Shearwater Petrel EXT, Operation Manual, Page: 18 / 65

Shearwater Research Inc. Revision 1.1.0 18
Shearwater Petrel
3O/85
GF
SURF
1O13
NOW
1O11
28-Jun-12 16:31
42.O 46.O 43.O
1234ABCD 2OOOO37
73
°
F
3.99 V
PRESSURE mBar
DATE TIME
MilliVolts
SERIAL NO VERSION
TEMP
BATTERY
Gradient Factor:
The deco conservatism value when the deco model is
set to GF� The low and high gradient factors control the
conservatism of the Bühlmann GF algorithm� See “Clearing
up the Confusion About Deep Stops” by Erik Baker�
VPM-B (and VPM-BG):
The deco conservatism value when the deco model is set to
VPM-B�
If the deco model is VPM-B/GFS, also displays the gradient
factor for surfacing�
Pressure:
The pressure in millibars� Two values are shown, the surface
(surf) pressure and the current (now) pressure�
The current pressure 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 current temperature in degrees Fahrenheit (when depth
in feet) or degrees Celsius (when depth in meters)�
Battery:
The Petrel’s internal battery voltage� Displays in Yellow
when the battery is low and needs replacement� Displays in
Flashing Red when the battery is critically low and must be
replaced as soon as possible�
Millivolts:
The raw millivolt readings from the PPO2 sensors� Only
available when external PPO2 monitoring is used�
Date and Time:
In the format dd-mon-yy
12 or 24 hour clock time�
Serial Number & Version:
Each Petrel has a unique serial number�
The version number indicates the available features� The last
two numbers are the firmware version (V37 in this image).
28-Jun-12 4:31
pm
DATE TIME
3.7V
LiIon
+3
VPM-B
+3/90
VPM-BG