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Shearwater Petrel

Revision 1.1.0

5

Shearwater Research Inc.

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 

Standalone

 (

SA

) and Petrel 

External

 (

EXT

) models� For instructions on the Petrel rebreather controller models using 

DiveCAN® communications, see the Shearwater DiveCAN® Petrel Manual�

Feature List

• 

Depth, time and oxygen sensor display

• 

Bühlmann decompression model with gradient factors conservatism

•  Optional VPM-B decompression model

• 

Imperial and metric displays

• 

Available in Standalone (SA) model and External (EXT) PPO2 monitoring model

• 

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 (configurable)

• 

Two PPO2 set-points, each of which can be set between �4 and 1�5

•  Flexible user replaceable battery�  Almost any ‘AA’ type
•  1000 hour dive log memory

•  Log downloads and firmware upgrades using Bluetooth

Содержание Petrel EXT

Страница 1: ...Standalone EXT Models...

Страница 2: ...Circuit Menu Structure 20 Closed Circuit Int PPO2 Menu Structure 21 Closed Circuit Ext PPO2 Menu Structure 22 Basic Setup 23 Simple Example Dive 24 Complex Example Dive 25 Gauge Mode 28 Stopwatch 28 R...

Страница 3: ...ive Setup 48 Deco Setup 50 OC Gases 50 CC Gases 50 O2 Setup 51 Auto SP Setpoint Switch 51 Display Setup 52 System Setup 54 Advanced Configuration 1 55 Advanced Configuration 2 56 Firmware Upload and D...

Страница 4: ...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...

Страница 5: ...al Feature List Depth time and oxygen sensor display B hlmann decompression model with gradient factors conservatism Optional VPM B decompression model Imperial and metric displays Available in Standa...

Страница 6: ...Shearwater Research Inc Revision 1 1 0 6 Shearwater Petrel Turning On To turn the Petrel on press both the MENU left and the SELECT right buttons at the same time...

Страница 7: ...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...

Страница 8: ...itions YELLOW is used for warnings that are not immediately dangerous but should be addressed FLASHING RED is used for critical alerts that could be life threatening if not immediately addressed The w...

Страница 9: ...Flashes Red when 6 arrows or more Note Deco calculations assume 33fpm 10mpm ascent rate Dive Time The length of the current dive in minutes The seconds display as a bar drawn below the word Time It ta...

Страница 10: ...ce will be shorter than the actual TTS since off gasing is occurring slower than expected There is also an option to set the last stop to 20ft 6m if you wish Surface Interval When on the surface the S...

Страница 11: ...ay Open Circuit Closed Circuit with Internal PPO2 Setpoints Closed Circuit with External PPO2 Monitoring Only available on EXT model In CC mode PPO2 displays in Flashing Red when less than 0 40 or gre...

Страница 12: ...The B hlmann ZHL 16C super saturation percent gradient CNS Central Nervous System CNS toxicity clock as a percentage Clock The time of day in 24hr or am pm format same as system setting Does not show...

Страница 13: ...it mode this is the breathing gas Displays in Yellow when there is better deco gas available than the current gas No Decompression Limit NDL The time remaining in minutes at the current depth until de...

Страница 14: ...tings Press MENU left button to enter menus Warnings Provide important alerts Press SELECT right button to clear a warning GF99 The raw percentage of the B hlmann allowable supersaturation at the curr...

Страница 15: ...creen Info screens time out after 10 seconds returning to the main screen Pressing the MENU left button will also return to the main screen The info screen content is optimized for each mode Set the P...

Страница 16: ...when on the surface and turned off When deco tissues are reset the CNS will also be reset PPO2 average PPO2 Only relevant when external PPO2 monitoring is used since other modes already show PPO2 on...

Страница 17: ...ottom Each bar is the combined sum of the nitrogen and helium inert gas tensions Pressure increases to the right The vertical black line shows the inert gas inspired pressure The boundary between the...

Страница 18: ...ressure is only shown on the surface The surface pressure is set when the Petrel is turned on If the Altitude setting is set to SeaLvl then surface pressure is always 1013 millibars Temperature The cu...

Страница 19: ...buttons are pushed for 1 minute the menu system will time out returning to the main screen Anything that had been previously saved will be retained Anything that was in the middle of editing will be d...

Страница 20: ...modes Open Circuit Menu Structure Main Screen Turn Off Select Gas Dive Setup Dive Log System Setup Surface only Surface only Surface only Define Gas Dive Planner Conserv NDL Display Brightness Displa...

Страница 21: ...tup Dive Log System Setup Surface only Surface only Surface only Define Gas Dive Planner Conserv NDL Display Brightness Display Log Upload Log Edit Log Number Dive Setup Deco Setup Center Row CC Gases...

Страница 22: ...as Dive Setup Dive Log System Setup Surface only Surface only Surface only Define Gas Dive Planner Conserv NDL Display Brightness Display Log Upload Log Edit Log Number Dive Setup Deco Setup Center Ro...

Страница 23: ...r enter the gases for you will use for open circuit The system will use the gases that are available in the order of oxygen content during the Time To Surface TTS prediction The system will use the ne...

Страница 24: ...wn in minutes the computer will calculate and change the ceiling in real time and the stop may be less than a minute As we ascend the ascent rate indicator shows about 20 fpm or 6 mpm When we go shall...

Страница 25: ...ly two gases configured We SELECT gas number 2 the Trimix 10 50 The system will use both of these gases for our dive when calculating the TTS It assumes a diluent switch at a PPO2 of 1 05 That means t...

Страница 26: ...han 1 61 Your OC gas list is likely very different from your diluent gas list but you set it up before the dive so it is immediately available in the case of a bail out Now switch back to closed circu...

Страница 27: ...t condition The system has switched the gas set from the closed circuit gas set to the open circuit gas set picked the gas with the highest PPO2 less than 1 6 and recalculated the decompression based...

Страница 28: ...the top row Stopwatch The Stopwatch is only available in Gauge Mode When diving starting or stopping the Stopwatch is the first menu option When stopped the word Stopwatch displays in red When non ze...

Страница 29: ...we have written The computer implements Gradient Factors by using levels of conservatism The levels of conservatism are pairs of number like 30 70 For a more detailed explanation of their meaning plea...

Страница 30: ...oding the breathing loop with the calibration gas typically pure oxygen press the SELECT button to perform the calibration Good sensors should be in the range of 35 65 mV at sea level in 100 oxygen so...

Страница 31: ...performing a successful calibration PPO2 does not show 0 98 after calibration If you use a calibration FO2 setting of 0 98 and are at sea level you probably expect the calibrated PPO2 to show 0 98 So...

Страница 32: ...n Off and Calibrate displays are disabled when diving Pressing SELECT when this menu is displayed changes the PPO2 setpoint from the low setpoint to the high setpoint or vice versa To redefine the PPO...

Страница 33: ...port open circuit and closed circuit operation the system maintains two sets of gases one for open circuit and one for closed circuit The way they operate is very similar to the way car radios work wi...

Страница 34: ...le Select Gas The new style makes visualizing the gas list easier It also reduces button presses for deco gas switches Shows all gases on the screen at once Press MENU to step through gases and SELECT...

Страница 35: ...In that case the computer will use the user entered high and low setpoints Dive Setup The Dive Setup menus are available both on the surface and when diving The values in Dive Setup can also be access...

Страница 36: ...eturn to the Edit Low SP menu item If the highest allowable value 1 5 has been passed the value will return to 0 4 High Setpoint The high setpoint function works exactly like the low setpoint function...

Страница 37: ...will show you the digit being edited Each push of the MENU button will increment the digit being edited When the digit reaches 9 it will roll over to 0 Pushing SELECT will lock in the current digit a...

Страница 38: ...e HE Edit Edit Save O O O A3 OC On 14 55 5 OC On OO OO 2 OC On 5O OO 85 86 84 85 86 84 85 86 84 Only turn on gases you are carrying Only turn on the gases you are actually carrying on the dive With ra...

Страница 39: ...he profile DURING A DIVE Computes the decompression profile assuming the ascent Dive Plan Setup will begin immediately There are no settings to enter RMV is last used value LIMITATIONS The Petrel Dive...

Страница 40: ...ults are given in tables showing Stp Stop Depth In feet or meters Tme Stop Time In minutes Run Run Time In minutes Qty Gas Quantity in CuFt or liters OC and BO only The first two rows are special the...

Страница 41: ...e reported Also the gas quantity required to surface bailout in CC will be reported No Decompression Results Screen Conservatism The conservatism settings GF High and GF Low can be edited in the Dive...

Страница 42: ...ntinuously reduced which prevents bubbles from shrinking Because of this belief the computer will give one MISSED DECO STOP message during the dive and one after the dive and will flash the stop depth...

Страница 43: ...red experimental but the concepts may be useful to the advanced diver The last selection is 5 This feature was inspired by Dan Wible s CCR2000 computer Thanks Dan It is the time to surface TTS if you...

Страница 44: ...PPO2 is the average PPO2 of sensor 1 and 2 If all sensors fail voting then the display will alternate VOTING FAILED with the PPO2 measurements which will all be yellow to indicate that voting has fai...

Страница 45: ...s is the PPO2 of the single sensor Brightness The display brightness has three fixed brightness settings plus an Auto mode The fixed options are Low Longest battery life Med Best mix of battery life a...

Страница 46: ...f dive in minutes Press MENU to see the next dive or SELECT to quit viewing logs Press Back to see the list of dive logs and next to select the next dive and View Upload Log See Firmware Upload and Di...

Страница 47: ...ble in Dive Setup are available in System Setup not all settings in System Setup can be edited in Dive Setup The MENU and SELECT buttons are context sensitive to each sub menu and individual setting W...

Страница 48: ...er differ by about 3 Salt water being denser will display a shallower depth for the same measured pressure versus the Fresh water setting The EN13319 value is between Fresh and Salt It is from the Eur...

Страница 49: ...nal measured PPO2 The PPO2 Mode can also be changed even during a dive in the Dive Setup menu When semi closed circuit SC is used the PPO2 mode must be Ext Low and High Setpoints The Low and High PPO2...

Страница 50: ...e choices are 10ft 3m and 20ft 6m Note that this setting does not affect decompression It only makes the TTS prediction more accurate NDL Display These options were previously covered in the Dive Setu...

Страница 51: ...C mode the available settings are Large the PPO2 text is the normal large font Giant the PPO2 text is larger In SC mode the available settings are PPO2 the PPO2 is shown FiO2 the Fraction of inspired...

Страница 52: ...are available Feet Imperial units depth in feet temperature in F Meters Metric units depth in meters temperature in C Brightness Screen brightness can be set to fixed levels or an automatic setting Fi...

Страница 53: ...n the computer assumes the surface pressure is 1013 mBar If at altitude this could result in incorrect decompression calculations Flip Screen This function displays the contents of the screen upside d...

Страница 54: ...Time The next System Setup changeable option is Time which allows the user to set the current time The format can be set to AM PM or 24 hour time Unlock Code The next System Setup changeable option i...

Страница 55: ...brief surface intervals connected together into one dive Some instructors use a longer end dive delay when teaching courses Alternatively a shorter time can be used to exit dive mode more quickly upo...

Страница 56: ...O2 that is less than or equal to this value Also the suggested gas switches when the current gas is displayed in yellow are determined by this value If you change this value please understand its effe...

Страница 57: ...go back to the Shearwater Desktop Click start from the open Update Firmware Box or Download Log The PC will then connect to the Petrel and send the new firmware The Petrel screen will give percentile...

Страница 58: ...battery positive contact first A small diagram on the bottom of the Petrel shows the proper orientation Accepted battery types The Shearwater Petrel can accept a wide variety of AA sized batteries The...

Страница 59: ...ry cold water Recommended 1 2V NiMH Common rechargeable batteries used in digital cameras and photo flashes Can have high self discharge Provide about 30 hours of operation per charge Can die quickly...

Страница 60: ...idea User Request You can clear the tissues manually in the System Setup System Setup menu Use the Reset To Defaults option This will then prompt if you want to reset the settings only the tissues onl...

Страница 61: ...sors that have confirming values There is no way to know the actual PPO2 and the average PPO2 will be calculated as 0 11 the lowest value is the most conservative for decompression calculations This m...

Страница 62: ...its tasks in the time allotted It can happen occasionally from a transient problem like a battery bounce after an impact It can also be the result of a hardware problem This reset shows up after a so...

Страница 63: ...ensor Store the Petrel dive computer out of direct sunlight in a cool dry and dust free environment Avoid exposure to direct ultra violet radiation and radiant heat Servicing There are no user service...

Страница 64: ...Range 500 mBar to 1080 mBar Depth of dive start 1 6 m of sea water Depth of dive end 0 9 m of sea water Operating Temperature Range 4 C to 32 C Short Term hours Temperature Range 10 C to 50 C Long Ter...

Страница 65: ...for help Any changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment Caution Exposure to Radio Frequency Radiat...

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