RE: [PSUBS-MAILIST] pressure compensation

["Graham K" <cryogenicz@dsl-only.net>]

Very good Skywalker

-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org]On Behalf Of Sean T.
Stevenson
Sent: Thursday, June 20, 2002 4:25 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] pressure compensation


>>I am pressure compensating at ambient..
>
>dale.

Would it not make sense to compensate these spaces at higher than ambient
pressure?
 I can see this having a couple of advantages:

1)  This prevents water (bad) or sea water (very bad) from entering whatever
it is you're trying to protect.  If you compensate just to ambient, water
can
pass freely through a leak in the system.

2)  By compensating to higher than ambient, you are alerted to the presence
of any leaks in the system because the compensating oil volume will
decrease,
giving you time to surface before the pressure reaches ambient and water can
enter.

-Sean
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