DocRevB
54
Shearwater DiveCAN
®
Petrel
O2 Setup
This menu allows changing settings related to the O2 Sensor
calibration and display�
Cal. FO2
This setting allows you to set the fraction of oxygen (FO2) of the
calibration gas�
The calibration gas FO2 can be set from 0�70 to 1�00� The default
value of 0�98 is for pure oxygen, but assumes about 2% water
vapor due to the diver’s breathing on the loop during the flushing
process�
NOTE:
This setting value is the fraction of oxygen, not the partial
pressure of oxygen� When the calibration is performed, the Petrel
measures the ambient barometric pressure to determine the
PPO2� If you are at sea-level, and do not want small variations in
barometric pressure changing the calibrated PPO2 result, there is
an option to set the Altitude to a SeaLvl�
Sensor Disp
Sets the sensor display mode on the center row of the main screen�
The available settings are:
• Large: the PPO2 text is the normal large font�
• Giant: the PPO2 text is larger�
Auto SP (Setpoint) Switch
Auto Setpoint Switch configuration sets up the setpoint switching. It
can be set up to auto switch up only, down only, both, or neither�
First, you set the whether the “Up” switch occurs automatically
or manually� If “Up” is set to “Auto”, then you can set the depth at
which the auto switch occurs�
The menu options are the same for the down setpoint switch�
‣
O2 Setup
Cal. FO2
Sensor Disp
Next
Edit
O.98
Giant
‣
Auto SP Switch
Up: O.7>1.3
Up Depth
Down: 1.3>O.7
Down Depth
Next
Edit
Auto
O7Oft
Auto
O4Oft
O2 Setup
Cal. FO2
‣
Sensor Disp
Change
Save
O.98
Giant