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Regarding the thread on dive computer problems.... > > I ran an 18-person trip to Saba two years ago, and we had five > computer failures during the first day or so. From memory, the list was: > > 1 Aladin Pro > 1 Sherwood Source > 2 Suunto Solutions > 1 Suunto SME-ML > On a recent diving trip from the UK to the west coast of Vancouver Island, we had a potentially serious problem with my buddy's Monitor II computer. The depth reading was 4.5m less than mine, using a similar Monitor II. His was an earlier model, before the introduction of a luminous background for the text display. I suspected we had a 'disagreement' when he was happily going down below 45m, and my computer was giving out '2 mins to no-stop'. We had agreed beforehand that this was to be a warm-up, no-deco dive. When we compared depths on the bottom, we were suprised at the difference. On the way up, I was following the 'no-stop curve' and at 16m still had 2mins to no-stop displayed. My buddy's Monitor II was now displaying 45 mins to no-stop. Hmmm... At 3.5m depth, my buddy's computer cleared and went into 'surface mode'. This convinced us it was his Monitor II not mine which was faulty. We routinely do 3 mins extra safety stops at 3 or 5m for ALL dives in addition to any indicated stops on the computer. As we don't know when the Monitor II went wrong, a review of previous dive profiles with 3.5-4.5m added to all depths made for interesting reading. Some of the 'safety stops' were in fact necessary stops. Some were not long enough. Hmmm... As I am a recent subscriber to Techdiver, is this a well known problem that has been discussed "ad nausium" before ? Have other Monitor II users experienced similar problems ? Needless to say, the computer has been returned for attention. This particular fault is probably one of the worst modes of failure (short of a total switch-off during decompression) as it is not obviously going wrong. Maybe you all wear a back-up depth guage and watch ..or 2 or 3 computers each (?) Any comments ?? Regards, Steve M. ******************************************************************************** ********** * * * * Dr. S. G. Millard * E-Mail : ec96@li*.ac*.uk* * * * * * Department of Civil Engineering, * Tel : 051 794 5224 (UK) * * University of Liverpool, * 44 51 794 5224 (International) * * PO Box 147, * * * Liverpool L69 3BX, * Fax : 051 794 5218 (UK) * * UK. * 44 51 795 5218 (International) * * * * ******************************************************************************** **********
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