Shearwater Research Petrel 3 OC/CC - Fischer

The Shearwater Research Petrel 3 Fischer OC/CC EXT dive computer has all the modes and features of the Petrel 3, plus incorporates a Fischer 103 I/O connector for integration into rebreathers for primary or redundant PPO2 monitoring with full decompression.

Shearwater Petrel 3 Fischer — All the Diving Information you Need at a Glance

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The Petrel 3 Fischer includes a Fischer 103 I/O port used for external PO2 monitoring of up to three oxygen sensors in a rebreather loop. Once the Petrel 3 Fischer is plugged into the sensor cable via the Fischer 103A connector and calibrated it uses the PPO2 input from the sensors to determine the system average PPO2 used for decompression calculations and CNS tracking. A voting algorithm is used to decide which of the three sensors are likely to be correct. If a sensor matches either of the other two sensors within ±20%, it passes voting. The system average PPO2 is the average of all sensors that have passed voting.

The Shearwater Research Petrel 3 Fischer is a full decompression dive computer incorporating the Bühlmann ZHL-16C algorithm, with user-configurable Gradient Factors (GF). Gradient Factors allow the diver unique and individual control of their dive computer decompression calculations. An optional PIN upgrade to the Varying Permeability Model (VPM-B and VPM-B/GFS) decompression algorithm is also available.

The Petrel 3 Fischer includes a richly featured 'gauge mode' configuration, along with a three-axis tilt-compensated digital compass. The included CCR mode for rebreathers provides the ability to perform constant PO2 set point calculations for deco. During a decompression dive, the Petrel 3 Fischer provides complete information displays of all required stop times. The Petrel 3 Fischer can provide time-to-surface based on "look ahead" at planned gas switches. Multiple gas definition presets are supported with any combination of oxygen, nitrogen and helium.

The Petrel 3 Fischer will NOT "lockout" after a missed stop or ascent rate violation. Out of the box, all models include open-circuit and closed-circuit Air, Nitrox and Trimix mixed gas functionality.

The Petrel 3 Fischer offers a screen display utilising a low-power consumption, high-resolution QVGA, full-colour LCD display. The display will automatically adjust intensity based on available light to make the display easily readable whether on the surface in sunlight, in open water or in a cave.

The Shearwater Petrel 3 Fischer has been designed to accept any type of AA size battery including alkaline, lithium and rechargeable.

In the Box

Included with every Shearwater Petrel 3 Fischer are two elastic straps with buckles, screen protector (already installed), gold contact battery holder and battery already installed (ready to dive out of the box!), USB Bluetooth adaptor, mini-CD with Petrel Manual (PDF) and printed Quick Start Guide with instructions for downloading software from the Shearwater Research website, the Fischer 103 connector, cap, and small bottle of mineral oil. The Petrel 3 Fischer also includes a screen protector already installed to help prevent scratches of the display face. The software includes a complete dive log manager, compatible with both MS Windows and MAC OS X. The dive log manager supports log downloads and firmware updates via the Bluetooth wireless interface of the Petrel 3 Fischer.

Shearwater Petrel 3 Fischer Modes

• OC Rec - Three gas nitrox computer recreational computer.
• OC Tec - Multi gas, trimix decompression computer.
• CC INT - Closed circuit fixed PPO2.
• CC EXT - Closed circuit real time monitoring of 1 or 3 O2 sensors.
• SCR EXT - Semi-closed monitoring of PPO2 for 1-3 O2 sensors.
• Gauge - Bottom timer with stop watch and dive logging.
• Two year warranty against manufacturing defects

Shearwater Petrel 3 Fischer OC/CC EXT Features

• External PO2 monitoring and semi-closed
• Air, Nitrox, Trimix capable
• Quick OC bailout from CC
• Decompression
• Digital Compass: 3 axis, tilt compensated
• Dive Planning
• Buhlmann GF algorithm
• Optional VPM-B algorithm
• Dive Logging
• Upgradeable Firmware
• Smart Ready Bluetooth Interface
• User Replaceable AA Battery

Shearwater Petrel 3 Fischer Specifications

• Screen Resolution: 320x240 QVGA
• Display Type: Full colour LED LCD
• Display Size: 2.2"
• Battery Type: Single AA (any type)
• Battery Life:
  AA Alkaline: 35 Hours
  SAFT LS14500: 100 Hours
• Number of Gases: 5 OC / 5 CC
• Dive Log: 1,000 Hours
• Depth Rating: 260m (850ft)

Shearwater Petrel Manuals

Shearwater Petrel Operations Manual Petrel 1 / Petrel 2 (PDF)
(This manual covers the Standalone and EXT Models)
Shearwater Petrel 2 Nitrox Recreational Model User Manual (PDF)
(This manual covers operating instructions for all other features of the Perdix AI)
Shearwater Petrel Operation Manual Petrel 1 / Petrel 2 (PDF)
(This manual covers the Recreational Nitrox operating mode in the Perdix)

Differences of Shearwater Petrel vs Perdix Dive

The Shearwater Petrel dive computer was introduced in September 2012 and received a minor update as the Petrel2 in October 2014 to add the electronic compass. The Shearwater Perdix, introduced in January 2016, while retaining identical software functionality represents a re-engineering of the case and electronics. The Shearwater Perdix-AI, introduced in November 2016, includes support for wireless tank pressure monitoring.

Compared to the Petrel display, the higher contrast Perdix display offers enhanced colour range and saturation (especially reds, greens, and yellows). The power requirements of the Perdix are also significantly improved compared to the Petrel, offering 30% longer battery life (some users of the SAFT lithium battery may see as much as 50% improvement).

The Petrel case is machined polyoxymethylene (aka POM and Delrin), which limits some of the case design options when compared to the moulded fibreglass reinforced nylon Perdix case. The Perdix case is a lower profile with a more contoured shape that is form fitting to the wrist. While face dimensions are similar, the significantly thinner Perdix is 30% less total volume and 30% lighter than the Petrel. The Perdix case also incorporates features to support both elastic straps and bungee wrist mounts. The Petrel LCD display itself is very slightly larger than on the Perdix, but this is evident only when they are held next to each other. The Petrel is depth rated to 300 msw {980 fsw} and the Perdix is depth rated to 260 msw {850 fsw}.

Warranty Information:
This product has a limited warranty of two (2) years.

Note: This item cannot be delivered outside of Australia.