Quote: (Originally Posted by
jptaylor9)

I've had a couple of cells that seemed to loose calibration on longer dives, drifted to 0.2 below other cells. O2 flush at 6m & they only made it to 1.4. Once head dried out, they calibrated OK & worked OK for 90mins to 2 hours.
When doing 2 dives, cell caused "must calibration" when unit turned on for 2nd dive rather than the more usual "calibrate?". However, more noticeable on longer 3 hour dives.
One cell replaced by AP, the other is currently in my spares kit.
Replacing cell fixed issue.
Hope this helps
JT
Same problem we have encountered on the Classic. On long dives you get cells which begin to lag but not enough to set off a "cell warning" or maybe just very briefly now and again. No doubt from water droplets on the face of the cells. On a second dive in a day you can get the "must calibrate" if you've noticed cells become laggy. All cells will still reach 1.6 + in the above scenarios.
Had a couple of cells over the last year begin to lag significantly. Wouldn't reach 1.4 on an o2 flush whilst the others did. They were about 8 months old. Turfed them and replaced. No problems. Figured they were current limited.