Citizen Promaster Depth Wrong - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 03-27-2019, 06:25 PM   #1 (permalink)
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Default Citizen Promaster Depth Wrong

Sorry if this has been discussed in another thread, I couldn't find a thread that seems to match the question(s).

I have two B741, both reading accurate at 10 feet (pool), but after diving in Cozumel last week one is spot-on at all depths and the other appears to be off by 10 feet at some point deeper than 10 feet. So, it's "right" at 10 feet, but by the time I started getting to between 30-75 feet, it was off (reading shallow) by about 10 feet. Unfortunately I didn't have the chance to descend very slowly to compare my dive computer to the watch to see if it all happened at once, or just get more progressively wrong. I suspect it was all at once because at 50 feet the watch was reading 40, at 60 feet the watch was reading 50, at 75 feet, that watch was reading ~65 feet. So that's my fault for not going down more slowly (the current doesn't really allow for a distracted decent) but I'm wondering if the depth gauge is adjustable or replacable..

Does anybody have any thoughts or ideas?
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Old 03-27-2019, 09:14 PM   #2 (permalink)
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Aloha
After the Dives did you thoroughly .......
GET THE WATCH SENSOR REALLY DRY .....??????

If the....SENSOR has any MOISTURE IN IT it will register still yet.
You can dry it with a .....Hair Dryer from a distance and try and see
it it goes back to normal readings.

NOTE:
Remember if you were in ......SALT WATER ....SALT LEAVES A RESIDUE
in some of them.
This happens to many of us ......IN HAWAII when we go diving.
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Old 03-28-2019, 08:19 AM   #3 (permalink)
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Originally Posted by LongBike View Post
Aloha
After the Dives did you thoroughly .......
GET THE WATCH SENSOR REALLY DRY .....??????

If the....SENSOR has any MOISTURE IN IT it will register still yet.
You can dry it with a .....Hair Dryer from a distance and try and see
it it goes back to normal readings.

NOTE:
Remember if you were in ......SALT WATER ....SALT LEAVES A RESIDUE
in some of them.
This happens to many of us ......IN HAWAII when we go diving.
No, not specifically. #1 is didn't think about that, and #2 I guess when it left dive mode I would have thought it was dry enough. So perhaps the "in the water" sensor was dry, but not the pressure sensor...

Is the pressure sensor sealed electronics or exposed "spring" mechanical (I can't find anything about how, it works via Google searches)? If it's mechanical perhaps a quick burst of lubricant before my next dive might help?
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