Diver one of sixteen to die using high-tech gear

[jasondbaker]

What is a diluent flush?

I assume the 3 O2 sensors are providing triple redundancy. If one of the sensors fails do you abort the dive? How do you know if the O2 sensor has failed? I'm wondering if the sensor will fail to provide data or if the sensor's data will differ dramatically from the other sensors.

When the O2 sensor(s) fail and the unit starts mixing the wrong gases, won't the computer readout tell the diver what ppO2 is being mixed? Even if it gives the wrong number shouldn't the diver know if the number is correct or not? I have to believe that the CCR diver isn't on autopilot. He should know these numbers at each given depth.

Is there a case where the correct pp02 number is on the computer display but the unit is incorrectly mixing the gas?