RE: [PSUBS-MAILIST] pressure compensation

[Ron <ronleonard@shaw.ca>]

Yes, slight positive pressure would be preferred. You want air to leak
out, not water in, if there is a leak.
Ron


-----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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