We've fitted a leak sentinel to our FS700 Amphibico Genesis housing. On the whole it's worked flawlessly, however on a couple of occasions, moving from cold top side to heated pool and then filming 2k raw HFR for extended periods the red alarm light has started to flash... The heat of the air inside the housing has obviously raised enough to increase internal pressure above the trigger point.
I therefore view the leak sentinel as a valuable tool to check the integrity of the housing before a dive. If it holds negative pressure for a reasonable period before the dive then a leak during the dive would have to be caused by a physical failure.
So with that in mind, I wouldn't suggest anyone changes their predive camera set up routine to avoid a false reading during the dive. Kitting up in a dry air (e.g air con) room helps avoid condensation issues, being in a quiet room generally helps you focus on what you're doing and keeps you away from the elements and sea air.
Just accept the foibles, understand what the monitor is doing, if the false positives give you the heebie freebies, turn off the monitor after you've done your check.
Edited by bottlefish, 21 March 2014 - 04:54 AM.