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Posted by Christoph Lorenz on September 13,
2000 at 01:47:21:
In Reply to: Dynamic pressure changes... posted by Ludwig on
September 12, 2000 at 13:09:57:
Posted from Host: gateway.aol.de (193.189.244.146)
: Just a quick data point - while swimming with an IWC Deep One, the depth gauge max-depth telltale has never measured more than a 3 meter variation from sea-level from all of my splashing and flailing around. One time I fell off a boat, and it registered 5 meters, but I probably went 2-3 meters underwater when I cratered.
I also once played around with a divers' depth gauge by waveing it
around under water and so increasing the water pressure. But the depth gauge
showed almost zero derivation from the real depth.
I think, splashing (especially, when hitting a wave or the water surface)
doesn't increase the water pressure, but is only a "mechanical" shock, which
might (very carefully said) shift the crown or any insecured piece and therefor
cause a (very potential) leak.
But nevertheless, I'd love to have a worldwide standard for a depth rateing.
A watch, rated w/r to 30meters *must not* leak when swimming. In fact, any
water sports above 30meters must not make the watch leak. Period. A customer,
that buys a 30m w/r watch must be sure, that he can safely swim and surface-dive
with it. Period.
Ciao
Christoph