Shearwater DiveCAN Petrel 1 User manual

Rebreather Controller Model

DiveCAN

Operations Manual

Petrel 1 / Petrel 2

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Shearwater DiveCAN®Petrel

Table of Contents

Introduction��5

Models Covered by this Manual ��5

Feature List��6

What is DiveCAN®?��7

DiveCAN®Advantages��8

Turning On ��9

Buttons��10

The Main Screen��11

Color Coding��11

The Top Row��12

The top row shows depth and time information� ��12

The Center Row��14

The Bottom Row ��15

Info Screens ��17

Compass (Petrel 2 only) ��22

Menus ��24

Menu Structure ��25

Basic Setup��26

Simple Dive Example ��27

Complex Dive Example��29

Decompression and Gradient Factors ��33

Menu Reference��34

Turn Off��34

Calibration��34

Calibration Problems��35

Switch Setpoint ��36

Select Gas ��37

Radio Station Gases ��37

Select Gas Menu Styles��38

Switch to OC/CC��39

Dive Setup+ ��39

Edit Low Setpoint ��39

Edit High Setpoint ��40

Dene Gas ��41

Dive Planner+ ��43

Conservatism ��45

Shearwater DiveCAN®Petrel

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NDL Display ��46

External PPO2 Monitoring ��48

Brightness ��49

Setpoint -> �19 ��49

Dive Log Menu��50

Display Log ��50

Upload Log��50

Edit Log Number ��50

System Setup+ ��51

Dive Setup��52

Deco Setup ��53

OC Gases ��53

CC Gases ��53

O2 Setup��54

Auto SP (Setpoint) Switch��54

Display Setup��55

Compass Setup (Petrel 2 only) ��57

System Setup��59

Advanced Conguration 1��60

Advanced Conguration 2��61

Firmware Upload and Dive Log Download��62

Changing the Battery ��63

Battery Types��64

Tissues Cleared ��65

Error Displays��66

Storage and Maintenance��68

Servicing ��68

Specications ��69

FCC Warning��70

Industry Canada Warning ��70

Table of Contents (continued)

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Shearwater DiveCAN®Petrel

WARNING

This computer has bugs� Although we haven’t found them all yet, they are there� It is

certain that there are things that this computer does that either we didn’t think about,

or planned for it to do something different� Never risk your life on only one source of

information� Use a second computer or tables� If you choose to make riskier dives,

obtain the proper training and work up to them slowly to gain experience�

This computer will fail� It is not whether it will fail but when it will fail� Do not depend on

it� Always have a plan on how to handle failures� Automatic systems are no substitute

for knowledge and training�

No technology will keep you alive� Knowledge, skill, and practiced procedures are your

best defense (Except for not doing the dive, of course)�

DANGER

This computer is capable of calculating deco stop requirements� These calculations are

at best a guess of the real physiological decompression requirements� Dives requiring

staged decompression are substantially more risky than dives that stay well within no-

stop limits�

Diving with rebreathers and/or diving mixed gases and/or performing

staged decompression dives and/or diving in overhead environments

greatly increases the risk of scuba diving�

You really are risking your life with this activity�

Shearwater DiveCAN®Petrel

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Introduction

The Shearwater Petrel is an advanced technical diving computer for open and closed

circuit divers�

Although we strive to make the Petrel easy enough to use without reading the manual,

please take some time to read this manual to get the best performance from your new

computer� Diving involves risk and education is your best tool for managing this risk�

Models Covered by this Manual

This manual provides operating instructions for the Petrel DiveCAN® Rebreather

Controller model� For instructions on the Standalone (SA) and EXT Petrel models, see

the document Shearwater Petrel Manual - Standalone and EXT Models�

Petrel 1 vs� Petrel 2

This manual covers both the Petrel 1 and Petrel 2 models� The difference between

the models is that the Petrel 2 has a digital compass and also supports Bluetooth

Smart Ready (i�e� dual mode Bluetooth supporting both Bluetooth Classic v2�1 and

Bluetooth Smart v4�0)� Bluetooth Smart is used for connecting to iOS devices�

All other features are the same between the Petrel 1 and Petrel 2� Both models

use the same rmware le and rmware version number.

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Shearwater DiveCAN®Petrel

Feature List

• Depth, time and oxygen sensor display

• Bühlmann decompression model with gradient factors conservatism

• Optional VPM-B decompression model

• Imperial and metric displays

• DiveCAN communications for robust connections to rebreathers

• A menu system that adapts to diving status

• Automatic turn off after 15 minutes on the surface

• Depth sensor rated to 450 feet/140 meters of seawater

• Dive Planner

• Any combination of oxygen, nitrogen, and helium (Air, Nitrox, Trimix)

• Open and closed circuit, switchable during a dive

• 5 CC and 5 OC gases

• Gases can be changed and added during a dive

• CNS tracking

• No lockout from violating deco stops

• Automatic PPO2 set-point switching (congurable)

• Two PPO2 set-points, each of which can be set between �5 and 1�5

• Flexible user replaceable battery� Almost any ‘AA’ type

• Tilt compensated digital compass (Petrel 2 only)

• 1000 hour dive log memory

• Log downloads and rmware upgrades using Bluetooth

Shearwater DiveCAN®Petrel

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What is DiveCAN®?

DiveCAN® is a digital communications standard developed specically for rebreathers.

DiveCAN®connections allow rebreather components to communicate

A minimum conguration has a Control Bus with a handset connected to rebreather electronics

("bus" is a term used to describe the connections between communicating electronic modules)�

Depending on your rebreather, a secondary Monitor Bus may be used� This independent bus

provides backup PPO2 monitoring in the event of a failure of the primary control bus�

Spare auxiliary ports may be included for additional devices or future expansion� Even if your

rebreather does not have a spare port, additional devices can be added with the use of Y-cables�

DiveCAN®devices connect together using specially designed underwater connectors� This allows

easy disconnection of devices for upgrades, repair, and travel�

DiveCAN

Monitor BusControl Bus

LED HUD

Monitor Port

Petrel Handset

Future Device

(Optional) Auxiliary Port

Handset Port

Rebreather

CONTROLLER

SOLO

(SOLenoid &

Oxygen

electronics)

OBOE

(Oxygen

BOard

Electronics)

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Shearwater DiveCAN®Petrel

DiveCAN®Advantages

The DiveCAN®standard was designed to improve rebreather electronics� It offers the following

advantages over the previous generation of analog wiring:

• Robust error-checked communications� A message is either received correctly or it isn't�

Compare this with analog wiring where corrosion or poor connections can result in incorrect

data being used�

• Upgradable and expandable� As new technologies are introduced, they can be plugged into

existing rebreathers�

• Components (handset, HUD, etc) can be easily removed for travel, repair, backup, and

upgrades�

• Modular design compartmentalizes critical functions for redundancy� For example, the

Solenoid and Oxygen electronics (SOLO) can measure and inject oxygen independently of

the handset� If the handset is unplugged or damaged, the SOLO can continue to control loop

PPO2�

The DiveCAN®connectors are shown below� These connectors are miniature versions of the

underwater connectors used in the oil and gas industry� They are robust and rated to 2000ft

underwater�

Male Connector

Female Connector

Shearwater DiveCAN®Petrel

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Turning On

To turn the Petrel on, press both the

MENU (left) and the SELECT (right)

buttons at the same time�

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Shearwater DiveCAN®Petrel

Buttons

Two piezo-electric buttons are used to change settings and view menus�

Except for turning the Petrel on, all operations are simple single button presses�

Don’t worry about remembering all the button rules below� Button hints

make using the Petrel easy�

MENU button (Left)

• From main screen: brings up the menu�

• In a menu: moves to the next menu item�

• Editing a setting: changes the setting’s value�

SELECT button (Right)

• From main screen: steps through information screens�

• In a menu: performs command or starts editing�

• Editing a setting: saves the setting’s value�

BOTH BUTTONS

• When Petrel is off: pressing MENU and SELECT at the same time will turn

the Petrel on�

• No other operation requires pressing both buttons at the same time�

When in a menu, button hints label each button�

For example, the hints to the right tell us:

use MENU to change the brightness value�

use SELECT to save the current value�

Button Hints



 









SELECT (right)

button

MENU (left)

button

MENU hint SELECT hint

This manual suits for next models

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