gallathan

Me and my buddies dive inspirations, and use several makes of suunto D3, mosquito/ vytec / vyper as bottom / depth timers, and the vision, vr3 and hs explorer as primary computers. We also have and do use uwatec bottom timers too. In our experience, up to a metre discrepancy in depth is NORMAL.
If find the Explorer / suuntos track each other rather closely, the uwatec and the VR3 tend to read up to a metre deeper. Just read a post on rebreather world about vr3 vs explorer that shows depth readings on VR3 are perticularily accurate... I do generally find that the readings get closer together when going shallower. I noticed that as I wear them on different arms, that if i hold my arms at different depth I get different readings.. Suspect once the batteries get low / in colder water (which is harde on batteries) then occasionally I see more discrepacy - maybe happended once every 200 dives. I HAVE had a depth sensor fail on boh an explorer and the suunto - in both cases they started reading deeper - a LOT deeper, that caused me a few anxious moments. I have also have several uwatec timers that when surface were still convinced they were at 3 to 6m. All these were symptoms of a flooded / trashed computer SIGH. I'm not saying its the best answer, but our solution is to assume the shallowest depth is correct and stop there. Why? Because we don't want to violate the deo ceiling, so if we hang a little below it and off gas a little slower, its better than exceeding it. Most computers will account for slower off gassing, so we clear ALL the stops on ALL the computers before exiting water. Hope this helps