubble level reduced" is
activated if the diver ascends more than 1.5m (5ft)
above the required level stop. TEC reduces the
microbubble level, an attention beep* goes off and
for the rest of the dive the new MB level is indicated in the position of the maximum depth. The level
stop for the reduced MB level is now displayed.
To complete the dive without being further reduced
to an even lower MB level the new level stop must
be observed.
* Attention beeps can be suppressed via SmartTRAK.
4.2 Total time of ascent
TEC displays the level stop information and the total time of ascent. This includes the time of ascent as well as all level stops.
CNS O2%
The total time of ascent is calculated on the basis of the prescribed
ascent rate and a normal workload. Total time of ascent can be subject to change if the ascent rate is not ideal (100%) or if TEC detects
a higher workload.
LEVELSTOP
Total ascent time
4.3 Decompression obligation
Decompression obligation
WARNING
CNS O2%
DECO
LEVELSTOP
Level stop information
4 sec
CNS O2%
DECO
LEVELSTOP
%
V UWATEC® Smart dive computers
Avoid decompression dives when diving with MB
levels.
TEC calculates and displays level stops to reduce microbubble formation, but it
also calculates the diver's decompression data. If decompression stops become
obligatory, the DECO symbol will be displayed. The total ascent time will now
also contain a decompression stop.
WARNING
You are close to entering decompression: At the
beginning of a decompression phase an attention
beep goes off and the DECO symbol flashes for 8
seconds.
In order to prevent a dive with long decompression
stops it is recommended that you ascend a few metres/feet on seeing this message.
31
English
4 Functions during the dive with microbubble levels
4 Functions during the dive with microbubble levels
4.4 Level stop and deco stop
When the level stop depth equals the
depth of the first obligatory decompression stop and if you are within
1.5m/5feet of the stop depth itself, TEC
shows DECOSTOP and LEVELSTOP . The
indicated duration refers to level stop
duration.
Depth
Time
L5
L0
3m/10ft
Microbubble
level
Deco stop
duration
Level stop duration
Since level stops are more restrictive
than decompression stops, when all
decompression obligations have been
observed the display changes from
LEVELSTOP
DECOSTOP
to LEVELSTOP only.
L0
L5
LEVELSTOP
LEVELSTOP
ft
ft
decompression stop
depth = level stop depth
Level stop duration
5 Complete a dive with MB levels
A dive with MB levels is completed the same way as a dive without MB levels
(L0) (-> 24), save for the following exceptions:
If the MB level has been reduced during the dive, TEC will display a flashing MB
level symbol and the current MB level for five minutes after reaching the surface. The dive is then completed and TEC changes to user mode with the MB
level switching back to the original MB setting.
Repetitive dives and microbubble levels: If during a dive a level stop is being
ignored and the diver starts another descent shortly afterwards, TEC might
immediately request level stops. To complete the dive with the initially set MB
level all level stops must be observed.
VI
VI
Diving with more than one gas mixture
The following chapter deals with the characteristics of diving with more than one gas mixture.
Smart TEC enables you to use up to three different gas mixtures during the same dive. To measure the tank
pressure, each tank requires an individual transmitter. Tank 1 contains the bottom mix, tank 2 contains the
travel mix and tank D contains the deco mix. For dives with a single gas mixture you must use tank 1, for
dives with 2 gas mixtures you must use tanks 1 and D.
Time
Depth
Depth
Time
Bottom mix
Travel mix
Diving with 3 gas mixtures
32
Deco mix
Bottom mix
Deco mix
Diving with 2 gas mixtures
V/ VI UWATEC® Smart dive computers
VI
Diving with more than one gas mixture
VI
Setting the gas mixture and the depth for changing the gas mixture
During dives with more than one gas mixture the bottom mix
Range of O2 fraction
(tank 1) contains the lowest fraction of oxygen, while the deco
mix (tank D) contains the highest fraction. The additional travel
O2 fraction
mix (tank 2) for dives with 3 gas mixtures holds a fraction of
100%
oxygen that is between that of tank 1 and tank D. TEC will only
accept settings corresponding with this order. Note however
that you can also set 2 or even 3 tanks to the same gas mixture.
TEC will only accept gas mixture switching depths (MOD) as
21%
input where the maximum partial pressure of oxygen (ppO2), as
pre-set manually (-> 18 point 6) or by means of SmartTRAK, is
3 gas mixtures
2 gas mixtures
not exceeded.
D
WARNING
D
For gas mixtures having an oxygen percentage of 80% or greater the ppO2 is
fixed at 1.6bar and cannot be altered in any way.
Procedure:
1.
Enter the setting for the fraction of oxygen and the MOD for tank 1 (bottom mix) according to the instructions on page 18 (points 1-7).
2.
Enter the setting for the fraction of oxygen for tank D (deco mix) according to the instructions on page 18 (points 1-5).
3.
By bridging B and + or B and – enter the desired depth at which you will
change to tank D during the ascent phase. Confirm your settings with B and E.
The depth you have selected is the Maximum Operating Depth
(MOD) for this gas mixture and the indicated ppO2 becomes the
maximum tolerable partial pressure of oxygen (ppO2 max). During
the ascent an audible attention message will indicate that you
have reached the depth which requires the change of your gas
mixture. This applies to tanks D and 2 (see points below).
4.
%
Depth for
change of
gas
mixture,
MOD
ppO2max
+ –
VI UWATEC® Smart dive computers
For dives with three gas mixtures enter the setting for the fraction of
oxygen for tank 2 (travel mix) according to the instructions on page 18
(points 1-5).
Note that tank symbol 2 can only be selected after tank symbol
D has been assigned to a gas mixture.
5.
Now enter the maximum depth for the use of tank 2 by bridging B and
+ or B and -. Confirm your settings with B and E.
The information given under point 3. does apply here also.
Without confirmation with B and E the display will disappear
after 3 minutes and your entries will not be accepted.
The time to reset the O2% mix to air can be set with SmartTRAK between 1 hour
and 48 hours or to "no reset" (default).
After the reset, the oxygen fraction of tank 1 is set to 21%, tanks 2 and D are
switched off (– – %O2).
33
English
Preparation for a dive with several gas mixtures
Before the dive, all transmitters in use must be paired with TEC, the fraction of oxygen must be entered for
each tank and the depth for changing the gas mixture must be set for tanks 2 and D.
VI
Diving with more than one gas mixture
Switching off gas mixtures
Tanks which are not going to be used during the next dive (even though their
fraction of oxygen has been defined) must be "switched off". This is achieved
by switching off the appropriate gas mixture at TEC.
Gas mixtures which have been switched off cannot be selected during the dive
and TEC will ignore their transmitters.
Tank 1 cannot be switched off. If tank D (deco mix) is switched off, tank 2 will
automatically be switched off as well.
%
Mixture 2
"switched off"
Procedure:
1. Select the tank symbol of the gas mixture you wish to switch off and the setting of the O2 mix, according to the instructions on page 18 (points 1-3).
2. Reduce the fraction of oxygen with B and –, until "– – %O2" appears.
3. Confirm your settings with B and E.
The pairing of transmitter and tank symbol will remain valid even if the gas mixture has been shut off.
The selected depth for the change of gas mixture (MOD) is deleted once the
gas mixture is switched off.
Functions during a dive with several gas mixtures
WARNING
Diving with more than one gas mixture represents a much higher risk (than
diving with a single mixture), and mistakes by the diver may lead to serious
injury or death.
During dives with several gas mixtures, always make sure you are breathing
from the tank you intended to breath from.
Mark all your tanks and regulators, so they can under no circumstances be
mixed up! Before every dive and after changing a tank, make sure that each
gas mixture is set to the correct value for the corresponding tank.
Decompression prognosis
The calculation of decompression data (e.g. the total time of ascent) is based on the assumption that
changes of gas mixture will be performed at the previously selected depths (MOD gas mixture 2, MOD gas
mixture D). If a diver ignores a required change or changes the mixture belatedly, TEC will readjust the
decompression calculation accordingly. The dive computer will then base its calculations on the assumption
that the diver will either use the indicated gas mixture until he/she reaches the depth for the next change
or – if no further changes are planned – that he/she will ascend to the surface with the current mixture.
Remaining Bottom Time
In addition to calculating the decompression prognosis for all the activated tanks, in the background TEC
also calculates the decompression prognosis for tank 1 by itself, and (when diving with three tanks) for
tanks 1+2 only and for tanks 1+D only. The Remaining Bottom Time (RBT) while breathing from tank 1
considers that you will finish the dive with tank 1, using the decompression prognosis for tank 1 alone.
The RBT while breathing from tank 2 considers that you will finish the dive with tank 2 using the decompression prognosis for tanks 1 and 2 only (see -> 35, 36). This allows, when starting the ascent before
RBT=0, to always be able to finish a dive if by accident you were to lose the travel and/or deco bottles,
find that they are empty or in case of regulator malfunction. Note that for any tank (1, 2 or D) when you
are shallower than 6m/20ft the RBT indicates the duration of the gas supply (minus the reserve) at the current depth.
Since TEC needs to evaluate your breathing pattern and the corresponding
pressure drop in the tank, it takes about 2 minutes after you start breathing
from a tank before TEC shows the RBT.
34
VI UWATEC® Smart dive computers
Diving with more than one gas mixture
VI
Changing the gas mixture
After immersion, TEC automatically selects gas mixture 1.
4 sec DECO STOP
If during the ascent a diver reaches the depth
WARNING requiring a change of gas mixture (MOD gas mix%
ture D or 2), the imminent change is brought to
the diver’s attention by an audible attention signal
and the flashing of the tank symbol of the new
oxygen fraction of tank 1
gas mixture, both lasting for 30 seconds.
DECO STOP
…
LEVELSTOP
NO STOP
%
Procedure: • switch to the regulator with the new gas mixture and start breathing
• confirm the change by pressing and holding
(long beep)
within 30 seconds. The tank symbol will stop flashing.
change of gas mixture
confirmed
No change of gas
mixture:
If a diver fails to confirm the change of gas mixture, TEC will continue to calculate with the previous gas mixture and adapt the decompression calculation
accordingly.
Belated change of
gas mixture:
A diver can catch up on a required change of gas mixture until he reaches the
surface. By quickly pressing
the tank symbol of the new gas mixture will
start flashing.
Switch to the regulator with the new gas mixture and start breathing. Confirm
the change by pressing and holding
. The tank symbol will stop flashing
and the decompression calculation will readjust accordingly.
Submerging again
after a change
of gas mixture:
If after a change of gas mixture the Maximum Operating Depth (MOD) of the
current mixture is exceeded, the ppO2 max warning will appear. ->20
Change to the gas mixture suited for this depth and select the appropriate tank
symbol or rise to the Maximum Operating Depth of the current gas mixture.
Failure to do so can result in oxygen poisoning.
Examples for clarification of RBT and change of gas mixtures
The following figures show a dive profile and the display of various TECs in the following settings:
TEC-3: set to 21% (tank 1) and 100% (tank D)
TEC-1: set to 21% (tank 1)
TEC-4: set to 21% (tank 1), 50% (tank 2) and
TEC-2: set to 21% (tank 1) and 50% (tank D)
100% (tank D)
1. Start of ascent: the TECs have different decompression prognosis, indicating the benefit of the travel
and/or decompression gases. However, the RBT is the same for all four, as it relates to tank 1 only. It
indicates that starting the ascent within the next three minutes the diver will have enough gas for the
ascent and the decompression obligations shown on TEC-1. At RBT=3 or less, the ascent arrow is showing: TEC suggests that the diver starts the ascent.
2. Slightly below MOD for 50% mix (MOD=22m): The slow ascent has caused significant build-up of
decompression obligations. There is a marked difference in ascent times, indicating the benefit of
decompressing at high oxygen percentage.
3. Above MOD for 50%, missed switch: TEC-2 adjusts its decompression prognosis to be same as TEC1. TEC-4 adjusts its decompression prognosis to be the same as TEC-3.
4. Again below MOD for 50%: TEC-2 and TEC-4 once again show credit for the presence of the 50%
mix in their calculations.
5. Above MOD for 50%, switch carried out: TEC-2 and TEC-4 show the tank pressure in the 50% tank.
The RBT agrees because also in TEC-4 it considers the 50% tank will be used to finish the dive. TEC-1
and TEC-3 are not receiving any signals from the transmitter on the 21% tank and show “- - -“.
6. Slightly below the MOD for 100% mix (MOD=6m): During the slow ascent from 22m, TEC-2 using
50% oxygen has caught up on the decompression schedule of TEC-3, which is still using 21% oxygen
but gives credit for the upcoming switch to 100% oxygen.
VI UWATEC® Smart dive computers
35
English
VI
VI
Diving with more than one gas mixture
7. Above MOD for 100%, missed switch: now TEC-3 gives the same decompression prognosis as TEC1. TEC-4 gives the same decompression prognosis as TEC-2.
8. Again below the MOD for 100%: TEC-3 and TEC-4 again show credit for the presence of the 100%
mix in their calculations
9. Above MOD for 100%, switch carried out: TEC-3 and TEC-4 show the tank pressure in the 100%
tank. The RBT agrees. TEC-2 is not receiving anymore signals from the 50% tank and shows “- - -“.
However, the slow ascent and delayed switch to 100% has caused the decompression prognosis to be
shorter on TEC-2 than TEC-3.
TEC-1
21% tank 1
CNS O2%
CNS O2%
DECO STOP
DECO STOP
%
TEC-2
21% tank 1
50% tank D
%
%
%
DECO STOP
DECO STOP
CNS O2%
DECO STOP
%
%
DECO STOP
%
%
CNS O2%
CNS O2%
DECO STOP
DECO STOP
CNS O2%
DECO STOP
%
DECO STOP
%
%
CNS O2%
CNS O2%
DECO STOP
%
CNS O2%
DECO STOP
DECO STOP
DECO STOP
%
%
1
Depth (m)
DECO STOP
CNS O2%
%
TEC-4
21% tank 1
50% tank 2
100% tank D
DECO STOP
CNS O2%
TEC-3
21% tank 1
100% tank D
CNS O2%
2
%
3
4
0
10
20
30
40
50
60
0 Time (min)
10
TEC-1
21% tank 1
DECO STOP
CNS O2%
CNS O2%
DECO STOP
%
%
CNS O2%
DECO STOP
%
DECO STOP
DECO STOP
CNS O2%
DECO STOP
DECO STOP
%
%
%
CNS O2%
%
%
CNS O2%
%
DECO STOP
DECO STOP
DECO STOP
DECO STOP
50
CNS O2%
DECO STOP
%
9
CNS O2%
CNS O2%
%
40
%
%
DECO STOP
DECO STOP
%
8
DECO STOP
CNS O2%
DECO STOP
%
36
DECO STOP
%
%
7
CNS O2%
DECO STOP
TEC-3
21% tank 1
100% tank D
TEC-4
21% tank 1
50% tank 2
100% tank D
30
6
CNS O2%
%
TEC-2
21% tank 1
50% tank D
20
5
DECO STOP
DECO STOP
%
%
VI UWATEC® Smart dive computers
VII Dive planner
VII
Basis of the planning:
•
•
•
•
•
•
selected fraction of oxygen and MOD of all active gas mixtures
selected microbubble level
water temperature of the most recent dive
altitude range (if any)
status of saturation at the time the dive planner is selected
assuming a normal workload of the diver and observance of the prescribed
ascent rates
•
assumption: changes of gas mixture are performed at the selected MOD of
mixtures 2 and D.
WARNING
If two or more divers using computers are planning a dive, planning for all
divers has to be based on the dive computer showing the shortest no-stop
times. Failure to do this may lead to serious injury or death from decompression sickness.
Before using the dive planner, the fraction of oxygen must be entered for each required tank and the
depths for a change of gas mixture for tanks 2 and D must be entered. Tanks, i.e. gas mixtures which are
not going to be used during the next dive must be switched off (->33-34). All 'activated' gas mixtures will
be indicated by their tank symbols and allowed for calculation.
1 Planning a no-stop dive
With the contacts B and – or B and + you can select the dive planner at the
surface. (The dive planner cannot be selected in gauge mode)
The microbubble warning and
its duration are displayed if
Microbubble warning TEC detects an increased risk
(Do Not Dive)
due to the accumulation of
microbubbles.
Duration of the
warning
NO
NO
if
NO
Dive planner icon
Enter the
dive planner
Enter the dive planner with B and E.
The input window for the time interval is displayed
if there was a remaining desaturation (DESAT) before the Dive Planner has been selected. This surface
interval between now and the beginning of the dive
can be changed with the contacts + and – in steps
of 15 minutes.
if rep. dive
If a microbubble warning (no dive) and its duration has been displayed, TEC proposes this time –
rounded up to the next 15 minutes – as surface
interval. If the proposed interval is shortened, the
microbubble warning appears.
NO
Input of the
surface interval
Icon for
microbubble
level 1-5
CNS O2%
NO STOP
%
No-stop time or
MB no-stop time
VII UWATEC® Smart dive computers
+
–
With B and E you confirm the displayed interval (if applicable), then TEC starts
scrolling the no-stop times. The no-stop times are displayed in 3 metre increments (10 ft) and are displayed for every increment for about 2 seconds. The
process starts at 3 metres (10 ft).
If a microbubble level has been selected (L1-5), the MB no-stop time is
shown.
No-stop times will be displayed as long as the selected maximum operating
depth (MOD) of tank 1 is not exceeded.
On page 24 you will find further information and safety considerations
regarding the microbubble warning.
NO
37
English
TEC has a dive planner which allows the planning of no-stop dives as well as decompression dives with
freely determinable surface intervals and with up to three different gas mixtures.
VII Dive planner
2 Planning a decompression dive
1. Activate the dive planner for a no-stop dive ->37.
2. Wait until the desired depth appears, then switch into decompression planning by bridging contacts B and E. TEC shows the bottom time (no-stop time
+ 1 minute) and the appropriate decompression information or level stop
data respectively.
3. <Add> asks that you set the bottom time. This is done with contacts B and
+, B and – respectively. As soon as the contacts are no longer bridged, TEC
calculates the decompression information or level stop data respectively for
this set bottom time.
NO STOP
%
CNS O2%
DECO STOP
%
Bottom Time +
–
If you wish to plan a decompression dive at another depth, switch from decompression planning to no-stop planning by means of B and E. TEC again shows
the scrolling no-stop times. Now you can switch between no-stop planning and
decompression planning at will with contacts B and E.
If the calculated decompression information and the total ascent time exceed
199 minutes, or the CNS O2 % value exceeds 199%, the said values will start
flashing on the display or <– –> values appear and the decompression calculation is suspended until the bottom time has been reduced accordingly. CNS
O2% values higher than 199% will be displayed as 199 %.
3 Leaving the dive planner
With the contacts B and E (1-2 sec) you can exit the Dive Planner. This also
occurs after three minutes without operation.
38
VII UWATEC® Smart dive computers
VIII Logbook
VIII
English
1 Survey
A dive is entered in the logbook if the dive time is longer than 2 minutes. TEC records the profiles of about
100 hours of diving. This information can be transferred to a PC with the standard infrared interface (IrDA)
and the Windows® software SmartTRAK. Up to 99 dives can be displayed directly on the dive computer.
The following information of the dive is displayed:
Diving in gauge mode
MB level reduced*
Logbook icon
Ignored decompression stop* or
diving in SOS mode
CNS O2%
Too fast ascent*
Altitude range (if any)
DECO
Maximum depth / Lowest temp. / MB level
(at the beginning of the dive)
Fraction of oxygen tank 1
"
tank 2
"
tank D
%
Dive time
Dive number
CNS value at the end of the dive
Duration of surface interval (only with repetitive dives)
Increased workload warning*
dP = differential pressure (gas consumed)
Gas consumed (bar or psi) from tank 1 (displays only those gas
"
tank 2 mixtures used during the dive)
"
tank D
Ignored decompression stop*
*Alarms during the dive
If a dive is started within adaptation time (after a change of altitude), the
adaptation time is displayed instead of the surface interval.
2 Operation
With the contacts B and + or B and – you can select the logbook. With B and
E you enter the logbook.
If there was a remaining desaturation time (DESAT) before selecting the logbook, the time since the last dive (surface interval) is displayed.
With B and E you get the most recent dive displayed (LOG 1).
CNS O2%
Each bridging of B and + or B and – causes a jump to the next older or more
recent dive. Upon continuous bridging of the contacts all dives are displayed
successively.
%
With the contacts B and E you can exit the logbook.
The logbook closes automatically after 3 minutes without operation.
VIII UWATEC® Smart dive computers
39
IX Appendix
1 Technical information
Operating altitude:
with decompression information: sea level up to approx. 4000 m (13120ft);
w/o decompression, w/o RBT information: usable in gauge mode (at any altitude)
120m (395 ft), resolution between 0.8 m and 99.9 m: 0.1 m, >99.9 m: 1m
The resolution in feet is always 1 foot
Max. displayed depth:
WARNING
• Do not dive deeper than the limits given by the chosen fraction of oxygen
(nitrogen narcosis, oxygen toxicity).
• Never dive deeper than your training qualification (experience) allows you.
• Always observe local dive depth restrictions.
Decompression calculation depth range:
0.8 to 120m (3 to 395 ft)
Maximum environment pressure:
13 bar (189 psi)
Clock:
Quartz timer, display up to 999 minutes.
O2% Mix:
Adjustable between 21%O2 (compressed air) and 100% O2
Operating temperature: -10° to +50°C (14°F to 122°F).
Power supply:
Special battery UWATEC LR07
Life of the battery:
500 to 800 dives, depending on the quantity of dives per year and the use of
the backlight.
Transmitter:
High pressure connection: Maximum working pressure: 300 bar (4350 psi)
Life of the battery:
up to 1000 dives, max. 3 years without use.
Power supply:
User replaceable battery CR2450
2 Maintenance
The tank pressure gauge and the parts of this product used to measure the tank pressure should be serviced
by an authorized SCUBAPRO UWATEC dealer every second year or after 200 dives (whichever comes first).
Aside from that your TEC is virtually maintenance free. All you need to do is to rinse it carefully with fresh
water after each use and to have the batteries changed when needed. To avoid possible problems with your
TEC, the following recommendations will help assure that it will give you years of trouble free service:
WARNING
WARNING
•
•
•
•
•
Avoid dropping or jarring your TEC.
Do not allow your TEC to be exposed to direct, intense sunlight.
Rinse your TEC thoroughly with fresh water after each dive.
Do not store your TEC in a sealed container; make sure there is free ventilation.
If there are problems with operating the contacts, use soapy water to clean
TEC and dry it thoroughly. The surface of your TEC housing can be treated with
silicone grease. Do not apply grease to the water contacts!
• Do not clean TEC with liquids containing solvent (apart from water).
• If the service icon appears, TEC must not be used for any further dives. Take
your dive computer to an authorized SCUBAPRO UWATEC dealer.
Take the dive computer to an authorised SCUBAPRO UWATEC dealer in order
to change the batteries. The battery replacement is carried out by a SCUBAPRO UWATEC subsidiary. TEC is checked for its technical integrity at the same
time. Do not attempt to have the batteries changed by anyone other than an
authorised SCUBAPRO UWATEC dealer.
2.1 Replacing the battery of the transmitter
WARNING
It is recommended to have the battery of the transmitter replaced by an
authorized SCUBAPRO UWATEC dealer. The change must be made with particular care in order to prevent water from seeping in.
The warranty does not cover damages due to an improper replacement of the
battery.
Transmitter battery set (PN 06.201.920): Includes a Type CR 2450 battery and a 26.00 x 2.00 mm transmitter cap o-ring .
40
XI UWATEC® Smart dive computers
IX Appendix
IX
Never touch the metal surface of the battery with bare fingers.
The two battery poles must never be short circuited.
Transmitter Battery
CR2450
Transmitter Cap
English
WARNING
HP port o-ring
8.73 x 1.78 mm
Transmitter screws
PT®KA 30 x 16 mm
Transmitter cap o-ring
26.00 x 2.00 mm
Procedure:
To replace the battery you need a Phillips screwdriver and a clean cloth.
WARNING
• A leaking transmitter cap may lead to the destruction of the transmitter by
water seeping in or cause the transmitter to switch off without prior notice.
• Always open the transmitter in a dry and clean environment.
• Only open the transmitter to replace the battery.
1. Remove the transmitter from the HP outlet of the first stage of the regulator.
2. Dry the transmitter with a soft towel.
3. Remove the 3 screws with the Phillips screwdriver.
4. Remove the transmitter cap carefully.
5. Remove the transmitter cap o-ring carefully. Do not damage the sealing surfaces.
6. Remove the battery by holding it on both sides. Do not touch the contacts or electronic
parts.
Protect the environment and dispose the battery properly.
WARNING
If you notice traces of seeping water, damages, or other defects on the o-ring,
do not use the transmitter for further dives. Take it to an authorized SCUBAPRO UWATEC dealer for check and repair.
7. Always insert a new o-ring when you replace the battery and dispose the old o-ring.
Make sure that the new, lubricated o-ring is in perfect condition, and that o-ring, o-ring groove and
the sealing surfaces of HP outlet and transmitter cap are free of dust and dirt.
If necessary, clean the parts with a soft cloth. Fit the o-ring in the o-ring groove.
WARNING
8. Check the proper polarity of the battery. The transmitter can be damaged
if you do not insert the battery correctly.
Wait for at least 30 seconds. Now insert the new battery, with "+" pointing upwards, into the battery
compartment.
9. After battery replacement the transmitter will perform an automatic test and switch into ready mode
after 60 seconds.
IX UWATEC® Smart dive computers
41
IX Appendix
WARNING
10. The transmitter cap will only fit in one position. Check the proper position
of the guide slots on the electronic support and in the transmitter cap.
Slide the transmitter cap carefully back into its proper position.
11. Do not overtighten the screws! Fasten the transmitter cap with the 3 screws.
12. Mount the transmitter on the HP outlet of the first stage of the regulator and check transmission and
pairing. If you do not receive valid tank pressure data, transmitter and dive computer must be paired
again.
3 Conversion of tank pressure
Tank pressure indicated may differ from the information given by a manometer/pressure gauge. TEC displays pressure always converted to a temperature of 20°C / 68°F, whereas the mechanical pressure gauge
displays the current pressure influenced by temperature.
The figure below allows you to compare the information given by a conventional pressure gauge and by
TEC at six different temperatures.
bar psi
260 3770
Display pressure gauge
240 3480
220 3190
200 2900
35o C 95o F
30o C 86o F
20o C
10o C
5o C
0o C
68o F
50o F
41o F
32o F
180 2610
160 2320
140 2030
120 1740
150 160 170 180 190 200 210 220 230 bar
2175 2320 2465 2610 2755 2900 3045 3190 3335 psi
Display Smart TEC
4 Warranty
The warranty only covers dive computers which have been bought from an authorised SCUBAPRO
UWATEC retailer.
The warranty is given for a period of 2 years.
Repairs or replacements during the warranty period do not increase the warranty period.
In order to put forward a warranty claim: send the dive computer together with a dated receipt of the
purchase to your authorised retailer or an authorised servicing point.
UWATEC reserves the right to determine the merits of a warranty claim and to determine whether the
computer will be repaired or replaced.
42
IX UWATEC® Smart dive computers
IX
Excluded are faults or defects due to:
• excessive wear and tear;
• exterior influences, e.g. transport damage, damage due to bumping and hitting, influences of weather
or other natural phenomena;
• servicing, repairs or the opening of the dive computer by anybody not authorised by the manufacturer. This especially concerns the change of battery;
• pressure tests which do not take place in water;
• diving accidents;
• improper placement of the transmitter cap.
5 FCC
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
6 Index
Active backlight___________________________11
Ascent rate________________________15, 17, 19
Battery alarm _____________________________17
Battery capacity, Checking the… ____________10
Battery lifetime ___________________________40
Beep, Switch off the… _____________________17
Changing the gas mixture ______________26, 34
CNS O2 ________________2, 3, 15, 16, 17, 21, 39
Deco data during decompression phase ______15
Deco data during no-stop phase ____________15
Decompression stop, Ignored… __________17, 23
Depth, current ____________________________19
Desaturation time _________________________24
Dive ____________________________________15
Dive planner _____________________________37
Dive time ________________________________19
Dive, end of a dive ________________________24
Fly, "no-fly time" ______________________10, 24
Gas mixture, Setting… _____________________18
Gauge mode _____________________________26
Light ____________________________________11
Logbook _________________________________39
Maintenance _____________________________40
Maximum depth_______________________19, 39
Microbubbles_____________________________28
Microbubbles, Warning of… ____________24, 37
Mountain lakes, Diving in… ____________25, 39
Mounting the transmitter to the first stage ___12
Nitrox
______________________________16
iX UWATEC® Smart dive computers
No-stop time ______________________15, 22, 28
O2% mix, Set up… ________________________18
O2 fraction ________________________15, 16, 18
O2 partial pressure__________________16, 17, 20
O2 partial pressure, maximum ___________16, 20
O2 toxicity __________________15, 16, 17, 21, 39
Operating TEC ________________________4, 8, 9
Oxygen…, see "O2…"
PC, transfer to PC (logbook) ________________39
ppO2, see O2 partial pressure
Premix, setting the gas mixture______________18
RBT ______________________________15, 17, 22
Safety stop timer__________________________23
Setting the MOD ______________________18, 33
SmartTRAK ___________________8, 9, 16, 17, 39
SOS mode _______________________________11
Stopwatch _______________________________27
Surface interval________________________37, 39
Switching off gas mixtures__________________34
System ___________________________________8
Tank pressure ____________________________21
Technical information ______________________40
Transmitter _________________________8, 12, 40
Warnings ________________________________17
Workload _______________________________21
Workload, Increased… ____________________ 21
43
English
IX Appendix
SCUBAPRO UWATEC Americas
(USA/Canada/Latin America)
1166 Fesler Street
El Cajon, CA 92020 USA
t: +1 619 402 1023
f: +1 619 402 1554
www.scubapro.com
SCUBAPRO UWATEC France
Les Terriers Nord
175 Allée Belle Vue
F-06600 Antibes
t: +33 (0) 4 92 91 30 30
f: +33 (0) 4 92 91 30 31
www.scubapro-uwatec.com
SCUBAPRO UWATEC Asia Pacific
1208 Block A, MP Industrial Center
18 Ka Yip St.
Chai Wan Hong Kong
t: +852 2556 7338
f: +852 2898 9872
www.scubaproasiapacific.com
SCUBAPRO UWATEC Benelux
Avenue des Arts, 10/11 Bte 13
1210 Bruxelles
t: +32 (0) 2 250 37 10
f: +32 (0) 2 250 37 11
www.scubapro-uwatec.com
SCUBAPRO UWATEC Australia
Unit 21, 380 Eastern Valley Way
Chatswood, N.S.W. 2067
t: +61 2 9417 1011
f: +61 2 9417 1044
www.scubapro.com.au
SCUBAPRO UWATEC Deutschland
(Germany / Austria / Scandinavia)
Taucherausrüstungen GmbH
Rheinvogtstraße 17
79713 Bad Säckingen-Wallbach
t: +49 (0) 7761 921050
f: +49 (0) 7761 921051
www.scubapro.de
SCUBAPRO UWATEC Italy
Via G.Latiro 45
I-16039 Sestri Levante (GE)
t: +39 0185 482 321
f: +39 0185 459 122
www.scubapro.it
SCUBAPRO UWATEC España
Pere IV, nº359, 2º
08020- Barcelona
t: +34 93 303 55 50
f: +34 93 266 45 05
www.scubapro-uwatec.com
SCUBAPRO UWATEC U.K.
Vickers Business Centre
Priestley Road
Basingstoke, Hampshire RG24 9NP
England
t: +44 0 1256 812 636
f: +44 0 1256 812 646
www.scubapro.co.uk
SCUBAPRO UWATEC Switzerland
Oberwilerstrasse 16
CH-8444 Henggart
t: +41 (0) 52 3 16 27 21
f: +41 (0) 52 3 16 28 67
www.scubapro.de
SCUBAPRO UWATEC Japan
4-2 Marina Plaza 5F
Kanazawa-Ku
Yokohama
Japan
t: +81 45 775 2288
f: +81 45 775 4420
www.scubapro.co.jp
www.uwatec.com
9.04
UWATEC® Smart dive computers
Deutsch
English
Français
Operating Manual
Smart Z
®
SWISS MADE BY UWATEC AG
Safety considerations
You must carefully read and understand this entire manual before using your new computer.
WARNING
Diving has many inherent risks. Even if you follow the instructions of this
manual in a careful manner, it is still possible that you may be seriously injured
or die from decompression sickness, oxygen toxicity or some other inherent
risk of scuba with Nitrox or compressed air. Unless you are fully aware of these
risks and are willing to personally accept and assume responsibility for those
risks, do not use the computer!
Guidelines for the use of your UWATEC dive computer:
The following guidelines are derived from the latest medical research and the recommendations of the
American Academy of Underwater Sciences for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness
or oxygen toxicity will not occur.
• This computer is designed for dives with Nitrox (to a max.100% O2) and compressed air (21%O2) only.
Do not use the computer for dives made with other mixed gases.
• It is absolutely necessary to check the set mixture before each dive and to compare it to the gas mixture
currently used. Always remember: setting an incorrect mixture carries an inherent risk of decompression
sickness and/or oxygen toxicity! Maximum deviation from the measured mixture must not exceed 1%
O2. An incorrect gas mixture can be lethal!
• Only use this computer with open circuit breathing systems. The computer must be set for a determined
gas mixture.
• Only use this computer for diving with an independent breathing apparatus. The computer is not
designed for long term exposures with Nitrox.
• Always observe the visual and audible alarm signals of the computer. Avoid situations of increased risk
which are marked with a warning sign in this operating manual.
• If the ascent arrow appears, start to ascend.
• If the flashing ascent arrow appears, start to ascend immediately.
• This computer has a ppO2 warning, the default limits of which are set at 1.4 bar ppO2max. This limit
can be adjusted via SmartTRAK. An alteration of the ppO2max to higher than 1.6 bar is dangerous and
we do not recommend this.
• Frequently check the "oxygen clock" (CNS O2), especially in the range higher than 1.4 bar ppO2.
Ascend and finish the dive if the CNS O2 exceeds 75%.
• Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas mixture in use.
• Always check the diving limits considering the oxygen content and standard sports diving procedures
(decompression sickness, oxygen toxicity).
• In accordance with the recommended maximum diving limit of all instructional agencies, do not dive
deeper than 40 metres/130 feet.
• The danger of nitrogen narcosis has to be taken into consideration. The computer gives no warning
about this.
• On all dives, with or without dive computer, make a safety stop for at least 3 minutes at 5 metres
(15 feet).
• All divers using dive computers to plan dives and indicate or determine decompression status must use
their own computer, which they take with them on all dives.
• If the computer fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 ft) should be
initiated immediately.
• Comply with the ascent rate and carry out any decompression stop required. If the computer should
fail for any reason, you must ascend at a rate of 10m (30 feet) per minute or less.
• On any given dive, both divers in a buddy pair must follow the most conservative dive computer for
that particular dive.
• Never dive without a buddy. Smart Z does not substitute for a dive buddy.
• Only make dives that are appropriate to your level of dive training. A dive computer does not increase your
knowledge of diving.
2
UWATEC® Smart dive computers
• Always dive with back-up instruments. Make sure that you always use back-up instrumentation
including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, and have
access to decompression tables whenever diving with a dive computer.
• Avoid repeated ascents and descents (yo yo diving).
• Avoid repeated heavy workload while at depth.
• Plan the dives to be shorter if they are made in cold water.
• After finishing the decompression or at the end of a no-stop dive, the final stage of the ascent should
be as slow as possible.
• You MUST be familiar with all signs and symptoms of decompression sickness before using this computer! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms
occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay
between the onset of symptoms and the treatment for decompression sickness.
• Only dive with Nitrox after you have been thoroughly instructed by a recognised institution.
Repetitive dives
• Do not start your next dive before your CNS O2% status has dropped below 40%.
• Diving with Nitrox: Make sure your surface interval is long enough (just like diving with compressed
air). Plan for a minimum surface interval of two hours. Oxygen, too, needs sufficient time to leave
the body.
• Match gas mixture to the intended dive.
is visible on the display.
• Do not attempt a repetitive dive if the microbubble warning
• Plan a day without diving once a week.
• If you have to change computers, wait at least 48 hours before carrying out your next dive.
NO
Altitude and diving
• Do not dive at altitudes higher than 4000m (13000 feet).
• After a dive do not rise to altitudes that the computer prohibits via the flashing altitude
segments (see page 25).
Flying after diving
• After diving, wait at least 24 hours prior to flying.
Smart Z dive instrument is a personal protective equipment in compliance with the essential safety
requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa,
notified body no. 0474, have certified the conformity with the European Standard EN 250:2000 and
EN 13319:2000.
EN250:2000 Respiratory equipment - Open circuit self contained compressed air diving apparatus Requirements, testing, marking (pressure gauge test).
EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices Functional and safety requirements, test methods. Any information on decompression obligation displayed
by equipment covered by this standard is explicitly excluded from its scope.
UWATEC® Smart dive computers
3
English
I
Safety considerations
Introduction
Congratulations on purchasing a Smart Z dive computer and welcome to UWATEC. From now on you will
enjoy the assistance of the most extraordinary dive computer - equipped with UWATEC's most innovative
technology - while diving.
We thank you for choosing this computer and we hope you will enjoy safe dives in the future!
Further information on UWATEC Smart dive computers and other products by UWATEC can be found on
our web page at www.uwatec.com.
To make this manual easier to read we will use the term 'Smart Z' as an abbreviation for 'UWATEC Smart
Z diving computer' throughout this booklet.
Safety considerations
Dive computers provide divers with data; they, however, do not provide the knowledge how this data
should be understood and applied. Dive computers cannot replace common sense! You must therefore
carefully read and understand this entire manual before using your Smart Z.
Important remarks concerning signal words and symbols
This operating manual makes use of the following icons to indicate especially important comments:
Remarks
Information and tips which are important for optimal use of the functions of
Smart Z.
Danger!
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
The following symbols are used in the operating manual:
Flashing display
->
Page reference
e.g. ->10
Audible signals
4 sec.
Audible attention signal
Audible alarm signal
Instructions for manual input
–+E
Bridge contacts
Example: bridging contacts B and E
B
April 2005, Copyright© by UWATEC Switzerland
4
UWATEC® Smart dive computers
Quick reference
I
O2 mix icon (input)
Temperature
Microbubble level icon (input / MB level reduced)
Current depth
Dive time / No-fly time / SOS duration
NO
Service icon
Logbook indicator
Total ascent time / Dive number
Ascent time icon
Desaturation time indicator
No-stop time / Decompression duration / MB no-stop time
Level stop duration / Duration of Microbubble Warning
Desaturation duration / Duration of surface interval
NO
CNS O2%
Gauge icon
Altitude sections
Too fast ascent
Ascent obligation
DECO STOP
LEVELSTOP
NO STOP
Maximum depth
Microbubble level
Maximum Operating
Depth (MOD)
O2 mix
%
Increased workload warning
Remaining bottom time RBT
Tank pressure warning
Transmitter warning
Decompression stop obligation
Ignored decompression stop
Tank pressure / Gas consumed
Partial pressure of oxygen ppO2
Decompression depth / Level stop depth
Level stop indicator
No-stop indicator
Decompression stop indicator
Oxygen toxicity CNS O2%
Ascent rate
Battery capacity
Operating scheme
Start / Confirmation / Enter
+ / Navigate
– / Navigate
Display
switched off
Switching on
Dive planner
Microbubble level
O2 mix
Logbook
Gauge mode
Navigation
(
+ Surface
– interval
%
)
CNS O2%
%
CNS O2%
Battery capacity
%
+ Percentage
– of oxygen
NO STOP
%
%
+ Bottom time
–
+ Dive number
–
Exit (2 sec.)
Exit
+
–
Microbubble
level
+
–
Gauge mode
on and off
+ Maximum
operating
– depth (MOD)
Confirmation
Confirmation
Confirmation
Display switches off automatically after 3 minutes without operation.
UWATEC® Smart dive computers
5
English
Do not fly icon
Do not dive icon
Microbubble warning
Logbook icon
Dive planner icon
List of chapters
I
Safety considerations
___________________________________ 2
Introduction
___________________________________ 4
Important remarks concerning signal words and symbols ______________________________ 4
Quick reference / Operating scheme
___________________________________ 5
List of chapters
___________________________________ 6
II
1
System and operation
System description
___________________________________ 8
___________________________________ 8
2
Operation
2.1 Operating elements
2.2 SmartTRAK
2.3 Switching on the display
2.4 Checking the battery capacity
2.5 Selection and activation of user functions
2.6 Active backlight
2.7 Switching off the display
___________________________________ 8
___________________________________ 8
___________________________________ 9
__________________________________ 10
__________________________________ 10
__________________________________ 10
__________________________________ 11
__________________________________ 11
3
SOS mode
__________________________________ 11
4
Setting up Smart Z
4.1 Mounting of transmitter
4.2 Pairing of transmitter and dive computer
__________________________________ 12
__________________________________ 12
__________________________________ 13
III Diving with Smart Z
__________________________________ 15
1 Terminology / Symbols
__________________________________ 15
1.1 General terminology / Display during no-stop phase __________________________________ 15
1.2 Display during decompression phase /
Remaining Bottom Time
__________________________________ 15
__________________________________ 16
1.3 Nitrox information (O2 information)
2
Attention messages and alarms
2.1 Attention messages
2.2 Alarms
__________________________________ 17
__________________________________ 17
__________________________________ 17
3
Preparation for the dive
3.1 Setting the gas mixture and MOD
3.2 Setting the MB level
3.3 Preparation for the dive and function check
__________________________________ 18
__________________________________ 18
__________________________________ 18
__________________________________ 18
4
Functions during the dive
__________________________________ 19
4.1 Immersion
__________________________________ 19
4.2 Dive time
__________________________________ 19
4.3 Current depth
__________________________________ 19
4.4 Maximum depth
__________________________________ 19
4.5 Temperature
__________________________________ 19
4.6 Ascent rate
__________________________________ 19
4.7 Partial pressure of oxygen (ppO2) / Maximum Operating Depth (MOD) ___________________ 20
__________________________________ 21
4.8 Oxygen toxicity (CNS O2%)
4.9 Tank pressure
__________________________________ 21
4.10 Remaining Bottom Time (RBT)
__________________________________ 22
4.11 Decompression information
__________________________________ 22
5
Functions at the surface
5.1 End of a dive
5.2 Desaturation time
5.3 No-fly time
5.4 Microbubble warning
6
__________________________________ 24
__________________________________ 24
__________________________________ 24
__________________________________ 24
__________________________________ 24
UWATEC® Smart dive computers
6
Diving in mountain lakes
6.1 Altitude ranges
6.2 Prohibited altitude
6.3 Decompression dives in mountain lakes
I
__________________________________ 25
__________________________________ 25
__________________________________ 25
__________________________________ 25
IV Gauge mode
__________________________________ 26
V
1
2
Diving with microbubble levels (MB)
Comparison of dives with MB level L0 and MB level L5
Terminology
2.1 Display during microbubble (MB) no-stop phase
2.2 Display during level stop phase
__________________________________ 28
__________________________________ 28
__________________________________ 29
__________________________________ 29
__________________________________ 29
3
Preparation for a dive with microbubble levels (MB levels) __________________________________ 30
3.1 Setting the MB level
__________________________________ 30
4
Functions during the dive with microbubble levels
4.1 Level stop information
4.2 Total time of ascent
4.3 Decompression obligation
4.4 Level stop and deco stop
__________________________________ 30
__________________________________ 30
__________________________________ 31
__________________________________ 31
__________________________________ 32
5
Complete a dive with MB levels
__________________________________ 32
VI
1
2
3
Dive planner
Planning a no-stop dive
Planning a decompression dive
Leaving the dive planner
__________________________________ 33
__________________________________ 33
__________________________________ 34
__________________________________ 34
VII Logbook
1 Survey
2 Operation
__________________________________ 35
__________________________________ 35
__________________________________ 35
VIII Appendix
1 Technical information
2 Maintenance
2.1 Replacing the battery of the transmitter
3 Conversion of tank pressure
4 Warranty
5 FCC
6 Index
__________________________________ 36
__________________________________ 36
__________________________________ 36
__________________________________ 36
__________________________________ 38
__________________________________ 38
__________________________________ 39
__________________________________ 39
UWATEC® Smart dive computers
7
English
List of chapters
II System and operation
1 System description
Smart Z displays all important dive and decompression data and comes with a unique receiver which can
receive tank pressure data from a transmitter. Mounted at the high pressure (HP) outlet of the regulator, the
transmitter measures the tank pressure and radio transmits the information to Smart Z. UWATEC's specially
patented transmission process prevents interference and ensures continuous and reliable reception.
Smart Z has a data memory which stores the dive data. The data can be transmitted with an infrared interface (IrDA) and the SmartTRAK software to a Windows® personal computer.
The SmartTRAK CD software is included with the Smart Z Package. Infrared interfaces are available in PC
stores. A list of recommended interfaces is available on the UWATEC homepage (www.uwatec.com).
Infrared port
Pressure transmitter
SmartTRAK
Infrared Interface
(option)
2 Operation
On page 5 you will find an operating schematic.
2.1 Operating elements
Contacts
�
�
�
Smart Z has 4 operating contacts B, E, +, – on the outside of the housing. For
manual operation, touch base contact B and any one of the other three contacts
above the display with moistened fingers («bridging» contacts).
Contact B: Base contact, which has to be touched for all operations.
Contact E: Enter contact. It serves to switch on Smart Z and to confirm or
enter the displayed value. It is therefore comparable to the ENTER or RETURN
key of a keyboard.
+ / – Contacts: These allow to navigate between menus and, once inside a
menu, to increase or decrease the indicated value.
�
8
UWATEC® Smart dive computers
II
II System and operation
2.2 SmartTRAK
With SmartTRAK you can transfer dive data to a personal computer and graphically display the data.
• Unit system
metric/imperial
• Audible attention signal suppression
selective
• Gauge mode
on / off
• Depth alarm
5 - 100 m (20 - 330 feet)
• Backlight illumination duration
2-12 sec.
• Maximum partial pressure of oxygen (ppO2 max)
1-1.95 bar
• Time limit to reset the O2 % mix to air
no reset / 1 - 48 hrs.
• Minimum reserve pressure at the end
of the dive (basis for RBT calculation)
20 – 120 bar (300 - 1750 psi)
• Tank pressure alarm
50 - 200 bar (750 - 2900 psi)
• Workload sensitivity
25 steps
English
The following settings may be changed with SmartTRAK:
The following data may be recalled with SmartTRAK:
• Number of past dives
• Total duration of past dives
• Atmospheric pressure
• Pairing information
• Dive profile
• Logbook
• Temperature curve
• Workload curve
• Alarms and attention messages
UWATEC® Smart dive computers
9
2 Operation
2.3 Switching on the display
• automatically, on submerging in water or when adaptation to atmospheric
pressure is necessary;
• manually, by bridging contacts on housing (B-E).
• When Smart Z is in state of rest no information is displayed
but the atmospheric pressure is continuously monitored. If
a higher altitude range is detected, Smart Z switches on for
3 minutes automatically -> 25.
NO
NO
CNS O2%
DECO STOP
LEVELSTOP
NO STOP
• Smart Z switches on by bridging the contacts B and E. All
segments light up for 5 seconds.
%
Temperature
Afterwards the display shows the selected O2 mix, the
temperature and in certain circumstances an altitude range
->25.
O2 Mix
%
Do not fly icon
If the transmitter is switched on and located within transmitting distance, the tank pressure is displayed, otherwise
"---" will be displayed. If no transmitter has been paired yet,
the display will be blank.
NO
CNS O2%
No-fly time
Oxygen toxicity
%
Desaturation time
If there is a remaining saturation due to the last dive or
change of altitude, Smart Z also displays the remaining
desaturation time, the oxygen toxicity and the "no-fly time"
->24.
2.4 Checking the battery capacity
After switching on Smart Z you can check the battery capacity by bridging
the contacts B and E. The remaining capacity is displayed for 3 seconds as
a percentage. If the value reaches 0%, the battery warning gets activated
(->17) and the battery has to be replaced by an authorised SCUBAPRO UWATEC
dealer.
Battery capacity
For a 7-day diving vacation Smart Z uses between 2 – 5 % of its battery capacity.
2.5 Selection and activation of user functions
Gauge mode ->26
Input microbubble level ->30
Input O2 mix ->18
Logbook ->35
At the surface you can select the dive planner, the logbook
and gauge mode as well as the functions to enter the O2%
mix and the microbubble levels by bridging the contacts
+ and B or – and B.
Dive planner ->33
After the selection of the desired function you can activate and deactivate it by
bridging the contacts B and E.
Details to the user functions are to be found on the pages mentioned above.
10
UWATEC® Smart dive computers
II
2 Operation / 3 SOS mode
The display of Smart Z can be illuminated both on the surface
and underwater.
The backlight can be activated by pressing on top of the case.
The light will turn off automatically after 8 seconds or after the
time selected via SmartTRAK.
The backlight can only be activated if the computer display is
on.
2.7 Switching off the display
On the surface Smart Z switches off automatically after 3 minutes without
operation.
3 SOS mode
Time remaining until
SOS mode switches
off automatically
NO
NO
CNS O2%
%
Activation: automatic
If the diver remains above a depth of 0.8m (3 feet) for more than three minutes
without observing a prescribed decompression, the computer will automatically
switch into SOS mode after the dive.
The display shows the "SOS" sign and the remaining length of the SOS mode.
The dive will be entered in the logbook with "SOS". Other than that the SOS
mode has no further impact on the displays and functions on the surface.
• Serious injury or death may result if a diver does
not seek immediate treatment should any signs
or symptoms of decompression sickness occur
after a dive.
• Do not dive to treat symptoms of decompression sickness!
• Diving in SOS mode is extremely dangerous and you must assume full
responsibility for such behaviour. UWATEC will assume no liability.
WARNING
Once in the SOS mode, the computer will lock up and will be inoperable as a
diving instrument for 24 hours.
A diving accident can be analyzed at any time in the logbook and downloaded
to a PC by means of the infrared interface (IrDA) and the SmartTRAK software.
UWATEC® Smart dive computers
11
English
2.6 Active backlight
4 Setting up Smart Z (transmitter and dive computer)
4.1 Mounting of transmitter
The transmitter is mounted at the high pressure (HP) outlet of the regulator’s first stage before the first
dive.
WARNING
Use air and Nitrox components in accordance with the law of the country.
Procedure:
HP
(Adaptor)
Do not hold the transmitter
by its plastic part.
Mount the transmitter at the HP
oulet. If the threads do not match,
you can get a fitting adaptor at your
diving equipment retailer.
Tighten the transmitter by
means of a size 3/4" wrench.
The transmitter is best mounted laterally on the regulator.
It is advisable to mount the transmitter on the same side that the computer is located. This is the optimal
position for transmission.
12
Position of the transmitter
for left handers.
Position of the transmitter
for right handers.
Position of the transmitter for left
handers, if there is no connection
possible on the left hand side.
Position of the transmitter for right
handers, if there is no connection
possible on the right hand side.
UWATEC® Smart dive computers
II
4 Setting up (transmitter and dive computer)
4.2 Pairing of transmitter and dive computer
To receive the data of the transmitter, the transmitter itself must be paired with Smart Z.
Pairing is necessary:
English
• before the first use of Smart Z with the transmitter;
• if you use a new transmitter or a new computer;
• after changing the battery.
Pairing procedure:
1. Shut the valve, depressurise the regulator and wait for 15 seconds.
2. Switch on Smart Z (bridge contacts B and E).
3. Move the dive computer and transmitter into the
shown position.
Transmitter and dive computer must be in physical
contact during the entire pairing procedure.
4. Open the tank valve. The transmitter briefly sends a pairing sequence to the
computer.
5. The dive computer shows a flashing "PAIr" shortly after the valve has been
opened.
%
6. In order to confirm the pairing, the B and E contacts have to be bridged within 5 sec. A beep confirms the input and the "PAIr" display remains still.
%
10 sec.
7. "PAIr" disappears after approx. 10 sec.
%
%
In case of faulty pairing, the display "FAIL" appears instead of "PAIr". In that
case, completely purge the regulator and repeat the pairing procedure. This is
only possible after at least 15 seconds.
• Pairing of transmitter and dive computer may already be carried out at home
and need only be executed once, before the first use.
• You may delete the pairing of transmitter and dive computer by means of
the SmartTRAK software.
UWATEC® Smart dive computers
13
4 Setting up Smart Z
How to check if transmitter and computer are paired correctly:
%
Pairing ok
%
Pairing present, no pressure
data available
%
Pairing not present
14
1.
2.
3.
4.
Switch on the computer manually (B and E)
Move the computer into transmitting range of the transmitter.
Open the tank valve. The transmitter switches on automatically.
Check the display: Pairing has been carried out correctly if the pressure is
displayed within 5-10 seconds.
If the transmitter has been correctly paired, but Smart Z cannot receive the tank
pressure, "- - -" will appear on the display. In that case, check the position of
transmitter and dive computer.
If the transmitter has not been paired, or if an existing pairing has been
deleted via SmartTRAK, the display will remain empty.
In that case, transmitter and computer must be paired again.
UWATEC® Smart dive computer
III Diving with Smart Z
III
1 Terminology / Symbols
For information about diving with microbubble levels (MB levels) see chapter V
->28.
1.1 General terminology / Display during no-stop phase
Oxygen toxicity
CNS O2%
Ascent rate
(Only while
ascending)
Dive time
Duration of
the dive (min)
Decompression phase
Dive phase during which surfacing is allowed
without stop.
Dive phase during which
surfacing is allowed only
after decompression
stops are completed.
%
SPEED
Current depth
In metres (feet)
Depth
Time
Temperature
No-stop time
Remaining time
at a given depth
during which ascent
is allowed without
decompression
stop (min).
CNS O2%
NO STOP
%
Tank
pressure
No-stop phase
RBT, Remaining
bottom time
24min
Current depth
26.2 m Maximum depth
O2% Mix
Selected oxygen fraction
No-stop time
37 min. Dive time
Elapsed bottom time
Maximum depth
reached during the dive
1.2 Display during decompression phase / Remaining Bottom Time (RBT)
Total ascent time to surface (7 min)
Time
3m
Depth
Decompression stop
All required decompression
stops must be observed.
6m
Decompression stop duration 2 min
Deepest
decompression
stop depth
CNS O2%
DECO STOP
%
Decompression
stop depth
Deepest stage is
displayed.
Decompression
stop duration
Prescribed duration of the
decompression stop at the
displayed decompression
stage (minutes).
UWATEC® Smart dive computers
RBT 21 min
35.7 m
No-stop range
Total ascent time
Including decompression
stops in minutes.
Decompression range
Remaining Bottom Time, RBT
Maximum remaining time at current
depth including all decompression
obligations (minutes).
15
English
The information on the display of Smart Z varies depending on the kind of dive and the dive phase.
1 Terminology / Symbols
1.3 Nitrox information (O2 information)
For dives with compressed air in normal recreational diving, nitrogen is the decisive gas for the decompression calculations. When diving with Nitrox, the risk of oxygen toxicity rises with the increase of the
fraction of oxygen and the increase of depth and can limit dive time and the maximum depth. Smart Z
includes this in the calculations and displays the necessary information:
"O2% MIX"
Fraction of oxygen: The fraction of oxygen in the Nitrox mixture can be set
between 21% (normal compressed air) and 100% in 1% increments. Your
selected mix will be the basis for all calculations.
ppO2 max.
Maximum allowed partial pressure of oxygen: the higher the fraction of oxygen in the mixture, the shallower the dive depth at which this value of the
partial pressure of oxygen is reached. The depth at which ppO2 max. is reached
is called Maximum Operating Depth (MOD). Default setting is 1.4 bar, but it can
be set by means of SmartTRAK between 1.0 and 1.95 bar. When you enter the
settings for the gas mixture, Smart Z will display the ppO2 max. limit setting and
the corresponding MOD. Smart Z warns the diver audibly and visually once the
depth is reached at which the ppO2 reaches the maximum allowed value.
• The partial pressure limit set by means of SmartTRAK can be reduced manually
at Smart Z (->18, setting the gas mixture).
• The CNS O2% value/alarm is not influenced by the selected ppO2max. setting.
"CNS O2"
WARNING
16
Oxygen toxicity: With the increased
percentage of oxygen, the oxygen
in the tissues (especially in the central nervous system (CNS)) becomes
important. If the partial pressure of
oxygen rises above 0.5 bar, the CNS
O2 value increases, if the partial pressure of oxygen is below 0.5 bar, the
CNS O2 value decreases. The closer
the CNS O2 value is to 100%, the
closer the limit where symptoms can
occur. See page 21.
ppO2
0,21 bar
CNS O2%
decreases
0,5 bar
CNS O2%
increases
Nitrox diving may only be attempted by experienced divers after proper training
from an internationally recognized agency.
UWATEC® Smart dive computers
2 Attention messages and alarms
III
The audible attention messages (but not the alarms) can be selectively
switched off with SmartTRAK.
2.2 Alarms
WARNING
Serious injury or death may result from failing to
immediately respond to alarms given by Smart Z.
2.1 Attention messages
Attention messages are communicated to the
diver visually by symbols, letters or flashing figures. In addition, two short audible sequences can
be heard (in an interval of 4 seconds) in two different frequencies under water.
4 sec
Alarms are given to the diver visually by flashing
symbols, letters or figures. In addition, an audible
sequence in one frequency can be heard during
the whole duration of the alarm.
(can be switched off)
(can not be switched off)
Attention messages come up in the following
situations (more information can be found on the
listed pages):
Page
An alarm occurs in the following situations (more
information can be found on the listed pages):
• Maximum Operating Depth / max ppO2
is reached
20
• Set maximum depth is reached
19
• Oxygen toxicity reaches 75%
21
• No-stop time = 2 minutes
22
• Prohibited altitude* (surface mode)
25
• Entering decompression when diving with L0 23
• Remaining Bottom Time < 3 minutes
22
• Tank pressure has reached set warning level 21
• Increased workload
21
•
•
•
•
Diving with microbubble levels (L1-L5):
•
•
•
•
MB no-stop time = 0
MB level stop ignored
MB level reduced
Entering decompression when diving
with MB level L1-L5
*without audible attention beep
UWATEC® Smart dive computers
Page
Oxygen toxicity reaches 100%
Ignored decompression
Remaining Bottom Time = 0
Exceeding the prescribed ascent rate
(Particular scale of beeps, ->20)
• Low battery alarm**
21
23
22
20
see below
Low battery alarm Smart Z**
The service symbol appears if the battery capacity
reaches 0%.
Take the unit to your
authorised SCUBAPRO
UWATEC retailer.
30
31
31
31
Transmitter battery low: **
"bAt" flashing and alternating with the display of
the tank pressure.
Replace the battery in
the transmitter ->36.
**without audible alarm
17
English
Smart Z draws the diver’s attention to certain situations and warns the diver of unsafe diving practices.
Attention messages and alarms are always visual and audible under water, only visual at the surface except
the decompression alarm.
3 Preparation for the dive
3.1 Setting the gas mixture and MOD
Before every dive and after changing the tank, make sure that the settings
for the gas mixture correspond with the current mixture used. An incorrect
setting causes Smart Z to miscalculate this particular dive. If the fraction of
oxygen is set too low this can lead to oxygen poisoning without warning. If
the value is set too high decompression sickness may occur. Inaccuracies in
the calculations are carried over to repetitive dives.
WARNING
To set the gas mixture, Smart Z must be in user mode.
…
1. Bridge contacts B and + or B and – until the symbol for the setting of the
O2 mixture appears.
…
2. Confirm that you wish to change the displayed oxygen fraction by bridging
B and E.
3. Change the oxygen fraction in increments of 1% by bridging B and + or
B and –. Smart Z will display the current fraction of oxygen, the maximum
partial pressure limit, ppO2 max (as pre-set by means of SmartTRAK) and
the MOD.
+ –
%
4. Confirm the selected percentage with B and E.
O2% mix
PpO2max.
Max. Operating
Depth MOD
+ –
%
ppO2max.
5. By bridging B and + or B and – you can change the
MOD for the chosen fraction of oxygen. Smart Z will
now display the corresponding partial pressure limit
(ppO2 max) for the new MOD.
6. Confirm your MOD settings with B and E.
• Without confirmation the display will disappear after 3 minutes and your entries will not be
accepted.
• The time to reset the O2 % mix to air can be set with SmartTRAK between 1 and 48 hours
or to "no reset" (default).
3.2
Setting the MB level See chapter V, ->28
3.3 Preparation for the dive and function check
The following descriptions of the preparation are based on the assumption that the transmitter has been
correctly mounted at the HP outlet of the regulators (->12) and successfully paired with Smart Z (->13).
1. Mount the regulator together with the transmitter on the tank
WARNING
NO
NO
CNS O2%
DECO STOP
LEVELSTOP
NO STOP
%
18
2. If present, check the reserve valve of your tank, the reserve valve must be
open.
3. Switch on Smart Z (B-E) and check the test display: Are all elements of
the display activated? Do not use Smart Z if the display does not show all
elements.
4. Open the valve (transmitter will switch on automatically) and check the tank
pressure (after approx. 10 seconds). If the pressure is insufficient, change the
tank.
5. Check the connections and instruments for leaks. Never dive with leaky
equipment!
UWATEC® Smart dive computers
4 Functions during the dive
4.2 Dive time
Dive time
NO STOP
The whole time spent below a depth of 0.8m (3 feet) is displayed as dive time
in minutes. The time above 0.8m (3 feet) is counted as dive time only if the
diver descends again below 0.8m (3 feet) within 5 minutes.
While the dive time is running, the colons on the right of the figures are
flashing in one second intervals. Maximum dive time displayed is 199 minutes.
If a dive lasts longer than 199 minutes the dive time display starts
again at 0 minutes.
4.3 Current depth
Current depth is given in 10 cm increments (1 foot). At a diving
depth of less than 0.8 m (3 ft) the display shows "– – –".
Depth measurement is based on freshwater. Therefore,
Smart Z shows a slightly greater depth when diving in
salt water, depending on the salinity of the water. No
calculation however is affected.
NO STOP
%
%
Current depth
4.4 Maximum depth
CNS O2%
NO STOP
Maximum depth
Maximum depth is only displayed if it exceeds the current depth by more than
1 m (3 feet) (maximum indicator function).
4 sec
CNS O2%
NO STOP
Ascent arrow
WARNING
Set maximum depth reached
If the maximum depth set with SmartTRAK has
been reached (default 40m/130 feet), the current
depth will flash and the ascent arrow will be
displayed.
Ascend until the ascent arrow disappears.
4.5 Temperature
Smart Z permanently displays the temperature, under water and on the surface as long as the computer is turned on.
Temperature
NO STOP
4.6 Ascent rate
NO STOP
Ascent rate
UWATEC® Smart dive computers
Optimal ascent rate varies depending on depth between 7 and 20 m/min (23
and 67 ft/min). It is displayed as a percent of the reference variable ascent
rate. If the ascent rate is greater than 100% of the set value, the black arrow
"SLOW" appears. If the ascent rate exceeds 140%, the arrow starts flashing.
Smart Z provides an audible alarm if the ascent rate is 110% or greater. The
intensity of the alarm increases in direct proportion to the degree that the
prescribed ascent rate is exceeded.
19
English
III
4.1 Immersion
After immersion, starting at a depth of about 0.8 m (3 ft), all diving functions are monitored, i.e. depth and
dive time displayed, maximum depth stored, saturation of tissues calculated, no-stop time or decompression prognosis determined, ascent rate controlled and displayed and the correctness of the decompression
procedure supervised. In addition, Smart Z also shows the tank pressure and about 2 minutes into the dive
the Remaining Bottom Time (RBT) is displayed.
4 Functions during the dive
WARNING
The prescribed ascent rate must be observed at all times! Exceeding the
prescribed ascent rate can lead to microbubbles in the arterial circulation
which can lead to serious injury or death due to decompression sickness.
• In case of an improper ascent Smart Z may require a decompression stop even
within the no-stop phase because of the danger of microbubble formation.
• The decompression duration necessary for the prevention of microbubbles can
increase massively if the ascent rate is exceeded.
• From great depth a slow ascent may cause heightened saturation of tissues and
an extension of both decompression duration and total ascent time.
At shallow depth, a slow ascent may shorten the decompression duration.
• Display of the ascent rate has the priority over "CNS O2".
WARNING
Ascent rate
Visual
alarm
%
S
L
O
W
%
S
L
O
W
%
S
L
O
W
SPEED
SPEED
SPEED
Audible alarm
S
L
O
W
%
SPEED
Reduce ascent rate
Excessive ascent rates for longer periods are entered in the logbook.
The following ascent rates correspond to the 100% value in Smart Z.
depth (m)
<6
<12
<18
<23
<27
<31
<35
<39
<44
<50
>50
7
8
9
10
11
13
15
17
18
19
20
depth (ft)
<20
<40
<60
<75
<88
<101
<115
<128
<144
<164
>164
speed (ft/min)
23
26
29
33
36
43
49
56
59
62
66
speed (m/min)
4.7 Partial pressure of oxygen (ppO2 max) / Maximum Operating Depth (MOD)
The maximum partial pressure of oxygen ppO2 max (default 1.4 bar) determines
4 sec
the Maximum Operating Depth (MOD). Diving deeper than the MOD will expose
the diver to oxygen partial pressures higher than the set maximum level.
The MOD and consequently the ppO2 max can be reduced manually at Smart Z
(->18, setting the gas mixture, point 5).
In addition the maximum allowed ppO2 can be set by means of SmartTRAK
%
between 1.0 to 1.95 bar.
CNS O2%
NO STOP
WARNING
The MOD is a function of ppO2 max and the mixture used. If during the dive the
MOD is reached or exceeded Smart Z sends an audible attention message,
the ascent arrow appears and the current depth display starts flashing.
Ascend to a shallower depth in order to diminish the danger of oxygen poisoning.
WARNING
20
• The MOD should not be exceeded. Disregarding the warning can lead to
oxygen poisoning.
• ppO2 max should not be set higher than 1.6 bar.
UWATEC® Smart dive computers
III
4 Functions during the dive
4.8 Oxygen toxicity (CNS O2%)
Smart Z calculates oxygen toxicity from depth values, time and the gas mixture
and displays it in the location of the ascent rate. The toxicity is expressed in 1%
increments of a maximum tolerated value (O2 clock). The symbol "CNS O2" is
displayed together with the percentage.
%
Oxygen toxicity
An audible attention signal goes off if oxygen tox4 sec
WARNING icity reaches 75%. The symbol "CNS O2" flashes
and the ascent arrow appears.
Ascend to shallower depth to decrease oxygen
loading.
CNS O2%
CNS O2%
NO STOP
%
WARNING
CNS O2%
NO STOP
%
When oxygen toxicity reaches 100%, an audible
alarm goes off every 4 seconds. "CNS O2", the
precentage value and the ascent arrow flash.
Danger of oxygen toxicity!
Start ascent at once.
• During an ascent and if the CNS O2% value does not increase anymore (due to
a lower partial pressure of oxygen), the audible warning is suppressed.
• During the ascent, the display of the oxygen toxicity is replaced by the ascent
rate. If the ascent is stopped, the display changes back to the indication of the
CNS O2% value.
• Smart Z will display CNS O2% values exceeding 199 % with 199 %.
4.9 Tank pressure
4 sec
The tank pressure is also used for the calculation of
the remaining bottom time (RBT) and the workload.
%
WARNING
%
4 sec
4 sec
%
Transmitter warning
%
WARNING
WARNING
UWATEC® Smart dive computers
In case of increased workload, Smart Z displays
a lung symbol and an audible alarm goes off.
(The sensitivity of workload can be changed with
SmartTRAK).
In order to prevent additional saturation, reduce
exertion, relax and breathe more slowly.
If Smart Z receives no data for 30 seconds,
an audible alarm goes off and the transmitter
warning appears.
If Smart Z does not receive pressure data for another 40 seconds, it will activate another audible alarm. RBT and transmitter warning will no longer be
displayed. Instead of the tank pressure value Smart Z will display "- - -".
Check the position of transmitter and Smart Z. Start ascending at once.
Smart Z will switch back to its normal display as soon as new data is received.
WARNING
If tank pressure
<14 bar/200psi
When the tank pressure reaches the set warning
pressure (SmartTRAK) an audible alarm goes off
and the tank symbol is shown. Default value of
warning pressure: 100 bar (1450 psi)
Do not dive any deeper. Start to ascend soon.
If the tank pressure is lower than 14bar/200psi the
transmitter switches off and Smart Z will display
"---".
Do not let the tank pressure drop below 14bar /
200psi.
21
English
NO STOP
4 Functions during the dive
4.10 Remaining Bottom Time (RBT)
RBT is the time left at the current depth until the point of time when the ascent
must be started. The RBT is calculated on the basis of the current tank pressure,
breathing rate, the temperature, and the dive data so far recorded. The RBT is
based on the assumption that the tank pressure should amount to the set pressure (default 40 bar/600 psi) at the end of the dive. Alterations can be made with
SmartTRAK. A graphic representation of RBT is on page 15.
WARNING
Never allow the RBT to go below three minutes. If the RBT goes below three
minutes there is a danger of insufficient supply of gas mixture for the ascent
as well as an increased risk of decompression sickness, and serious injury or
death may result!
Correct calculation of RBT when using a reserve or “J“ type valve is possible
only if the reserve function of the valve is in the open (down) position during
the dive.
4 sec
WARNING
If the RBT drops below three minutes, an audible
attention signal is activated, the ascent arrow is
displayed and the tank icon start flashing.
Start ascent immediately.
%
RBT < 3 minutes
WARNING
%
RBT = 0 minutes
The RBT value should never reach "0:". With
RBT=0 the remaining tank reserve may not be
sufficient for the ascent.
When the last minute has passed (RBT=0) an
audible alarm is activated every 4 seconds. The
RBT, the ascent arrow and the tank icon start flashing. The audible alarm on exceeding the RBT is
suppressed at depths less than 6.5 m (21 ft) if
Smart Z is in the no-stop phase.
Start ascent at once.
4.11 Decompression information
No-stop time is displayed if no decompression stops are necessary. The arrow
decompression stops are necessary. The figures indicate no-stop time in minutes.
NO STOP
No-stop time
NO STOP
is visible if no
• No-stop display "99:" means remaining time of 99 minutes or
more.
• No-stop time is calculated on line and influenced by the current
workload and current water temperature
WARNING
4 sec
CNS O2%
If no-stop time drops below 3 minutes, an audible
attention signal is activated and the no-stop value
begins to flash.
If no-stop time is less than 1 minute, the no-stop
display shows the flashing value "0".
In order to prevent a decompression dive, ascend
slowly until the no-stop time is 5 minutes or more.
NO STOP
WARNING
22
Dives that require decompression stops are not
recommended.
UWATEC® Smart dive computers
CNS O2%
DECO STOP
Decompression
stop depth
Decompression
time
On entering the decompression phase, the arrow NO STOP
disappears, the
arrow DECOSTOP appears and an attention beep goes off. Right beside the
arrow, the deepest decompression stage in metres (feet) is displayed. Next
to the decompression stop depth, the decompression stop duration of the
displayed stage appears in minutes. The display "3m 7:" means that a decompression stop of 7 minutes at a depth of 3m has to be made.
When a decompression stop has been finished, the next higher decompression
stop is displayed. When all decompression stops have been made, the arrow
NO STOP
DECOSTOP extinguishes and the arrow
reappears. The indication of
time on the lower right shows the no-stop time again.
Deco stop depths deeper than 27m (90 ft) are displayed as "– – : – – ".
The decompression alarm is activated if the decompression stop is ignored. The arrow DECOSTOP , the
decompression stop duration and decompression
stop depth begin to flash and an audible alarm
goes off.
Due to the formation of microbubbles, decompression can increase massively
if a decompression stop is ignored. When the surface is reached during the
decompression alarm, the arrow DECOSTOP , the decompression stop duration and decompression stop depth continue flashing, in order to point to
the risk of a decompression accident. The SOS mode is activated 3 minutes
after the dive if corrective action is not taken (->11).
If the total (cumulative) duration of the decompression alarm is longer than
one minute, it is entered in the logbook.
WARNING
CNS O2%
DECO STOP
Ignored decompression
alarm
Descend to the prescribed decompression stop depth immediately!
Total time of ascent
CNS O2%
DECO STOP
Total time of ascent
As soon as decompression stops are necessary Smart Z shows the total time of
ascent. This includes the ascent time from the current depth to the surface and
all decompression stop obligations.
The total time of ascent is calculated on the basis of the prescribed ascent rate and a normal workload. Total time of ascent can be
subject to change if the ascent rate is not ideal (100%) or if Smart Z
detects a higher workload.
Ascent time greater than 99 minutes is displayed as "– –".
WARNING
UWATEC® Smart dive computers
On all dives with Smart Z, make a safety stop for at
least three minutes at a depth of 5 m (15 feet).
23
English
III
4 Functions during the dive
Decompression values
5 Functions at the surface
5.1 End of a dive
After reaching the surface (<0.8 m/3 ft) Smart Z remains in dive mode for 5
minutes. The delay allows for surfacing for a short period for orientation.
After 5 minutes the dive is closed and it is entered into the logbook.
%
WARNING
For the calculations of the desaturation and no-fly time it is assumed that the
diver breathes air while on the surface.
5.2 Desaturation time
NO
CNS O2%
Oxygen toxicity
DESAT , desaturation time in hours and
After the dive has been closed
minutes and, if available, oxygen toxicity is displayed. Desaturation time is
determined either by oxygen toxicity, nitrogen saturation or the regression of
microbubbles, depending on which requires the longer time. Oxygen toxicity
("CNS O2") is displayed and adjusted until the value becomes 0%.
Desaturation time is indicated until the next dive or until it reaches zero.
The display is switched off to save energy three minutes after the last manipulation is made. The calculations are nevertheless continued in the background.
Desaturation time
5.3 No-fly time
No-fly time
Do not fly icon
The "no-fly time" is indicated beside the icon "do not fly". "No-fly time" is the
time in hours that should pass before a flight and is displayed and adjusted until
the value becomes 0 hours.
NO
CNS O2%
WARNING
Flying while Smart Z displays "do not fly" may
lead to serious injury or death from decompression
sickness.
5.4 Microbubble warning
Through repetitive dives microbubbles accumulate in the lungs if the surface
interval is not long enough. Ignoring decompression stops or ascending at an
excessive rate can also lead to microbubbles in tissues. In order to reduce the
risk of decompression sickness for repetitive dives, the surface interval should
be planned long enough. If Smart Z calculates that the formation of microbubbles occurs during the surface interval, it will advise a diver to extend the
surface interval via the microbubble warning. The duration of the microbubble
Microbubble
warning is visible by entering the dive planner -> 33.
warning
NO
NO
CNS O2%
Desaturation time
WARNING
If the "microbubble warning (NO DIVE)" is visible
during the surface interval, the diver should not
undertake another dive.
If the dive is made in spite of the microbubble warning, the diver must cope
with a clearly shorter no-stop time or an extension of decompression. Also,
the duration of the microbubble warning at the end of the dive can increase
considerably.
24
UWATEC® Smart dive computers
6 Diving in mountain lakes
Altitude range 1
Desaturation time
Adaptation time
Altitude ranges
III
Smart Z measures the atmospheric pressure every 60 seconds even while the
display is switched off. If the computer detects a sufficient increase in altitude,
it switches on automatically and indicates the new altitude range (1-4) and
the desaturation time. Desaturation time indicated at this moment refers to
adaptation time at this altitude. If the dive starts within this adaptation time,
Smart Z treats it as a repetitive dive, since the body is offgassing.
Altitude is divided into five ranges, which are influenced by barometric pressure.
That is why the defined altitude ranges overlap on their fringes. If a mountain
lake is reached, the altitude range is indicated at the surface, in the logbook
and in the dive planner by a stylised mountain filled with one or more of
4 segments representing the 4 ranges. Sea level to an altitude of approximately
Switching
1000m (3300 feet) is not indicated. In the following
at approx.
diagram, you can see the
No deco data
610 mbar
approximate breakdown of
gauge mode
4000 m
8.85 psi
13120 ft
the altitude ranges:
3000 m
9840 ft
1
2
3
4
725 mbar
10.51 psi
2000 m
6560 ft
815 mbar
11.82 psi
1000 m
3280 ft
905 mbar
13.12 psi
0m
6.2 Prohibited altitude
WARNING
Ascent to altitude range 3
and 4 prohibited.
Max. allowed altitude:
2650 m (8694 ft).
Max. altitude:
850 m
2790 ft
Smart Z shows via flashing altitude segments while
at the surface to which altitude the diver may not
rise.
1650 m
5413 ft
2650 m
8694 ft
4000 m
13120 ft
The ascent prohibition can also be displayed together with an
altitude range:
Example: You are at 1200 m (3937 ft) (altitude
range 1) and you may ascend to range 2 only
(2650 m / 8694 feet). You may not rise to the
altitude range 3 or 4.
6.3 Decompression dives in mountain lakes
In order to assure optimal decompression even at higher altitudes, the 3m (10
ft) decompression stage is divided into a 4 m (13 ft) stage and a 2 m (7 ft) stage
in altitude ranges 1, 2 and 3. The prescribed decompression stop depths are, in
sequence, 2m / 4m / 6m / 9m… (7 ft / 13 ft / 20 ft / 30 ft…).
%
Dive at altitude range 4:
• no deco data
• no RBT
UWATEC® Smart dive computers
If atmospheric pressure is below 620 mbar (8.99 psi) (altitude higher than
4100 m / 13450 ft above sea level), no decompression data is calculated and
displayed (automatic gauge mode). In addition RBT and the dive planner are
not available anymore. The oxygen toxicity and the tank pressure are still
indicated.
25
English
6.1 Altitude ranges
IV Gauge mode
WARNING
In gauge mode ALL audible and visual alarms and attention messages are
turned off. This includes ascent speed, low tank pressure and interrupted
signal from transmitter.
In gauge mode Smart Z will display depth, dive time and tank pressure, the maximum depth is stored,
ascent rate and tank pressure are monitored. Gauge mode does not support the calculation of no-stop
time or the supervision of decompression. Supervision of ppO2 max and CNS O2% will also be switched
off. Smart Z will display no information about RBT or microbubble development. The settings for gas
mixtures, MOD and microbubble level cannot be set and the dive planner cannot be selected.
WARNING
• Dives in gauge mode are performed at your own risk!
• After diving in gauge mode you should wait for at least 48 hours before
using a decompression computer.
Switching the gauge mode on and off
Gauge mode can be switched on and off at the surface, if no desaturation time
is being prescribed.
After diving in gauge mode, Smart Z can not be used as dive computer for
48 hours.
Procedure:
1. Bridge contacts B and + or B and – until the gauge symbol and "on" or
"off" are displayed.
2. Confirm with B and E that you wish to activate or deactivate the gauge
mode. The gauge symbol starts flashing.
3. By bridging contacts B and + or B and – the gauge mode is switched on and
off.
4. Confirm your settings with B and E.
Without confirmation the display will disappear after 3 minutes and your
entries will not be accepted.
Diving in gauge mode
The following information is displayed in gauge mode:
Temperature
Current depth
Dive time
Gauge icon
Maximum depth
Tank pressure
26
UWATEC® Smart dive computers
IV
IV Gauge mode
After diving in gauge mode
Smart Z shows the remaining time span during which it cannot be used in
computer mode. Once the waiting period is over, the gauge mode can be
switched off manually ->26.
NO
English
The no-fly time after diving in gauge mode is 48 hours.
Desaturation time will not be displayed.
UWATEC® Smart dive computers
27
V Diving with microbubble levels (MB)
The following chapter deals with the characteristics of diving with microbubble levels (MB levels).
For general information about displays and features of diving with Smart Z see chapter III.
Microbubbles are tiny bubbles that can build up inside a diver's body during any dive and normally dissipate
naturally during an ascent and on the surface after a dive. Dives within no-stop time and observance of decompression stops do not prevent the formation of microbubbles in the venous blood circulation.
Dangerous microbubbles are those migrating into the arterial circulation. The reasons for the migration
from the venous blood circulation to the arterial circulation can be a great many microbubbles collecting in the
lungs. UWATEC has equipped Smart dive computers with a new technology to protect from microbubbles.
The diver chooses – according to his/her needs – an MB level and influences through it the level of
protection from microbubbles. Diving with MB levels requires additional ascent stops (level stops), the ascent is
slowed down and the body gets more time to desaturate. This works contrary to the formation of the microbubbles and increases the safety.
Smart Z features 6 microbubble levels (L0-L5). Level L0 corresponds to UWATEC's well-known
decompression model ZH-L8 ADT and does not require level stops due to microbubble formation. Levels L1 to
L5 offer additional protection from microbubble formation with level L5 offering the highest protection.
Similar to the display of information during decompression dives or dives within no-stop time, Smart Z
displays depth and duration of the first level stop as well as the total time of ascent as soon as the MB
no-stop time has run out. As the MB no-stop time is shorter than the ordinary no-stop time a diver will be
required to carry out a stop (level stop) sooner than a diver using level L0.
If a diver ignores a required level stop, Smart Z will change over to a lower MB level and the dive can not be
completed with the initially chosen MB level. E.g. If a diver sets level L4 on Smart Z prior to the dive and during
the dive ignores the stops recommended Smart Z will automatically adjust the setting to level L3 or lower.
1 Comparison of dives with MB level L0 and MB level L5
When two Smart Zs are used simultaneously, one unit is set for example to MB level L5, the other to L0,
the no-stop time will be shortened and level stops will be required before the diver has the obligation of
a decompression stop. These additional level stops help dissipate the microbubbles.
Depth
Microbubble accumulation
at the end of dive
Time
L0
3m/10ft
6m/20ft
L5
9m/30ft
12m/40ft
Stop depth
15m/50ft
Microbubble
level
ft
L0
DECO STOP
NO STOP
L5
NO STOP
LEVELSTOP
m
NO STOP
NO STOP
m
ft
LEVELSTOP
m
ft
DECO
LEVELSTOP
m
Decompression values
Level stop values
ft
Decompression obligation, ->31
28
UWATEC® Smart dive computers
2 Terminology
V
This chapter will exclusively deal with terminology and display features used while diving with MB levels.
All other features are described in chapter III (page 15).
MB no-stop phase
Dive phase during which surfacing is
possible without MB level stop.
Depth
MB level
An MB level
between L1 and
L5 was chosen.
CNS O2%
English
2.1 Display during microbubble (MB) no-stop phase
Level stop phase
Time
Dive time
NO STOP
MB no-stop time
Remaining time at a
respective depth allowing
ascent without level stop.
21min
MB no-stop time
Current depth
Maximum depth
29.9 m
2.2 Display during level stop phase
Total ascent time (14 min)
Total ascent time
including level stops
Depth
Time
CNS O2%
6m/20ft
9m/30ft
LEVELSTOP
Lowest level
stop depth
3 min
Level stop duration
Level stop depth
The deepest level
stop is displayed.
Level stop duration
The duration of a level
stop at a given level
stop depth is displayed.
3m/10ft
35.7m
UWATEC® Smart dive computers
MB no-stop phase
Level stop phase
To complete the dive without being
reduced to a lower MB level all
requested level stops must be
observed.
29
3 Preparation for a dive with microbubble levels (MB levels)
3.1 Setting the MB level
To change the MB level Smart Z must be in user mode.
1. Bridge contacts B and + or B and – until the symbol for MB levels appears.
2. Confirm that you wish to change the displayed MB level by bridging B and E.
+ –
3. Change MB level by bridging contacts B and + or B and – .
4. Confirm with B and E the selected MB level.
Without confirmation the display will disappear after 3 minutes and your
entries will not be accepted.
Smart Z will display the
symbol to confirm that an MB level beyond L0
(L1-L5) has been chosen. If however a level stop is ignored, the new MB level
is permanently shown (->31).
MB levels have an influence on the dive planner.
4 Functions during the dive with microbubble levels
4.1 Level stop information
Microbubble (MB) no-stop time
While diving with MB levels L1 to L5 Smart Z will display the MB no-stop time instead of the ordinary nostop time. Within the MB no-stop time no level stops are required.
The arrow NO STOP and the MB level symbol
are visible. The remaining MB no-stop time is shown
in minutes.
• Information and alarms for MB no-stop time and ordinary nostop time are the same (->22).
• Regardless of the MB level, we generally recommend to perform
a slow ascent during the last few metres / feet.
NO STOP
MB no-stop time
Level stop
Level stop icon
CNS O2%
LEVELSTOP
On entering the level stop phase, the arrow NO STOP disappears and the arrow
LEVELSTOP
appears. The LEVELSTOP arrow flashes for 8 seconds and an audible
attention beep goes off. To complete the dive without being reduced to a lower
MB level, all requested level stops must be observed.
To the right of the LEVELSTOP arrow, the deepest level stop is displayed in
metres/feet. The display "3m 2:" ("10ft 2:") means that a level stop of 2 minutes
at a depth of 3 metres (10ft) has to be observed.
When a level stop obligation is finished, the next higher level stop – if present
– is displayed. When all level stops have been observed, the arrow LEVELSTOP
extinguishes and the arrow NO STOP reappears. The indication of time shows
the MB no-stop time again.
Deepest level
stop depth
Level stop duration
Total ascent time
30
UWATEC® Smart dive computers
4 sec
WARNING
CNS O2%
LEVELSTOP
Level stop ignored
WARNING
Microbubble level reduced
4 sec
CNS O2%
LEVELSTOP
V
The attention message "Level stop ignored" is
activated if the requested level stop is not observed.
An attention beep* goes off, the arrow LEVELSTOP ,
the depth and duration of the ignored level stop
begin flashing.
To complete the dive without being reduced to a
lower MB level, you must descend to the prescribed
depth immediately!
The warning "microbubble level reduced" is
activated if the diver ascends more than 1.5m (5ft)
above the required level stop. Smart Z reduces the
microbubble level, an attention beep* goes off and
for the rest of the dive the new MB level is indicated
in the position of O2 % mix. The level stop for the
reduced MB level is now displayed.
To complete the dive without being further reduced
to an even lower MB level the new level stop must
be observed.
New microbubble level
* Attention beeps can be suppressed via SmartTRAK.
4.2 Total time of ascent
Smart Z displays the level stop information and the total time of ascent. This
includes the time of ascent as well as all level stops.
CNS O2%
The total time of ascent is calculated on the basis of the prescribed ascent rate and a normal workload. Total time of ascent can be
subject to change if the ascent rate is not ideal (100%) or if Smart Z
detects a higher workload.
LEVELSTOP
Total ascent time
4.3 Decompression obligation
Decompression obligation
WARNING
CNS O2%
DECO
LEVELSTOP
Level stop information
4 sec
CNS O2%
DECO
LEVELSTOP
UWATEC® Smart dive computers
Avoid decompression dives when diving with MB
levels.
Smart Z calculates and displays level stops to reduce microbubble formation,
but it also calculates the diver's decompression data. If decompression stops
become obligatory, the DECO symbol will be displayed. The total ascent time will
now also contain a decompression stop.
WARNING
You are close to entering decompression: At the
beginning of a decompression phase an attention
beep goes off and the DECO symbol flashes for 8
seconds.
In order to prevent a dive with long decompression
stops it is recommended that you ascend a few
metres/feet on seeing this message.
31
English
4 Functions during the dive with microbubble levels
4 Functions during the dive with microbubble levels
4.4 Level stop and deco stop
Depth
Time
3m/10ft
Microbubble
level
L5
L0
Deco stop
duration
Level stop duration
L0
L5
Since level stops are more restrictive
than decompression stops, when all
decompression obligations have been
observed the display changes from
DECOSTOP
LEVELSTOP to LEVELSTOP only.
LEVELSTOP
LEVELSTOP
ft
decompression stop
depth = level stop depth
When the level stop depth equals the
depth of the first obligatory decompression stop and if you are within 1.5m/5feet
of the stop depth itself, Smart Z shows
DECOSTOP
and LEVELSTOP . The indicated
duration refers to level stop duration.
ft
Level stop duration
5 Complete a dive with MB levels
A dive with MB levels is completed the same way as a dive without MB levels
(L0) (-> 24), save for the following exceptions:
If the MB level has been reduced during the dive, Smart Z will display a flashing
MB level symbol and the current MB level for five minutes after reaching the
surface. The dive is then completed and Smart Z changes to user mode with
the MB level switching back to the original MB setting.
Repetitive dives and microbubble levels: If during a dive a level stop is being
ignored and the diver starts another descent shortly afterwards, Smart Z might
immediately request level stops. To complete the dive with the initially set MB
level all level stops must be observed.
32
UWATEC® Smart dive computers
VI Dive planner
VI
Basis of the planning:
WARNING
•
•
•
•
•
•
selected fraction of oxygen and MOD
selected microbubble level
water temperature of the most recent dive
altitude range (if any)
status of saturation at the time the dive planner is selected
assuming a normal workload of the diver and observance of the prescribed
ascent rates
If two or more divers using computers are planning a dive, planning for all
divers has to be based on the dive computer showing the shortest no-stop
times. Failure to do this may lead to serious injury or death from decompression sickness.
1 Planning a no-stop dive
With the contacts B and + or B and – you can select the dive planner at the surface.
(The dive planner cannot be selected in gauge mode)
The microbubble warning and
Microbubble warning its duration are displayed if
Smart Z detects an increased
(Do Not Dive)
risk due to the accumulation
Duration of the
of microbubbles.
warning
NO
NO
if
NO
Dive planner icon
Enter the dive planner with B and E.
Enter the
dive planner
The input window for the time interval is displayed
if there was a remaining desaturation (DESAT) before
the Dive Planner has been selected. This surface
interval between now and the beginning of the
dive can be changed with the contacts B and + or B
and – in steps of 15 minutes.
if rep. dive
Input of the
surface interval
Icon for microbubble
level L1-L5
CNS O2%
NO STOP
%
No-stop time or
MB no-stop time
+
–
If a microbubble warning (no dive) and its duration has been displayed, Smart Z proposes this time
– rounded up to the next 15 minutes – as surface
interval. If the proposed interval is shortened, the
microbubble warning appears.
NO
With B and E you confirm the displayed interval (if applicable), then Smart Z
starts scrolling the no-stop times. The no-stop times are displayed in 3 metre
increments (10 ft) and are displayed for every increment for about 2 seconds.
The process starts at 3 metres (10 ft).
If a microbubble level has been selected (L1-L5), the MB no-stop time is
shown.
No-stop times will be displayed as long as the selected maximum operating
depth (MOD) is not exceeded.
On page 24 you will find further information and safety considerations
regarding the microbubble warning.
NO
UWATEC® Smart dive computers
33
English
Smart Z has a dive planner which allows the planning of no-stop dives as well as decompression dives
with freely determinable surface intervals.
VI Dive planner
2 Planning a decompression dive
1. Activate the dive planner for a no-stop dive ->33.
2. Wait until the desired depth appears, then switch into decompression planning by bridging contacts B and E. Smart Z shows the bottom time (no-stop
time + 1 minute) and the appropriate decompression information or level
stop data respectively.
3. "Add" asks that you set the bottom time. This is done with contacts B and +,
B and – respectively. As soon as the contacts are no longer bridged, Smart Z
calculates the decompression information or level stop data respectively for
this set bottom time.
NO STOP
%
CNS O2%
DECO STOP
%
Bottom Time +
–
If you wish to plan a decompression dive at another depth, switch from
decompression planning to no-stop planning by means of B and E. Smart Z
again shows the scrolling no-stop times. Now you can switch between no-stop
planning and decompression planning at will with contacts B and E.
If the calculated decompression information and the total ascent time exceed
99 minutes, or the CNS O2% value exceeds 199%, the said values will start
flashing on the display or "– –" values appear and the decompression calculation
is suspended until the bottom time has been reduced accordingly. CNS O2%
values higher than 199% will be displayed as 199 %.
3 Leaving the dive planner
With the contacts B and E (1-2 sec) you can exit the Dive Planner. This also
occurs after three minutes without operation.
34
UWATEC® Smart dive computers
VII Logbook
VII
English
1 Survey
A dive is entered in the logbook if the dive time is longer than 2 minutes. Smart Z records the profiles of
about 100 hours of diving. This information can be transferred to a PC with the standard infrared interface (IrDA) and the Windows® software SmartTRAK. Up to 99 dives can be displayed directly on the dive
computer.
The following information of the dive is displayed:
Logbook icon Diving in gauge mode
Ignored decompression stop* or
diving in SOS mode
Too fast ascent*
Altitude range (if any)
Maximum depth
CNS O2%
DECO
%
Fraction of oxygen
*Alarms during the dive
Lowest temperature
MB level reduced*
Dive time
Dive number
CNS O2 value at the end of the dive
Duration of surface interval
(only with repetitive dives)
Increased workload warning*
dP = differential pressure (gas consumed)
Gas consumed (bar or psi)
Ignored decompression stop*
If a dive is started within adaptation time (after a change of altitude), the
adaptation time is displayed instead of the surface interval.
2 Operation
With the contacts B and + or B and – you can select the logbook. With B and
E you enter the logbook.
If there was a remaining desaturation time (DESAT) before selecting the logbook, the time since the last dive (surface interval) is displayed.
With B and E you get the most recent dive displayed (LOG 1).
CNS O2%
Each bridging of B and + or B and – causes a jump to the next older or more
recent dive. Upon continuous bridging of the contacts all dives are displayed
successively.
%
With the contacts B and E you can exit the logbook.
The logbook closes automatically after 3 minutes without operation.
UWATEC Smart dive computers
®
35
VIII Appendix
1 Technical information
Operating altitude:
with decompression information: sea level up to approx. 4000 m (13120ft);
w/o decompression, w/o RBT information: usable in gauge mode (at any altitude)
120m (395 ft), resolution between 0.8 m and 99.9 m: 0.1 m, >99.9 m: 1m
The resolution in feet is always 1 foot.
Max. displayed depth:
WARNING
• Do not dive deeper than the limits given by the chosen fraction of oxygen
(nitrogen narcosis, oxygen toxicity).
• Never dive deeper than your training qualification (experience) allows you.
• Always observe local dive depth restrictions.
Decompression calculation depth range: 0.8 to 120m (3 to 395 ft)
Maximum environment pressure:
13 bar (189 psi)
Clock:
Quartz timer, display up to 199 minutes.
O2% Mix:
Adjustable between 21%O2 (compressed air) and 100% O2
Operating temperature: -10° to +50°C (14°F to 122°F).
Power supply:
Special battery UWATEC LR07
Life of the battery:
500 to 800 dives, depending on the quantity of dives per year and the use of
the backlight.
Transmitter:
High pressure connection: Maximum working pressure: 300 bar (4350 psi)
Life of the battery:
up to 1000 dives, max. 3 years without use.
Power supply:
User replaceable battery CR2450
2 Maintenance
The tank pressure gauge and the parts of this product used to measure the tank pressure should be serviced
by an authorized SCUBAPRO UWATEC dealer every second year or after 200 dives (whichever comes first).
Aside from that your Smart Z is virtually maintenance free. All you need to do is to rinse it carefully with fresh
water after each use and to have the batteries changed when needed. To avoid possible problems with your
Smart Z, the following recommendations will help assure that it will give you years of trouble free service:
WARNING
WARNING
•
•
•
•
•
Avoid dropping or jarring your Smart Z.
Do not allow your Smart Z to be exposed to direct, intense sunlight.
Rinse your Smart Z thoroughly with fresh water after each dive.
Do not store your Smart Z in a sealed container; make sure there is free ventilation.
If there are problems with operating the contacts, use soapy water to clean
Smart Z and dry it thoroughly. The surface of your Smart Z housing can be
treated with silicone grease. Do not apply grease to the water contacts!
• Do not clean Smart Z with liquids containing solvent (apart from water).
• If the service icon appears, Smart Z must not be used for any further dives.
Take your dive computer to an authorized SCUBAPRO UWATEC dealer.
Take the dive computer to an authorised SCUBAPRO UWATEC dealer in
order to change the batteries. The battery replacement is carried out by a
SCUBAPRO UWATEC subsidiary. Smart Z is checked for its technical integrity
at the same time. Do not attempt to have the batteries changed by anyone
other than an authorised SCUBAPRO UWATEC dealer.
2.1 Replacing the battery of the transmitter
WARNING
It is recommended to have the battery of the transmitter replaced by an
authorized SCUBAPRO UWATEC dealer. The change must be made with
particular care in order to prevent water from seeping in.
The warranty does not cover damages due to an improper replacement of
the battery.
Transmitter battery set (PN 06.201.920): Includes a Type CR 2450 battery and a 26.00 x 2.00 mm
transmitter cap o-ring.
36
UWATEC Smart dive computers
®
VIII
VIII Appendix
Never touch the metal surface of the battery with bare fingers.
The two battery poles must never be short circuited.
Transmitter Battery
CR2450
Transmitter Cap
English
WARNING
HP port o-ring
8.73 x 1.78 mm
Transmitter screws
PT®KA 30 x 16 mm
Transmitter cap o-ring
26.00 x 2.00 mm
Procedure:
To replace the battery you need a Phillips screwdriver and a clean cloth.
WARNING
1.
2.
3.
4.
5.
6.
• A leaking transmitter cap may lead to the destruction of the transmitter by
water seeping in or cause the transmitter to switch off without prior notice.
• Always open the transmitter in a dry and clean environment.
• Only open the transmitter to replace the battery.
Remove the transmitter from the HP outlet of the first stage of the regulator.
Dry the transmitter with a soft towel.
Remove the 3 screws with the Phillips screwdriver.
Remove the transmitter cap carefully.
Remove the transmitter cap o-ring carefully. Do not damage the sealing surfaces.
Remove the battery by holding it on both sides. Do not touch the contacts or electronic
parts.
Protect the environment and dispose the battery properly.
WARNING
If you notice traces of seeping water, damages, or other defects on the
o-ring, do not use the transmitter for further dives. Take it to an authorized
SCUBAPRO UWATEC dealer for check and repair.
7. Always insert a new o-ring when you replace the battery and dispose the old o-ring.
Make sure that the new, lubricated o-ring is in perfect condition, and that o-ring, o-ring groove and
the sealing surfaces of HP outlet and transmitter cap are free of dust and dirt.
If necessary, clean the parts with a soft cloth. Fit the o-ring in the o-ring groove.
WARNING
8. Check the proper polarity of the battery. The transmitter can be damaged
if you do not insert the battery correctly.
Wait for at least 30 seconds. Now insert the new battery, with "+" pointing upwards, into the battery
compartment.
9. After battery replacement the transmitter will perform an automatic test and switch into ready mode
after 60 seconds.
UWATEC Smart dive computers
®
37
VIII Appendix
WARNING
10. The transmitter cap will only fit in one position. Check the proper position
of the guide slots on the electronic support and in the transmitter cap.
Slide the transmitter cap carefully back into its proper position.
11. Do not overtighten the screws! Fasten the transmitter cap with the 3 screws.
12. Mount the transmitter on the HP outlet of the first stage of the regulator and check transmission and
pairing. If you do not receive valid tank pressure data, transmitter and dive computer must be paired
again.
3 Conversion of tank pressure
Tank pressure indicated may differ from the information given by a manometer/pressure gauge. Smart
Z displays pressure always converted to a temperature of 20°C / 68°F, whereas the mechanical pressure
gauge displays the current pressure influenced by temperature.
The figure below allows you to compare the information given by a conventional pressure gauge and by
Smart Z at six different temperatures.
bar psi
260 3770
Display pressure gauge
240 3480
220 3190
200 2900
35o C 95o F
30o C 86o F
20o C
10o C
5o C
0o C
68o F
50o F
41o F
32o F
180 2610
160 2320
140 2030
120 1740
150 160 170 180 190 200 210 220 230 bar
2175 2320 2465 2610 2755 2900 3045 3190 3335 psi
Display Smart Z
4 Warranty
The warranty only covers dive computers which have been bought from an authorised SCUBAPRO
UWATEC retailer.
The warranty is given for a period of two years.
Repairs or replacements during the warranty period do not increase the warranty period.
In order to put forward a warranty claim: send the dive computer together with a dated receipt of the
purchase to your authorised retailer or an authorised servicing point.
UWATEC reserves the right to determine the merits of a warranty claim and to determine whether the
computer will be repaired or replaced.
38
UWATEC Smart dive computers
®
5 FCC
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
6 Index
Active backlight __________________________
Ascent rate ____________________ 15, 17, 19,
Battery alarm ____________________________
Battery capacity, Checking the… ____________
Battery lifetime ___________________________
Beep, Switch off the… ____________________
11
20
17
10
36
17
CNS O2 ____________________15, 16, 17, 21,
Deco data during decompression phase ______
Deco data during no-stop phase ____________
Decompression stop, Ignored… __________ 17,
Depth, current ___________________________
Desaturation time ________________________
Dive ____________________________________
Dive planner _____________________________
Dive time _______________________________
Dive, end of a dive _______________________
Fly, "no-fly time" ______________________ 10,
Gas mixture, Setting… ____________________
Gauge mode ____________________________
Light ___________________________________
Logbook ________________________________
Maintenance ____________________________
Maximum depth ______________________ 19,
Microbubbles ____________________________
Microbubbles, Warning of… ____________ 24,
Mountain lakes, Diving in… ____________ 25,
35
15
15
23
19
24
15
33
19
24
24
18
26
11
35
36
35
28
33
35
UWATEC Smart dive computers
®
Mounting the transmitter to the first stage __ 12
Nitrox
______________________________ 16
No-stop time _____________________ 15, 22, 28
O2% mix, Set up… _______________________ 18
O2 fraction _______________________ 15, 16, 18
O2 partial pressure _________________ 16, 17, 20
O2 partial pressure, maximum _______ 16, 18, 20
O2 toxicity __________________15, 16, 17, 21, 35
Operating Smart Z _____________________ 4, 8, 9
Oxygen…, see "O2…"
PC, transfer to PC (logbook) _____________ 8, 35
ppO2, see O2 partial pressure
Premix, setting the gas mixture _____________ 18
RBT _____________________________ 15, 17, 22
Setting the MOD _________________________ 18
SmartTRAK ___________________ 8, 9, 16, 17, 35
SOS mode_______________________________ 11
Surface interval _______________________ 33, 35
System___________________________________ 8
Tank pressure ___________________________ 21
Technical information _____________________ 36
Transmitter ________________________ 8, 12, 36
Warnings _______________________________ 17
Workload _______________________________ 21
Workload, Increased… ____________________ 21
39
English
VIII
VIII Appendix
Excluded are faults or defects due to:
• excessive wear and tear;
• exterior influences, e.g. transport damage, damage due to bumping and hitting, influences of weather
or other natural phenomena;
• servicing, repairs or the opening of the dive computer by anybody not authorised by the manufacturer.
This especially concerns the change of battery;
• pressure tests which do not take place in water;
• diving accidents;
• improper placement of the transmitter cap.
SCUBAPRO UWATEC Americas
(USA/Canada/Latin America)
1166 Fesler Street
El Cajon, CA 92020 USA
t: +1 619 402 1023
f: +1 619 402 1554
www.scubapro.com
SCUBAPRO UWATEC France
Les Terriers Nord
175 Allée Belle Vue
F-06600 Antibes
t: +33 (0) 4 92 91 30 30
f: +33 (0) 4 92 91 30 31
www.scubapro-uwatec.com
SCUBAPRO UWATEC Asia Pacific
1208 Block A, MP Industrial Center
18 Ka Yip St.
Chai Wan Hong Kong
t: +852 2556 7338
f: +852 2898 9872
www.scubaproasiapacific.com
SCUBAPRO UWATEC Benelux
Avenue des Arts, 10/11 Bte 13
1210 Bruxelles
t: +32 (0) 2 250 37 10
f: +32 (0) 2 250 37 11
www.scubapro-uwatec.com
SCUBAPRO UWATEC Australia
Unit 21, 380 Eastern Valley Way
Chatswood, N.S.W. 2067
t: +61 2 9417 1011
f: +61 2 9417 1044
www.scubapro.com.au
SCUBAPRO UWATEC Deutschland
(Germany / Austria / Scandinavia)
Taucherausrüstungen GmbH
Rheinvogtstraße 17
79713 Bad Säckingen-Wallbach
t: +49 (0) 7761 921050
f: +49 (0) 7761 921051
www.scubapro.de
SCUBAPRO UWATEC Italy
Via G.Latiro 45
I-16039 Sestri Levante (GE)
t: +39 0185 482 321
f: +39 0185 459 122
www.scubapro-uwatec.it
SCUBAPRO UWATEC Japan
4-2 Marina Plaza 5F
Kanazawa-Ku
Yokohama
Japan
t: +81 45 775 2288
f: +81 45 775 4420
www.scubapro.co.jp
SCUBAPRO UWATEC España
Pere IV, nº359, 2º
08020- Barcelona
t: +34 93 303 55 50
f: +34 93 266 45 05
www.scubapro-uwatec.es
SCUBAPRO UWATEC U.K.
Vickers Business Centre
Priestley Road
Basingstoke, Hampshire RG24 9NP
England
t: +44 0 1256 812 636
f: +44 0 1256 812 646
www.scubapro.co.uk
SCUBAPRO UWATEC Switzerland
Oberwilerstrasse 16
CH-8444 Henggart
t: +41 (0) 52 3 16 27 21
f: +41 (0) 52 3 16 28 67
www.scubapro.de
www.uwatec.com
Protect the environment!
When disposing of this
computer, do so in an
environmentally friendly way.
8.05
UWATEC Smart dive computers
®
Quick reference Smart TEC
O2 mix icon (input)
Gauge icon
Logbook icon
Dive planner icon
Microbubble level icon (input / MB level reduced)
Do not fly Icon
Do not dive icon
Microbubble warning
Dive time / No-fly time / SOS duration
Current depth
NO
Service icon
CNS O2%
Ascent obligation
Altitude sections
Too fast ascent
Maximum depth
Temperature
Microbubble level
Maximum Operating
Depth (MOD)
Icon for stopwatch and safety stop
Logbook indicator
Total ascent time / Dive number
Ascent time icon
Desaturation time indicator
No-stop time / Decompression duration / MB no-stop time
Level stop duration / Duration of Microbubble Warning
Desaturation duration / Duration of surface interval
NO
DECO STOP
LEVELSTOP
NO STOP
%
Transmitter warning
O2 mix
Tank icons
Decompression stop obligation
Ignored decompression stop
Tank pressure / Gas consumed
Partial pressure of oxygen ppO2
Level stop indicator
No-stop indicator
Decompression stop indicator
Increased workload warning
Remaining bottom time RBT / Number of active tanks
Tank pressure warning
At the surface: several gas mixture have been set
Decompression depth / Level stop depth
Oxygen toxicity CNSO2
Ascent rate
Battery capacity
Read and understand the TEC instructions
prior to using the TEC.
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Operating scheme Smart TEC
Select (press) and confirm (press and hold) gas mixtures
Start / Confirmation / Enter
Activate the timer for safety stops (dive mode only, in depths
< 6.5 m / 20 ft) (press)
Operate the stopwatch (gauge mode only) (press)
Set a bookmark (press)
+ / Navigate
– / Navigate
On the surface TEC switches off
automatically after 3 minutes
without operation.
Toggle between maximum depth > temperature > MB level > …(press)
Intermediate time and reset (in gauge mode only and while stopwatch is active) (press)
Switching on the backlight (press and hold)
Display
switched off
Switching on
Dive planner
Microbubble level
O2 mix
Logbook
Gauge mode
Navigation
(
+ Surface
– interval
%
)
%
Battery capacity
%
10
+
–
Percentage
of oxygen
+
–
NO STOP
%
%
+
–
+
–
+
–
Gauge mode
on and off
Dive number
Bottom time
Exit (2 sec.)
Microbubble
level
Exit
+
–
Maximum
operating
depth (MOD)
Confirmation
Confirmation
Confirmation