Re: [PSUBS-MAILIST] water proof switches

["Brian Cox" <ojaivalleybeefarm@dslextreme.com>]

Ray,
          What about those air switches that they have on hot tubs (to isolate the electrical) maybe you could subsitute oil in the air lines.

Brian
----- Original Message ----- 
From: "Cliff McDonald" <cmcdonald@applikonusa.com>
To: <personal_submersibles@psubs.org>
Sent: Thursday, June 09, 2005 10:29 AM
Subject: RE: [PSUBS-MAILIST] water proof switches


> Ray,
> I don't have any experience with waterproofing switches yet, but I was
> thinking along the lines of a sealed box just large enough to cover the back
> sides and filled with non-conductive oil, I would have a sealable "lid" on
> the box that could be opened to access the front of the switches during
> operation.  I plan to have a sealable compartment for my lap-top also.  I'm
> considering it for emergency purposes only in case I have to temporarily
> "ditch" my sub and hopefully protect the electronics until it could be
> retrieved.  I was really intending to help with your question about
> "gas-proof" switches.  I assume they are actually explosion-proof which in
> my experience could mean one of two things:  They are intrinsically safe and
> are probably potted and might work to some unknown depth, or they are built
> to not allow a flame path for a spark to "escape" into the surrounding
> atmosphere as you noted.  There is a sort of gray area difference between
> the two because I've seen the X-proof cert. on both designs.  Neither are
> designed for pressurized environments.
> Hope that helps.
> Best Regards,
> Cliff
> 
> -----Original Message-----
> From: owner-personal_submersibles@psubs.org
> [mailto:owner-personal_submersibles@psubs.org]On Behalf Of Ray Keefer
> Sent: Thursday, June 09, 2005 12:06 PM
> To: personal_submersibles@psubs.org
> Subject: [PSUBS-MAILIST] water proof switches
> 
> Ok,
> 
> Another basic parts question. I am designing a
> semi-dry ambient. How do I keep electrical switches
> dry? For that matter how do I keep the electrics dry?
> 
> I can envision running the electrics into sealed
> compensated boxes to keep salt water away from bus
> bars, barrier strips and fuses.
> 
> How about switches? I can mount them on the front
> sides of the sealed boxes to keep the terminals away
> from water. How do I keep water from invading through
> the front of switches? Can I use gas proof switches?
> Are they sealed? Or just designed not to spark?
> 
> So far the only real thought I had was to mount push
> button switches on a plate then cover with a rubber
> membrane. To active a push button, press on the
> membrane over the switch and press it through the
> rubber.
> 
> Displays are easy. I can mount them inside sealed
> boxes behind plexiglass.
> 
> Regards,
> Ray
> 
> 
> 
> __________________________________
> Yahoo! Mail
> Stay connected, organized, and protected. Take the tour:
> http://tour.mail.yahoo.com/mailtour.html
> 
> 
> 
> 
> ************************************************************************
> ************************************************************************
> ************************************************************************
> 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 311
> 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 311
> 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 311
Weare, NH  03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************