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Re: [IP] waterproofness
> > Can someone explain what the waterproof definitions mean for the
> > different pumps. If one is waterproof for 1/2 hour up to 8 feet,
> > what happens after 1/2 hour? Can they leak or malfunction? Does
> > 1/2 hour mean 1/2 hour at a time or per site change? If anyone
> > can clarify this, I'd appreciate it.
> Basically, it's the warranty or guarantee time based on the amount
> of time the pump was tested by the company.
A little bit more clarification, if I may. A company will not just
pick a testing standard, test it once, and claim success. Normally
they test at a given specification a number of times to confirm
with some success rate they will withstand that degree of hardship.
If the pump is rated to withstand 8 feet of water for 1/2 hour
(IPX-7), they probably tested it to slightly harder standards (deeper
or longer exposure) to ensure a very high success rate at the standard.
Now, the companies also jockey for the highest rating they feel
comfortable guaranteeing. They test the IPX-7 protocol, then they test
the IPX-8 protocol. IPX-7 is a test of water immersion - 30 minutes
at a depth of 1 meter (which is only 3.3 feet). IPX-8 is a test of
water submersion - suitable for continuous submersion in water under
conditions specified by the manufactorer. MiniMed could probably
claim to meet this standard, since they are specifying deeper limits
than the IPX-7 specification. Animas is claiming IPX-8 under 12 hour,
12 feet limits. If you exceed either limit, you'd be out of the
I've seen products meeting IPX-8 specifying 30 minutes, 33 feet (10
meters) as well as 30 minutes, 131 feet (40 meters). I'm not planning
on being in the water for 12 hours, so I'm wishing someone would test
around 4 hours, 40 feet.
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