Hi Brian,
I
was away for a few days. Yes I believe that it is. I used an
air cylinder open on one end to the chamber and the other end to the atmosphere
and positioned the piston in the middle and filled with silicon. The
cylinder then transmitted the pressure to the chamber.
Some compontent are allergic to higher
pressures.
Generalizing there are a group of electronic
compnents that withstand pressure to about 60 psi and then then another
group are resistant to somewhat over 2000 psi before becoming flakey.
I had used Dow Corning 200 Fluid. It
is availible in a wide range of viscosities.
It is availible in electrical and electronic
grades though I just used the standard without any problems.
The expansion Coefficient is about 0.00105
cc/cc/°C
I don't have the spec sheet as a pdf
but it can probably be found online. If you can't I can scan it and
get it to you.
Thanks,
James.
"Brian Cox" <ojaivalleybeefarm@dslextreme.com> Sent by: owner-personal_submersibles@psubs.org
2007-12-31 05:30 PM
Please respond to
personal_submersibles@psubs.org
To
<personal_submersibles@psubs.org>
cc
Subject
RE: [PSUBS-MAILIST] silicone dielectric
fluid
James,
Is the expansion more that water?
Brian
-----Original Message-----
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org]On
Behalf Of James Barlow
Sent: Monday, December 31, 2007 11:50 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] silicone dielectric fluid
I used Silicon to pressure balance electronic circuit boards to about 2000
psi. It would work well, but it has a fairly large temperature expansion
coefficient. You will have to account for volume change with temperature
change. This can be very simple but must be thought of.
I can get you the spec sheet for the one we used if you would like.
Thanks,
James Barlow RET
Sr. Mechanical Designer
New Product Development
BJ Pipeline Inspection
www.bjservices.com/inspection
Hi,
Has anybody ever used silcone based dielectric fluid
for a battery
pod? Where the battery pod is outside the sub and exposed to the
amient
pressure. I just came across this fluid and didn't realize it was
used in
that application. It seems like it might be better in that it would
not
break down or soften plastic components, also maybe it would work in as
a
medium for computer components and relays which are exposed to pressure.
Brian Cox
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