omichalis
Date: Sun Jul 18, 2010 9:34 am ((PDT))
that seems really interesting !!
thx !
@Richard
I have the dolphin ear pros, and want to experiment in various depths
the thing is that having something like 50m cable or more in a hydrophone i=
s not aways handy.. actually it is rarely handy, as I' ll have to carry 50m=
or so of cable (in each hydrophone) anytime I want to record in a a small =
lake or pod..
cutting cables is out of the question,
so I was thinking to have an extension cable and use some kind of substance=
(like the Scotch Fill) to insult the connection on the fly !
let aside extension cables are expensive and having a dedicated set only fo=
r my hydrophones might be a little too much..
thx !
On 18 =CE=99=CE=BF=CF=85=CE=BB 2010, at 6:40 =CE=BC.=CE=BC., Mitch Hill wro=
te:
> At 11:59 AM 7/18/2010 +0300, you wrote:
> >speaking of hydrophones,
> >
> >I want to make extension cables for my hydrophones, so I can dip them
> >further down,
> >
> >the obvious solution would be to completely coat the joints with some
> >waterproof substance, maybe slicon or rubber,
> >
> >but I' m wondering is there is any other way to ensure a waterproof
> >connection while remaining flexible on the same time.. Maybe there is so=
me
> >kind of waterproof XLR plug out there ? or maybe some kind of vaccum cas=
e
> >that could be handy ?
> >
> >anybody tried sth similar ??
>
> When I was working in oceanography, a common method of waterproofing a
> connection as you describe was to wrap it using a 3M product called
> "ScotchFil" and then overwrap it with Scotch 33 electrical tape to protec=
t
> the ScotchFill which is a very soft self vulcanizing rubber type
> material. Scotchfil is actually a putty in tape form, it comes in a 5 foo=
t
> long roll, 1 1/2" wide, about 1/8" thick... It is made and sold as a high=
> voltage insulation material...
>
> The neat thing about Scotchfil, its easy to remove when you want to
> separate the joint again, slit it with a knife and peel it off like
> removing the skin from a banana...
>
> I did high pressure testing in water to determine the reliability of a
> Scotchfil sealed joint at 15,000 lbs/sq in. for a project that required
> going to maximum ocean depth and found the Scotchfil method was 100%
> reliable. For these depths we used Alpha FIT300 heat shrink tube over the=
> joint for mechanical strength...
>
> Its an incredibly simple way to make a foolproof underwater connection...
>
> --
>
> Thanks,
> Mitch & Shadow...
>
> http://www.4shared.com/dir/UTASxktL/wildlife.html
>
> Shadow's area: http://www.4shared.com/dir/ecfWjyZb/Shadow.html
>
>
>
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