|
Alan,
Still you can take it down to about 30 feet without ever
leaving your shop. If it doesn't leak air at that pressure differential
that's good. If it does leak, you've only got air (or a leak
detector) instead of dirty water or salt water into the
defect.
So this begs two questions:
1. What's the best product and/or procedure
for locating a small leak flowing from the outside of a vessel to the
inside?
2. Would it be better to try to seal the hatch and
pressurize the vessel on the inside to detect air leaking to the outside?
That's putting the higher pressure on the "wrong" side of the
hatch/canopy.
Jim T
In a message dated 1/18/2011 8:20:05 P.M. Central Standard Time,
alanjames@xtra.co.nz writes:
Thanks
everyone for clearing that up,
I was thinking that if you had a pump that
could produce 250 psi & it's sucking
from somewhere, that you could
attach it's intake to a hull & produce a negative
250 psi pressure.
Have done a bit of "Googling" with your direction & have sought
of got
my head round it.
Darn! it seemed a lot easier option than dropping my hull
down a deep lake on a long rope.
Regards Alan
----- Original
Message -----
From: "Jens Laland" <laland@artematrix.org>
To:
<personal_submersibles@psubs.org>
Sent: Wednesday, January 19, 2011
1:19 PM
Subject: Re: [PSUBS-MAILIST] Pressure testing with a vacuum
pump
> This one I find quite useful with regards to measuring
vacuum, ref
>
>
http://traktoria.org/files/instrumentation/vacuum/Pressure_Conversion_Table1.pdf
>
> Best regards,
> Jens Laland
>
>
>
>
>
>
************************************************************************
>
************************************************************************
>
************************************************************************
>
The personal submersibles mailing list complies with the US Federal
>
CAN-SPAM Act of 2003. Your email address appears in our database
>
because either you, or someone you know, requested you receive
messages
> from our organization.
>
> If you want to be
removed from this mailing list simply click on the
> link below or send
a blank email message to:
>
removeme-personal_submersibles@psubs.org
>
> Removal of your
email address from this mailing list occurs by an
> automated process
and should be complete within five minutes of
> our server receiving
your request.
>
> PSUBS.ORG
> PO Box 53
> Weare,
NH 03281
> 603-529-1100
>
************************************************************************
>
************************************************************************
>
************************************************************************
>
************************************************************************
************************************************************************
************************************************************************
The
personal submersibles mailing list complies with the US Federal
CAN-SPAM
Act of 2003. Your email address appears in our database
because
either you, or someone you know, requested you receive messages
from our
organization.
If you want to be removed from this mailing list simply
click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address
from this mailing list occurs by an
automated process and should be
complete within five minutes of
our server receiving your
request.
PSUBS.ORG
PO Box 53
Weare, NH
03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************
|