Scubapro-uwatec SMART Z User Manual

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Page 1

Operating Manual

SWISS MADE BY UWATEC AG

Smart Z

English

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Page 2

Safety considerations

UWATEC® Smart dive computers

You must carefully read and understand this entire manual before using your new computer.

Diving has many inherent risks. Even if you follow the instructions of this manual in a careful manner, it is still possible that you may be seriously injured or die from decompression sickness, oxygen toxicity or some other inherent risk of scuba with Nitrox or compressed air. Unless you are fully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use the computer!

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 guide

lines 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% O

) 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 ppO

warning, the default limits of which are set at 1.4 bar ppO2max. This limit

can be adjusted via SmartTRAK. An alteration of the ppO

max to higher than 1.6 bar is dangerous and

we do not recommend this.

• Frequently check the "oxygen clock" (CNS O

), especially in the range higher than 1.4 bar ppO2.

Ascend and finish the dive if the CNS O

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 surfac

ing

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.

WARNING

Page 3

English

Safety considerations

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 com

puter! 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 O

% 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.

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.

Page 4

Introduction

UWATEC® Smart dive computers

The following symbols are used in the operating manual:

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!

– + E

Bridge contacts

Example: bridging contacts B and E

Instructions for manual input

Flashing display

Audible attention signal

Audible signals

April 2005, Copyright

by UWATEC Switzerland

4 sec.

Audible alarm signal

Important remarks concerning signal words and symbols

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.

Page reference e.g. ->10

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

WARNING

Page 5

English

Quick reference

UWATEC® Smart dive computers

Logbook

Dive planner

Battery capacity

O2 mix

Microbubble level

Exit (2 sec.)

Exit

Confirmation

Switching on

–

Gauge mode

Confirmation

–

Navigation

Display

switched off

Bottom time

–

Surface interval

–

( )

Percentage of oxygen

Microbubble level

Gauge mode on and off

–

Maximum operating depth (MOD)

–

Dive number

–

CNS O2%

NO STOP

CNS O2%

Dive planner icon

Logbook icon

Microbubble level icon (input / MB level reduced)

O2 mix icon (input)

Current depth

Altitude sections

Ascent obligation

Too fast ascent

Maximum depth Microbubble level Maximum Operating Depth (MOD)

Service icon

Do not fly icon

Dive time / No-fly time / SOS duration

Oxygen toxicity CNS O2% Ascent rate Battery capacity

Desaturation time indicator

Desaturation duration / Duration of surface interval

Total ascent time / Dive number

Increased workload warning

ansmitter warning

Remaining bottom time RBT

Decompression depth / Level stop depth

No-stop time / Decompression duration / MB no-stop time Level stop duration / Duration of Microbubble Warning

Tank pressure / Gas consumed

Partial pressure of oxygen ppO2

Logbook indicator

Ascent time icon

No-stop indicator

Level stop indicator

Decompression stop obligation

Ignored decompression stop

Tank pressure warning

Decompression stop indicator

Gauge icon

Do not dive icon Microbubble warning

O2 mix

Temperature

CNS O2%

DECO

STOP

NO STOP

LEVELSTOP

Start / Confirmation / Enter

+ / Navigate

– / Navigate

Display switches off automatically after 3 minutes without operation.

Operating scheme

Page 6

I Safety considerations ___________________________________ 2 Introduction ___________________________________

Important remarks concerning signal words and symbols ______________________________

Quick reference / Operating scheme ___________________________________

List of chapters ___________________________________

II System and operation ___________________________________

1 System description ___________________________________

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 __________________________________

3 SOS mode __________________________________

4 Setting up Smart Z __________________________________

4.1 Mounting of transmitter __________________________________

4.2 Pairing of transmitter and dive computer __________________________________

III Diving with Smart Z __________________________________

1 Terminology / Symbols __________________________________

1.1 General terminology / Display during no-stop phase __________________________________

1.2 Display during decompression phase / Remaining Bottom Time __________________________________

1.3 Nitrox information (

O2 information) __________________________________ 16

2 Attention messages and alarms __________________________________

2.1 Attention messages __________________________________

2.2 Alarms __________________________________

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 __________________________________

4 Functions during the dive __________________________________

4.1 Immersion __________________________________

4.2 Dive time __________________________________

4.3 Current depth __________________________________

4.4 Maximum depth __________________________________

4.5 Temperature __________________________________

4.6 Ascent rate __________________________________

4.7 Partial pressure of oxygen (pp

O2) / Maximum Operating Depth (MOD) ___________________ 20

4.8 Oxygen toxicity (CNS

O2%) __________________________________21

4.9 Tank pressure __________________________________

4.10 Remaining Bottom Time (RBT) __________________________________

4.11 Decompression information __________________________________

5 Functions at the surface __________________________________

5.1 End of a dive __________________________________

5.2 Desaturation time __________________________________

5.3 No-fly time __________________________________

5.4 Microbubble warning __________________________________

List of chapters

UWATEC® Smart dive computers

Page 7

English

List of chapters

UWATEC® Smart dive computers

6 Diving in mountain lakes __________________________________ 25

6.1 Altitude ranges __________________________________

6.2 Prohibited altitude __________________________________

6.3 Decompression dives in mountain lakes __________________________________

IV Gauge mode __________________________________

V Diving with microbubble levels (MB) __________________________________

1 Comparison of dives with MB level L0 and MB level L5 __________________________________

2 Terminology __________________________________

2.1 Display during microbubble (MB) no-stop phase __________________________________

2.2 Display during level stop phase __________________________________

3 Preparation for a dive with microbubble levels (MB levels) __________________________________

3.1 Setting the MB level __________________________________

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 __________________________________

5 Complete a dive with MB levels __________________________________

VI Dive planner __________________________________

1 Planning a no-stop dive __________________________________

2 Planning a decompression dive __________________________________

3 Leaving the dive planner __________________________________

VII

Logbook __________________________________ 35

1 Survey __________________________________

2 Operation __________________________________

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 __________________________________

Page 8



  

II System and operation

UWATEC® Smart dive computers

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).

2 Operation

On page 5 you will find an operating schematic.

2.1 Operating elements

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.

Pressure transmitter

Contacts

Infrared port

SmartTRAK

Infrared Interface (option)

Page 9

II System and operation

UWATEC® Smart dive computers

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 (ppO

2 max

) 1-1.95 bar

• Time limit to reset the O

% 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

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

English

Page 10

UWATEC® Smart dive computers

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.

• Smart Z switches on by bridging the contacts B and E. All segments light up for 5 seconds.

Afterwards the display shows the selected O2 mix, the

temperature and in certain circumstances an altitude range

->25.

If the transmitter is switched on and located within trans

mitting distance, the tank pressure is displayed, otherwise "---" will be displayed. If no transmitter has been paired yet, the display will be blank.

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. For a 7-day diving vacation Smart Z uses between 2 – 5 % of its battery capacity.

CNS O2%

DECO

STOP

NO STOP

LEVELSTOP

Do not fly icon

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.

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.

Temperature

O2 Mix

No-fly time

Oxygen toxicity

Desaturation time

Gauge mode ->26

Input microbubble level ->30

Input O

mix ->18

Logbook ->35

Dive planner ->33

Page 11

English

UWATEC® Smart dive computers

2 Operation / 3 SOS mode

3 SOS mode

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.

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.

Time remaining until

SOS mode switches

off automatically

CNS O2%

2.6 Active backlight

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.

WARNING

Page 12

UWATEC® Smart dive computers

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.

Use air and Nitrox components in accordance with the law of the country.

Procedure:

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.

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.

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.

(Adaptor)

WARNING

Page 13

English

UWATEC® Smart dive computers

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:

• 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.

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.

10 sec.

Page 14

UWATEC® Smart dive computer

4 Setting up Smart Z

How to check if transmitter and computer are paired correctly:

1. Switch on the computer manually (B and E)

2. Move the computer into transmitting range of the transmitter.

3. Open the tank valve. The transmitter switches on automatically.

4. 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.

Pairing ok

Pairing not present

Pairing present, no pressure data available

Page 15

English

III Diving with Smart Z

UWATEC® Smart dive computers

III

1 Terminology / Symbols

The information on the display of Smart Z varies depending on the kind of dive and the dive phase.

For information about diving with microbubble levels (MB levels) see chapter V

->28.

1.1 General terminology / Display during no-stop phase

37 min. Dive time

Elapsed bottom time

No-stop time

24min

Current depth

Maximum depth

26.2 m

Decompression phase

Dive phase during which surfacing is allowed only after decompression stops are completed.

No-stop phase

Dive phase during which surfacing is allowed without stop.

Ascent rate

(Only while ascending)

SPEED

Tank pressure

Current depth

In metres (feet)

Maximum depth

reached during the dive

No-stop time

Remaining time at a given depth during which ascent is allowed without decompression stop (min).

Oxygen toxicity

CNS O2%

Time

Depth

Dive time

Duration of the dive (min)

O2% Mix

Selected oxygen fraction

RBT, Remaining bottom time

Temperature

CNS O2%

NO STOP

CNS O2%

DECO

STOP

6 m

35.7 m

3 m

RBT 21 min

Decompression stop All required decompression stops must be observed.

Decompression stop depth

Deepest stage is displayed.

Decompression stop duration

Prescribed duration of the decompression stop at the displayed decompression stage (minutes).

Total ascent time Including decompression stops in minutes.

Remaining Bottom Time, RBT

Maximum remaining time at current depth including all decompression obligations (minutes).

Decompression stop duration 2 min

Time

Depth

Total ascent time to surface (7 min)

Deepest decompression stop depth

Decompression r

angeNo-stop range

1.2 Display during decompression phase / Remaining Bottom Time (RBT)

Page 16

1.3 Nitrox information (O2 information)

For dives with compressed air in normal recreational diving, nitrogen is the decisive gas for the decom

pression 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.

ppO

2 max.

Maximum allowed partial pressure of oxygen: the higher the fraction of oxy-

gen in the mixture, the shallower the dive depth at which this value of the partial pressure of oxygen is reached. The depth at which ppO

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 ppO

max. limit setting and the corresponding MOD. Smart Z warns the diver audibly and visually once the depth is reached at which the ppO

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 O

% value/alarm is not influenced by the selected ppO2max. set-

ting.

"CNS O

" Oxygen toxicity: With the increased

percentage of oxygen, the oxygen in the tissues (especially in the cen

tral 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 O

value decreases. The closer

the CNS O

value is to 100%, the closer the limit where symptoms can occur. See page 21.

Nitrox diving may only be attempted by experienced divers after proper training

from an internationally recognized agency.

1 Terminology / Symbols

UWATEC® Smart dive computers

CNS O2% increases

ppO

0,5 bar

CNS O2% decreases

0,21 bar

WARNING

Page 17

2 Attention messages and alarms

UWATEC® Smart dive computers

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.

The audible attention messages (but not the alarms) can be selectively switched off with SmartTRAK.

III

English

2.1 Attention messages

Attention messages are communicated to the diver visually by symbols, letters or flashing figu

res. In addition, two short audible sequences can be heard (in an interval of 4 seconds) in two diffe

rent frequencies under water.

Attention messages come up in the following situations (more information can be found on the listed pages): Page

• Maximum Operating Depth / max ppO

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

• 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 30

• MB level stop ignored 31

• MB level reduced 31

• Entering decompression when diving with MB level L1-L5 31

*without audible attention beep

4 sec

2.2 Alarms

Serious injury or death may result from failing to immediately respond to alarms given by Smart Z.

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.

An alarm occurs in the following situations (more information can be found on the listed pages):

Page

• Oxygen toxicity reaches 100% 21

• Ignored decompression 23

• Remaining Bottom Time = 0 22

• Exceeding the prescribed ascent rate 20 (Particular scale of beeps, ->20)

• Low battery alarm*

* 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.

Transmitter battery low: **

"bAt" flashing and alternating with the display of the tank pressure.

Replace the battery in the transmitter ->36.

**without audible alarm

(can be switched off)

(can not be switched off)

WARNING

Page 18

3 Preparation for the dive

UWATEC® Smart dive computers

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.

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, ppO

max (as pre-set by means of SmartTRAK) and

the MOD.

4. Confirm the selected percentage with B and E.

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 (pp

O2 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 O

% 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

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!

–

CNS O2%

DECO

STOP

NO STOP

LEVELSTOP

…

O2% mix PpO2max.

Max. Operating

Depth MOD

–

ppO2max.

WARNING

Page 19

4 Functions during the dive

UWATEC® Smart dive computers

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 decompres

sion 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.

4.2 Dive time

The whole time spent below a depth of 0.8m (3 feet) is displayed as dive time

in minutes. The time above 0.8m (3 feet) is counted as dive time only if the diver descends again below 0.8m (3 feet) within 5 minutes.

While the dive time is running, the colons on the right of the figures are

flashing in one second intervals. Maximum dive time displayed is 199 minutes.

If a dive lasts longer than 199 minutes the dive time display starts again at 0 minutes.

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.

III

English

NO STOP

4.4 Maximum depth

Maximum depth is only displayed if it exceeds the current depth by more than 1 m (3 feet) (maximum indicator function).

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.

4.6 Ascent rate

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.

NO STOP

CNS O2%

NO STOP

4 sec

Maximum depth

Temperature

Ascent arrow

Current depth

Dive time

Ascent rate

WARNING

Page 20

4 Functions during the dive

UWATEC® Smart dive computers

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 O

Ascent rate Visual

alarm

Audible alarm

SPEED

S L O

L O W

S L O W

L O W

4.7 Partial pressure of oxygen (ppO

2 max

) / Maximum Operating Depth (MOD)

The maximum partial pressure of oxygen ppO

2 max

(default 1.4 bar) determines 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 ppO

2 max

can be reduced manually at Smart Z

(->18, setting the gas mixture, point 5).

In addition the maximum allowed ppO

can be set by means of SmartTRAK

between 1.0 to 1.95 bar.

The MOD is a function of ppO

2 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 poi

soning.

• The MOD should not be exceeded. Disregarding the warning can lead to oxygen poisoning.

• ppO

2 max

should not be set higher than 1.6 bar.

CNS O2%

NO STOP

4 sec

WARNING

Excessive ascent rates for longer periods are entered in the logbook.

Reduce ascent rate

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

speed (m/min) 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

Page 21

English

4 Functions during the dive

UWATEC® Smart dive computers

III

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 (O

clock). The symbol "CNS O2" is

displayed together with the percentage.

An audible attention signal goes off if oxygen tox

icity reaches 75%. The symbol "CNS O

" 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 O

", the precentage value and the ascent arrow flash. Danger of oxygen toxicity!

Start ascent at once.

• During an ascent and if the CNS O

% 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 O

% value.

• Smart Z will display CNS O

% 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.

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.

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 acti

vate 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.

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.

CNS O2%

NO STOP

CNS O2%

4 sec

CNS O2%

NO STOP

4 sec

Transmitter warning

4 sec

If tank pressure <14 bar/200psi

WARNING

WARNING WARNING

WARNING

Oxygen toxicity

Page 22

4.11 Decompression information

No-stop time is displayed if no decompression stops are necessary. The arrow

NO STOP

is visible if no

decompression stops are necessary. The figures indicate no-stop time in minutes.

• 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

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.

Dives that require decompression stops are not recommended.

4 Functions during the dive

UWATEC® Smart dive computers

NO STOP

CNS O2%

NO STOP

4 sec

No-stop time

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 pres

sure (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.

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.

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.

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 flas-

hing.

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 sec

RBT < 3 minutes

RBT = 0 minutes

WARNING

Page 23

English

4 Functions during the dive

UWATEC® Smart dive computers

III

Decompression values 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 decom

pression 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 decom

pression 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 dura-

tion 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!

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 workloa

Ascent time greater than

99 minutes is displayed as "– –".

On all dives with Smart Z, make a safety stop for at least three minutes at a depth of 5 m (15 feet).

CNS O2%

DECO

STOP

CNS O2%

DECO

STOP

Total time of ascent

CNS O2%

DECO

STOP

Decompression

time

Decompression

stop depth

Ignored decompression

alarm

WARNING

Page 24

5 Functions at the surface

UWATEC® Smart dive computers

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.

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

After the dive has been closed

DESAT

, desaturation time in hours and 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 O

") 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 manipula-

tion is made. The calculations are nevertheless continued in the background.

5.3 No-fly time

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.

Flying while Smart Z displays "do not fly" may lead to serious injury or death from decompression sickness.

CNS O2%

Desaturation time

Oxygen toxicity

Do not fly icon

No-fly time

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 micro

bubbles occurs during the surface interval, it will advise a diver to extend the surface interval via the microbubble warning. The duration of the microbubble warning is visible by entering the dive planner -> 33.

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.

CNS O2%

Microbubble warning

Desaturation time

WARNING

Page 25

4000 m 13120 ft

2000

6560 ft

1000

3280 ft

3000

9840 ft

905 mbar

13.12 psi

815 mbar

11.82 psi

725 mbar

10.51 psi

610 mbar

8.85 psi

Switching

at approx. No deco data gauge mode

English

6 Diving in mountain lakes

UWATEC® Smart dive computers

III

Altitude range 1

Desaturation time

Adaptation time

Altitude ranges

1 2 3 4

6.2 Prohibited altitude

Smart Z shows via flashing alti

tude segments while

at the surface to which altitude

the diver may not

rise.

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.

Ascent to altitude range 3

and 4 prohibited.

Max. allowed altitude:

2650 m (8694 ft).

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…).

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.

Dive at altitude range 4:

• no deco data

• no RBT

6.1 Altitude ranges 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 1000m (3300 feet) is not indicated. In the following diagram, you can see the approximate breakdown of the altitude ranges

WARNING

Max. altitude: 850 m 1650 m 2650 m 4000 m 2790 ft 5413 ft 8694 ft 13120 ft

Page 26

IV Gauge mode

UWATEC® Smart dive computers

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 ppO

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.

• 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 ac

cepted.

Diving in gauge mode

The following information is displayed in gauge mode:

Current depth

Gauge icon

Dive time

Maximum depth

Tank pressure

Temperature

WARNING

Page 27

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.

The no-fly time after diving in gauge mode is 48 hours.

Desaturation time will not be displayed.

English

IV Gauge mode

UWATEC® Smart dive computers

Page 28

V Diving with microbubble levels (MB)

UWATEC® Smart dive computers

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 decom

pression 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 micro

bubbles 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.

3m/10ft

6m/20ft

9m/30ft

12m/40ft

15m/50ft

Time

Depth

Microbubble

level

Microbubble accumulation at the end of dive

Stop depth

DECO

STOP

LEVELSTOP

NO STOP

LEVELSTOP

NO STOPNO STOP

NO STOP

DECO

ft ft

Decompression values

Level stop values

Decompression obligation, ->31

Page 29

English

2 Terminology

UWATEC® Smart dive computers

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).

2.1 Display during microbubble (MB) no-stop phase

Dive time

MB no-stop time

21min

Current depth

Maximum depth

29.9 m

Level stop phase

MB no-stop phase

Dive phase during which surfacing is possible without MB level stop

Time

Depth

MB level

An MB level between L1 and L5 was chosen.

MB no-stop time

Remaining time at a respective depth allowing ascent without level stop

CNS O2%

NO STOP

2.2 Display during level stop phase

Lowest level stop depth

Total ascent time (14 min)

3 min Level stop duration

MB no-stop phase

Time

Depth

Level stop duration

The duration of a level stop at a given level stop depth is displayed.

Level stop dept

The deepest level stop is displayed.

Total ascent time

including level stops

Level stop phase

To complete the dive without being reduced to a lower MB level all requested level stops must be observed.

35.7m

9m/30ft

6m/20ft

3m/10ft

CNS O2%

LEVELSTOP

Page 30

3 Preparation for a dive with microbubble levels (MB levels)

UWATEC® Smart dive computers

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.

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.

Level stop

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.

NO STOP

MB no-stop time

–

CNS O2%

LEVELSTOP

Deepest level stop depth

Total ascent time

Level stop duration

Level stop icon

Page 31

English

4 Functions during the dive with microbubble levels

UWATEC® Smart dive computers

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.

* Attention beeps can be suppressed via SmartTRAK.

CNS O2%

LEVELSTOP

4 sec

CNS O2%

DECO

LEVELSTOP

4 sec

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.

The total time of ascent is calculated on the basis of the prescri

bed

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 workloa

4.3 Decompression obligation

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.

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.

Level stop ignored

CNS O2%

LEVELSTOP

4 sec

Microbubble level reduced

CNS O2%

DECO

LEVELSTOP

Decompression obligation

Level stop information

New microbubble level

CNS O2%

LEVELSTOP

WARNING

Total ascent time

Page 32

4 Functions during the dive with microbubble levels

UWATEC® Smart dive computers

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.

4.4 Level stop and deco stop

When the level stop depth equals the depth of the first obligatory decompres

sion 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.

Since level stops are more restrictive than decompression stops, when all decompression obligations have been observed the display changes from

DECOSTOP

LEVELSTOP

only.

Microbubble

level

3m/10ft

Deco stop duration

Level stop duration

Depth

Time

LEVELSTOP

Level stop duration

decompression stop depth = level stop depth

Page 33

English

VI Dive planner

UWATEC® Smart dive computers

Smart Z has a dive planner which allows the planning of no-stop dives as well as decompression dives with freely determinable surface intervals.

• 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 decompres

sion 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

its duration are displayed if Smart Z detects an increased risk due to the accumulation of microbubbles.

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 B and + or B and – in steps of 15 minutes.

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.

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.

Input of the surface interval

CNS O2%

NO STOP

Icon for microbubble level L1-L5

No-stop time or MB no-stop time

Microbubble warning (Do Not Dive)

Duration of the warning

Basis of the planning:

–

WARNING

Enter the dive planner

Dive planner icon

if rep. dive

Page 34

VI Dive planner

UWATEC® Smart dive computers

NO STOP

–

Bottom Time

CNS O2%

DECO

STOP

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 plan

ning 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.

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 O

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.

Page 35

English

VII Logbook

UWATEC® Smart dive computers

VII

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 log

book, the time since the last dive (surface interval) is displayed.

With B and E you get the most recent dive displayed (LOG 1).

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.

CNS O2%

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 inter

face (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:

If a dive is started within adaptation time (after a change of altitude), the adaptation time is displayed instead of the surface interval.

Ignored decompression stop* or diving in SOS mode

Gas consumed (bar or psi)

Too fast ascent*

Ignored decompression stop*

action of oxygen

Altitude range (if any) Maximum depth

dP = differential pressure (gas consumed)

Lowest temperature

Logbook icon Diving in gauge mode

MB level reduced*

Dive time Dive number

Duration of surface interval (only with repetitive dives)

CNS O2 value at the end of the dive

Increased workload warning*

*Alarms during the dive

CNS O2%

DECO

Page 36

VIII Appendix

UWATEC® Smart dive computers

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.

• 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:

• 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

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.

WARNING

Page 37

VIII Appendix

UWATEC® Smart dive computers

Never touch the metal surface of the battery with bare fingers. The two battery poles must never be short circuited.

Procedure:

To replace the battery you need a Phillips screwdriver and a clean cloth.

• 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.

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.

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.

VIII

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

Transmitter Battery CR2450

Transmitter Cap

Page 38

VIII Appendix

UWATEC® Smart dive computers

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.

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.

260

240

220

200

180

160

140

120

150 160 170 180 190 200 210 220 230 bar

Display Smart Z

Display pressure gauge

3770

3480

3190

2900

2610

2320

2030

1740

psi

bar

2175 2320 2465 2610 2755 2900 3045 3190 3335 psi

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.

WARNING

Page 39

English

Active backlight __________________________ 11 Ascent rate ____________________ 15, 17, 19, 20 Battery alarm ____________________________

Battery capacity, Checking the… ____________

Battery lifetime ___________________________

Beep, Switch off the… ____________________

CNS O

2 ____________________15, 16, 17, 21, 35

Deco data during decompression phase ______

Deco data during no-stop phase ____________

15 Decompression stop, Ignored… __________ 17, 23 Depth, current ___________________________

19 Desaturation time ________________________

24 Dive ____________________________________ 15 Dive planner _____________________________

33 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 ________________________________ 35 Maintenance ____________________________ 36 Maximum depth ______________________ 19, 35 Microbubbles ____________________________

28 Microbubbles, Warning of… ____________ 24, 33 Mountain lakes, Diving in… ____________25, 35

VIII Appendix

UWATEC® Smart dive computers

VIII

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 "O

2…"

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

6 Index

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.

Page 40

UWATEC® Smart dive computers

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 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 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 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 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 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

8.05

Protect the environment! When disposing of this computer, do so in an environmentally friendly way.

Scubapro-uwatec SMART Z User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual