Shearwater Petrel EXT with external PPO2 monitoring

Shearwater Petrel 2 EXT

The Petrel 2 is a dive computer for technical divers of all levels. Works with air, nitrox, and trimix gasses. The Petrel 2 can be used for open-circuit and closed-circuit diving, as well as gauge mode if desired right out of the box.

The key enhancements for the Petrel 2 include a next generation three-axis tilt-compensated digital compass and bluetooth upgrade to Bluetooth Smart™, for communication with iOS devices such as the iPad and iPhone. In addition to current Shearwater and third party support for Mac and PC desktop applications, users will now be able to download dives using their iOS devices in conjunction with third party applications.

External PO2 Monitoring

The Petrel EXT has a Fischer connector for monitoring of 1 or 3 external oxygen sensors on any rebreather equipped with a 7-PIN Fischer Cable. (The Petrel will not support 2 sensor configurations.) Closed-circuit divers using a Petrel EXT can choose between using the external oxygen cells, or a user-defined set-point for decompression calculation. 


Shearwater dive computers use B_hlmann ZHL-16C with Gradient Factors as the decompression algorithm. User adjustable conservatism can be done by manipulating the gradient factors. An optional VPM-B algorithm may be purchased if desired. 

For more information, see the video from Shearwater here

The 2.4" Color LCD display is easy to read, with high contrast, and automatic screen brightness. The display may be customized with user-defined font colors, and may be inverted for those who wish to wear the Petrel on their opposite arm. 


The Petrel features a single battery compartment, which will support the use of any AA-sized battery. The Petrel will operate about 35 hours on a quality alkaline battery. Saft LS14500 batteries used by the Shearwater Predator can also be used, and offer the longest life - about 90 hours on the medium brightness setting. Li-Ion, NiMH, Photo Lithium 1.5 and Zinc-Carbon 1.5 batteries can also be used. 


Open-Circuit Features

  • Air/Nitrox/Trimix capable
  • 5 open-circuit gas switch presets
  • Bühlmann ZHL-16C with Gradient Factors
  • Optional Varying Permeability Model (VPM-B)
  • %CNS oxygen exposure tracking
  • Ascent rate monitor
  • Date, time and temp display
  • Easy to read large full color screen
  • Easy to use adaptive menus
  • Water activated and programmable
  • Logbook of last 1000 hours of diving
  • Depth sensor rated to { 450 ft | 137 m }
  • Battery voltage and warning
  • Metric and Imperial
  • Right or left wrist mountable
  • Battery life (Saft 3.6V LS14500) up to 90 hours of diving
  • Battery life (1.5V Alkaline) up to 36 hours of diving

Closed-Circuit Features

  • Constant PPO2 Set Point
  • Automatic Set Point Switching
  • 5 additional CCR Diluent gas presets
  • 2 button push OC bailout
  • EXT model supports External PO2 monitoring
  • Also Supports Semi-Closed
  • Three-axis tilt-compensated digital compass
  • Bluetooth Smart wireless upload/download
  • User upgradable firmware
  • User changeable battery
  • Dive Log Software
  • Two Year Limited Warranty



Shearwater Petrel 2 EXT
SW_PeterlExt
0.80
Price: $1,189.00

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