Shearwater DiveCAN Petrel 1, Руководство по эксплуатации, Страница: 14 / 70

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Shearwater DiveCAN
®
Petrel
The Center Row
The center row displays PPO2 as measured from three O2 sensors�
PPO2 units are absolute atmospheres (1ata = 1013mbar)�
PPO2 Flashes Red when less than 0�40 or greater than 1�6�
These limits can be adjusted in the Adv. Config 2 menu.
When a sensor is voted out, it displays in Yellow � Voting is performed
to determine which sensors are most likely to be correct if the readings
disagree� A sensor that is within 20% of either of the other sensors
passes the voting and is included in the system average PPO2 (used
to control O2 injection and calculate decompression)�
When the O2 sensors require calibration, the PPO2 value will display
as FAIL� Instructions can be found in the Calibration section�
Voting Failed
If no consensus can be found between the three O2 sensors, then voting has failed�
This displays as PPO2 values alternating with "VOTING FAILED"�
When voting fails, the solenoid will not inject O2 to maintain the PPO2 setpoint�
If this occurs, follow the training guidelines from your rebreather manufacturer or train-
ing agency�
When voting fails the decompression calculations use the PPO2 from the lowest sensor
(most conservative value), down to a minimum PPO2 of 0�16�
Alternates
PPO2 unsafe
Sensor 3 voted out
Requires calibration